| Names | |
|---|---|
| Preferred IUPAC name | 4-iodophenoxybenzene |
| Other names | 4-Iodophenyl ether p-Iododiphenyl ether 4-Iodophenoxybenzene |
| Pronunciation | /ˈfɔːr aɪˌoʊdoʊ daɪˈfiːnəl ˈiːθər/ |
| Identifiers | |
| CAS Number | 637-45-0 |
| Beilstein Reference | 2039847 |
| ChEBI | CHEBI:52226 |
| ChEMBL | CHEMBL3407744 |
| ChemSpider | 165864 |
| DrugBank | DB08435 |
| ECHA InfoCard | ECHA InfoCard: 100_010_908 |
| EC Number | 213-273-8 |
| Gmelin Reference | 878012 |
| KEGG | C19315 |
| MeSH | D015733 |
| PubChem CID | 70279 |
| RTECS number | UX9100000 |
| UNII | UW8043608I |
| UN number | UN3077 |
| CompTox Dashboard (EPA) | DTXSID70887304 |
| Properties | |
| Chemical formula | C12H9IO |
| Molar mass | 326.08 g/mol |
| Appearance | white to light yellow crystalline powder |
| Odor | Odorless |
| Density | 1.7 g/cm³ |
| Solubility in water | Insoluble |
| log P | 3.8 |
| Vapor pressure | 1.03E-4 mmHg at 25°C |
| Acidity (pKa) | 18.9 |
| Basicity (pKb) | 8.61 |
| Magnetic susceptibility (χ) | -70.0·10⁻⁶ cm³/mol |
| Refractive index (nD) | 1.673 |
| Viscosity | Viscous liquid |
| Dipole moment | 3.21 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 367.3 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | Std enthalpy of formation (ΔfH⦵298) of 4-Iododiphenyl Ether: 58.6 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | -1581.7 kJ/mol |
| Hazards | |
| Main hazards | Harmful if swallowed, causes skin and eye irritation, may cause respiratory irritation. |
| GHS labelling | GHS02, GHS07 |
| Pictograms | GHS07,GHS09 |
| Signal word | Warning |
| Hazard statements | H302, H315, H319, H335 |
| Precautionary statements | P261, P264, P271, P272, P273, P280, P302+P352, P305+P351+P338, P321, P332+P313, P337+P313, P362+P364, P501 |
| Flash point | Flash point: 113°C |
| Autoignition temperature | 250 °C (482 °F; 523 K) |
| Lethal dose or concentration | Lethal dose or concentration (LD50/LC50) for 4-Iododiphenyl Ether: **"LD50 (oral, rat): > 2000 mg/kg"** |
| LD50 (median dose) | LD50 (median dose): Rat oral 3070 mg/kg |
| NIOSH | VL8575000 |
| PEL (Permissible) | PEL (Permissible Exposure Limit) for 4-Iododiphenyl Ether: Not established |
| REL (Recommended) | 1 mg/m³ |
| IDLH (Immediate danger) | Not established |
| Related compounds | |
| Related compounds | 4-Bromodiphenyl Ether 4-Chlorodiphenyl Ether 4-Fluorodiphenyl Ether Diphenyl Ether |
| Field | Description |
|---|---|
| Product Name | 4-Iododiphenyl Ether |
| IUPAC Name | 1-iodo-4-phenoxybenzene |
| Chemical Formula | C12H9IO |
| Synonyms & Trade Names | 4-Iodophenyl phenyl ether; 4-Iododiphenyl ether |
| CAS Number | 637-89-8 |
| HS Code & Customs Classification | HS Code assignments depend on the country and the level of product refinement; for aromatic ethers in this class, codes typically reference aromatic ethers or halogenated aromatic compounds. Final allocation for export or import relies on full product definition and any relevant downstream application or regulation. |
Production of 4-Iododiphenyl Ether starts with deliberate raw material sourcing, centering on high-purity monoiodoaniline and phenol derivatives. Each batch's consistency hinges on the grade of starting iodine reagent, as residual halides and isomers directly influence both color and performance in end-use formulations.
Process routes depend on available infrastructure and energy input considerations. Direct iodination routes offer cost balance but require strict control of exothermicity and secondary byproduct formation. Side-products such as polyiodinated species or positional isomers must be contained using controlled addition rates and in-process sample monitoring. Final purity can be highly grade-dependent, with electronic or pharmaceutical intermediates demanding additional purification—typically through fractional crystallization or multi-stage distillation—versus technical or polymer intermediate grades.
Storage stability for this compound primarily relates to ambient temperature and protection from light and humidity. At scale, we have seen oxidative degradation or color body formation, especially with transportation delays or suboptimal drum sealing. Choice of packaging for bulk shipment (fiber drums vs. HDPE containers) reflects anticipated transit time, climate risk, and customer receiving criteria.
For downstream users blending in resins, surfactants, or custom catalysts, batch-to-batch uniformity directly impacts reaction conversion and color profile in final product applications. Technical documentation supports the customer by detailing impurity profile consistency, with internal release standards defined per customer quality agreement rather than one universal threshold.
HS code assignment flows from both chemical structure and intended industrial use; aromatic ethers with halogen substitution do not always receive a singular global code, and product grade or purity may alter the customs requirements. This underscores the need for ongoing dialogue between production, sales, and regulatory departments, especially as regulatory frameworks evolve and downstream innovation pressures require quick adaptation in product declarations for compliance.
In routine production, 4-iododiphenyl ether is isolated as a solid. Color is typically off-white to pale yellow, with minor lot-to-lot variation influenced by trace iodine content, grade, and purification stage. Odor is negligible under standard handling. Melting and boiling points are strongly grade-dependent and shift with residual impurities, especially unreacted starting materials or mono-iodinated byproducts. Experienced operators watch for changes in melting behavior as early clues to off-specification lots. Density falls within the range expected for halogenated aromatic ethers but is validated for each production batch. Pouring and grinding characteristics matter for downstream blending and storage flowability.
Stability remains reliable during bulk storage when standard temperature, dry conditions, and oxygen exclusion are upheld. Degradation accelerates with exposure to strong UV or oxidizing reagents, prompting caution during transport and long-term warehousing. No unexplained reactivity under neutral storage, but alkaline or nucleophilic conditions may attack the ether bridge or promote iodine displacement, so material selection for process equipment and packaging lines targets inert surfaces.
Solubility follows typical patterns of non-polar halogenated aromatics: sparing in water, enhanced in chlorinated solvents, esters, and aromatic hydrocarbons. Preparation of stock solutions is tailored for intended industrial use. Users in pharmaceutical intermediates opt for anhydrous solvents to avoid hydrolysis. For electronic-grade product, strict filtration before solution prep addresses particle and ionic contamination.
Exact specifications align with client or application sector: higher-purity for pharmaceutical and electronic sectors, general purpose for agrochemical or dye intermediates. Content of 4-iododiphenyl ether is established by GC or HPLC; moisture determined via Karl Fischer titration for highly sensitive applications. Precise values, acceptance thresholds, and allowed side products shift with contractual quality requirements.
Known impurities in standard production encompass mono- and diiodinated analogs, diphenyl ether, residual starting halides, and inorganic iodine salts. For sensitive applications, specific attention goes to orthoposition isomers and part-per-million halogenated side products. Detailed impurity limits are finalized per client, batch process, and end-use.
Assay by GC/FID, confirmed by HPLC-UV when reference standards permit. Isomer ratio and trace impurity quantitation apply validated internal methods or harmonized monographs where legislated. Analytical instrumentation selection respects customer sector demands and anticipated impurity spectrum of the chosen synthesis route.
Selection focuses on high-purity diphenyl ether and iodine sources. Key concerns include halide content, moisture, and organic input trace metals. Secure supply chain relationships preserve batch-to-batch reproducibility and minimize introduction of exogenous impurities in downstream refinement.
Standard industrial synthesis leverages electrophilic aromatic substitution, commonly through the action of iodine or iodine donors in the presence of suitable Lewis acids or oxidants. Catalyst choice and solvent system strongly affect regioselectivity. Process development evaluates byproduct suppression, waste minimization, and energy use for commercial-scale operation.
Major process controls include temperature profile, mixing vigor, reagent addition rate, and strict exclusion of excess moisture or oxygen. Following the main iodination step, work-up may involve recrystallization, filtration, and solvent exchange. For electronic-grade lots, multi-step purification (including chromatographic or distillation polish) narrows impurity banding and meets stringent customer checks.
Every lot passes through common checkpoints: composition, melting point, impurity scan, visual appearance, and solution clarity. The final release standard is subject to internal quality control criteria and customer requirements. Certificates of analysis reflect both routine controls and any additional client-desired properties.
4-iododiphenyl ether undergoes a variety of coupling and substitution reactions. Typical applications harness the aryl-iodide for Suzuki, Sonogashira, or Ullmann-type cross-couplings, enabling extension to polyaryl or heteroaryl systems.
Catalyst and temperature conditions depend on the downstream transformation target. Many cross-coupling applications use palladium or copper catalysts, with base and solvent conditions set to optimize yield and suppress side generation. Solvent selection also impacts waste disposal costs and downstream crystallization.
Common derivatives include biphenyl intermediates, functionalized ethers, and heterocyclic compounds. Product is also a building block in specialty polymers and electronic substrates. Each advancement in synthetic step places increasing demands on feedstock impurity ceiling and trace metal background.
Manufacturing teams prioritize storage in cool, dry, and dark locations using air-tight, inert-compatible containers. High humidity or oxidative atmospheres raise risk of iodine loss and color change. Warehouses avoid proximity to acids, alkalis, and strong oxidants. Seasonal temperature fluctuation plans minimize material breakdown.
Bulk product is filled and shipped in lined steel drums or high-purity plastic bins, with selection driven by end-use sector contamination sensitivity. For electronic or pharma grade, non-leaching polymers or fluoropolymer linings are preferred to sidestep catalytically active trace metals.
Shelf life depends on grade, impurity content, and environmental control. Degradation signs include yellowing, clumping, or liberation of free iodine (detected as a faint iodine odor or violet vapor in extreme cases). Re-inspection before make-or-break applications is industry practice.
Assignment follows supplied and validated toxicological data sets for each lot and regulatory region. Manufacturer labels comply with relevant hazard pictograms, precautionary codes, and transport regulations applicable to halogenated aromatic ethers.
Workers observe measures to minimize dust inhalation, direct contact, and accidental ingestion. Facilities operate with fume extraction and dust control in areas where powder is dispensed or transferred. Manufacturer-specific hazard phrasing and risk codes derive from ongoing review of occupational exposure records and MSDS-specific regional requirements.
Toxicological data reflects product grade, route of exposure, and cumulative experience across user base. Specific acute and chronic endpoints are referenced for regulatory engagement but remain accessible to professional handlers who require direct safety data.
Different user facilities operate under varying exposure policies, often tighter in pharmaceutical and electronics lines than for intermediates. Production relies on mechanical handling, enclosed transfer, and standard PPE. Emergency protocols for iodine compounds are drilled and include immediate containment and clean-up procedure.
In an integrated chemical manufacturing facility, annual output of 4-Iododiphenyl Ether typically scales with both raw material availability and the operational windows of multi-purpose halogenation lines. Preferred feedstock sources include high-purity diphenyl ether and iodine, with production volumes adjusted according to grade—most technical-grade requests see higher throughput than pharma/intermediate grades requiring tighter impurity controls. Supply contracts or tenders from sector customers can block-book entire campaigns, causing fluctuations in available spot market volumes during certain quarters.
Lead time varies by customer requirement and grade. Standard technical grade, if drawn from stock, ships with minimal delay. Custom or high-purity grades requiring extra analytical verification or multistage purification generally prompt 3-5 week lead times, reflecting both synthesis queue and analytical turnaround. Minimum order quantity reflects production campaign size and logistics; small-lot custom batches entail higher per-kg cost due to campaign changeover and cleaning requirements.
Packaging configuration hinges on grade sensitivity, downstream formulation requirements, and regulatory/exposure risk management. Bulk technical grades fill lined fiber drums or HDPE containers. Higher purity grades and regulated end-use intermediates often ship in nitrogen-purged glass or fluoropolymer-lined options, minimizing contamination and degradation risk. UN/DOT/ADR/IMDG compliance influences outer packaging for international transits.
Bulk shipments employ sea or land routes. Smaller, value-dense pharma or specialty grades employ airfreight (subject to documentation). Standard INCO terms include FCA, FOB, or CIF. Payment terms tie to established customer risk assessments and may require advance payment on initial contracts or net 30-90 days for recurring clients. High-value intermediates may see escrow or LC solutions in higher-risk jurisdictions.
The key drivers in 4-Iododiphenyl Ether's cost structure are iodine content, the price volatility of iodine as a feedstock, and the cost/availability of high-purity diphenyl ether. Iodine market pricing impacts cost-of-goods directly; ocean mining disruptions or regulatory quotas in major iodine-producing countries can cause sudden supply-side inflation. Process yield from the halogenation step further affects per-batch conversion costs, especially if byproduct handling or purification cycles increase.
Sudden supply shortages or surges in iodine pricing—driven by mining quota shifts, export regulations (notably in Japan, Chile), or commodity speculation—translate into direct raw material price hikes. Energy cost shifts in regions with significant chemical output (notably China, EU) ripple through reactor operating costs. Regulatory action on environmental emissions or hazardous waste management for halogenated intermediates also influences variable overhead.
Product price diverges significantly by grade and required certification. Technical-grade material bears a lower per-kg cost, reflecting larger-batch runs with basic packaging. Higher-purity, research, or Pharma GMP-intermediate grades require multi-step crystallization or chromatography, final-release testing for trace halogens/organic impurities, and certified packaging. Packaging with traceability, nitrogen blanketing, or specific regulatory paperwork for controlled substances commands further premium.
Demand for 4-Iododiphenyl Ether follows regional patterns in electronics, specialty chemical, and pharmaceutical intermediate markets. North American and Western European customers often specify traceability of raw materials and stricter purity than technical uses in Asia. Major production centers align with established halogenation chemistry clusters, notably in India, China, Japan, and the EU.
United States and European Union buyers trend towards smaller-lot, documentation-driven imports, driven by downstream pharma and electronic materials. Japan holds strategic position for both raw material and finished product (iodine supply constraints, advanced material users). India emerges as both a major producer (high-capacity batch plants) and fast-growing internal consumer. China remains the largest-volume exporter, but regulatory tightening on halogenated waste streams could affect future capacity.
Indicators point to modest price escalation into 2026, attributed to ongoing iodine raw material volatility, environmental restrictions on halogenated byproducts, and the expansion of regulated end-use applications (Agro/Pure API intermediates, OLED precursors). Key data sources include regional customs import/export statistics, industry association bulletins, and regulatory filings. Forecast methodology relies on raw input market linkage, process variable tracking, and grade-indexed pricing analysis.
Tighter iodine export quotas (notably recent restrictions in key Asian suppliers) place periodic stress on spot availability. Some manufacturers shift to hybrid sourcing or hedging contracts to secure consistent feedstock. Capacity expansions—particularly in India and China—offset some of the volatility, but ongoing waste management costs remain a constraint on margins, particularly for high-purity, low-volume custom grades.
European REACH and the US TSCA frameworks tighten reporting, with increased focus on trace-level impurities and end-use disclosure. Local regulations in China and India drive process improvements for effluent controls, adding direct compliance costs for reactors handling halogenated streams.
Manufacturers improve batch traceability, expand in-process controls, and invest in vertical integration to manage lot consistency and downstream impurity risk. Strategic stocking buffers, flexible packaging options, and dual-source raw material pipelines mitigate short-term disruptions. Incremental process redesigns—especially in waste minimization and energy recovery—absorb a portion of rising regulatory pressure.
4-Iododiphenyl Ether serves as a key intermediate in the synthesis of specialty pharmaceuticals, high-performance agrochemicals, and advanced materials. Pharmaceutical process chemists rely on its halogen functionality during the construction of iodine-containing drug scaffolds. Agrochemical synthesis teams use it in regulated pesticide and herbicide discovery projects where molecular iodine insertion is vital. The electronics sector employs it as a building block for certain functionalized aryl ethers in organic semiconductors and dielectric materials, often driven by purity and trace halide control.
| Application Segment | Recommended Grade | Key Differentiators |
|---|---|---|
| Pharmaceutical Synthesis | Pharma/Custom | Low residual solvents; batch traceability; bio-relevant trace impurities control; tailored documentation |
| Agrochemical R&D / Formulation | Technical/Agro | Focus on organic purity and target halogen content; compliance with local residue regulations |
| Electronic Materials | High-Purity/Electronic | Low metallic and halide residuals; emphasis on particle control and batch uniformity |
| General Synthesis | Industrial | Balanced impurity level; cost-efficient production; robust supply continuity |
Each segment presents unique requirements. In pharmaceutical manufacturing, organic and inorganic residue profiles weigh heavily, and analytical support (NMR, HPLC, GC, ICP-OES) defines grade acceptability. Agrochemical producers require organic purity and reproducibility but may accept slightly broader impurity bands when documentation or compliance windows allow. For electronic materials, ionic contamination and trace metal levels become strict limits since downstream device fabrication can amplify yield loss from particle or metal contamination. General industrial synthesis may place the economic price per kilo above rigorous analytics and favor robust, reproducible product from validated syntheses.
Direct user input tells the manufacturer whether priority falls on regulatory documentation, purity, technical support, or price. Giving an unambiguous application context narrows the grade choice quickly.
Many global customers operate under EPA, REACH, or ICH guidelines, which shape trace impurity and documentation demands. Industry segment (pharma, agro, electronics) often dictates if documentation or residual testing is mandatory, elective, or subject to variation depending on batch geography.
Purity requirements stem from the risk of impurity carry-over into formulated products. In API or crop chemical routes, tightly specified impurity content protects against regulatory censure and process unpredictability. Every application defines its own cutoff values; batch-to-batch reproducibility closes the loop for ongoing supply.
Expected scale can steer grade selection. R&D projects or pilot batches often tolerate premium custom documentation and batch analytics, while high-volume manufacturing prefers established, cost-optimized grades with robust supply commitments. Economics often defines feasible tradeoffs between technical specification and affordability.
Actual use case testing provides the fastest reality check on grade suitability. The manufacturer can release pre-shipment QC reports with each sample. Customer feedback on downstream reactivity, handling, and analytics closes the quality loop and identifies if the delivered grade meets final processing and performance needs.
Our production, quality control, and batch release of 4-Iododiphenyl Ether operate within an established quality management framework. Manufacturing facilities align process workflows to meet or exceed globally recognized standards, underpinned by documented SOPs for critical steps and regular internal audits. Core process controls address traceability, in-process consistency, and deviation management in accordance with each regulatory or customer-required certification. For new applications or jurisdictions, quality system scope and audit depth can be expanded based on customer qualification expectations and regulatory requirements.
Certification capabilities depend on the product grade and end-use sector. Typical grades for downstream chemical synthesis, electronics, or pharmaceutical intermediates necessitate different purity requirements, elemental impurity assessments, and residual solvent profiles. We support certification to customer-agreed specifications, including batch-specific analysis from accredited laboratories upon request. When required, compliance documentation referencing REACH registration, compliance with relevant substance-specific legislation, or regional certifications can be provided, conditional on product grade and final application sector.
Documentation supplied with each batch reflects the depth of testing performed during batch release. A certificate of analysis accompanies each shipment, tailored to the grade specification agreed with the customer. Additional supporting dossiers—such as detailed quality control protocols, impurity profiles, risk assessment summaries, or regulatory compliance statements—can be included based on project needs and negotiation of deliverables at project initiation. For sensitive downstream sectors, method validation and inter-batch consistency reports can be requested as part of ongoing vendor qualification programs.
Consistent supply of 4-Iododiphenyl Ether draws upon established core synthesis capabilities, anchored by scalable reactor assets and validated purification modules. Production scheduling is aligned to both contract and spot order volumes, with adaptability for urgent supply driven by real-time demand signals from customer partners. Flexibility in the business cooperation model accommodates regular contract volumes, joint development projects for specialty grades, or volume-based tiered pricing for strategic accounts.
Process route selection reflects both raw material availability and impurity burden control. Batch consistency is maintained through real-time in-process monitoring and critical control point management, minimizing variability in final content and byproduct profile. Production lines are designed for multi-grade flexibility, so supply assurance can be maintained through parallel campaigns if customer requirements shift. Mitigation plans for raw material supply shocks are regularly stress-tested in collaboration with supply chain partners.
Sample requests initiate with technical dialogue to identify the intended application sector, grade suitability, and downstream testing requirements. Available inventory is screened against requested specification, and samples are dispatched with accompanying certificates and, where agreed, detailed impurity or stability reports. Feedback from sample evaluation cycles feeds back into continuous improvement of both analytical protocols and final manufacturing controls.
Procurement teams and technical end-users can select from several cooperation modes, including long-term supply with flexible volume off-take, just-in-time batch release, or supply-to-project plans for downstream validation. Custom manufacturing arrangements can be negotiated for application-critical grades, with risk-sharing models on qualification batches or volume ramp-up phases. For dynamic demand profiles, capacity reservation and rapid campaign switching are integrated into the production planning process, reducing lead time for both standard and specialty batches.
Researchers focus on applications in pharmaceuticals, agrochemicals, and functional electronic materials. Across our own process development, reaction selectivity and impurity profile receive continued investigation, particularly given the sensitivity of downstream synthesis steps to halogenated aromatic intermediates. Demand from the API (active pharmaceutical ingredient) sector remains a primary driver, as iodinated diphenyl ethers serve both as building blocks and as intermediates for subsequent substitutions or coupling reactions. Industrial partners show increased scrutiny regarding residual metals and halogen impurities, driving continuous improvements in work-up and purification.
Interest from OLED and advanced polymer research highlights new end-uses outside traditional fine chemicals. Institutes partner with manufacturers willing to support scaled syntheses for functional material prototyping. Battery and advanced dielectric research also create requirements for custom high-purity or specially functionalized grades, with specification details tied closely to the final electronic performance. This trend places pressure on adaptability in batch size, custom impurity control, and rigorous QA documentation.
Iodine source selection and control over homocoupling byproducts remain a routine challenge in the manufacturing process. Maintaining color and minimizing side-chain chlorination come up often in pharmaceutical-sector feedback. Technical advances center around improved phase-transfer catalysis, alternate greener solvents, and inline process controls using HPLC or GC for real-time endpoint determination. Purification continues to rely on recrystallization and liquid-liquid wash regimes, with direct scaling limited by yield or operational bottlenecks such as iodine recovery efficiency.
Expected growth links directly to pharmaceutical fine chemicals. Over the next 3–5 years, development pipelines for new small-molecule drugs and advanced electronics are likely to increase demand for specialty halogenated intermediates. Regulations in the EU and North America push a move towards traceable, contaminant-controlled supply chains, leading to tighter cooperation between R&D and QC in manufacturers’ plants. Bulk volume growth appears moderate, with most increase concentrated in demand for higher-purity and fit-for-purpose grades.
Production lines currently transition from traditional halide exchange toward more atom-efficient coupling methods under milder conditions, reflecting both safety and cost drivers. Inline monitoring and digital batch tracking see rapid adoption to improve batch reproducibility and traceability. Suppliers investing in single-pot synthesis routes and automated purification systems will retain technical advantages as customers demand extensive batch documentation and reproducibility. Reactive waste and iodine recovery represent persistent challenges but motivate further innovation in process engineering.
Responsibility for iodine source stewardship shapes both supplier selection and production route. Green chemistry projects in this sector target solvent recycling, minimized halogen loss, and waste stream neutralization. Projects that use less hazardous reagents or water-based extractions gain traction—especially for export-focused facilities needing to meet stringent global regulatory requirements. Customers increasingly audit suppliers on the basis of their sustainable practices, making ongoing investment in green process development essential.
Direct manufacturer technical teams address inquiries about batch history, impurity profiles, and custom grade requirements. Support goes beyond datasheet provision, focusing on consultation around process compatibility, downstream reactivity, and purification strategy tailoring. Customers with R&D-scale projects receive direct access to laboratory experts for rationalizing scale-up and minimizing unexpected reactivity stemming from trace impurities.
Technical staff frequently work with customers to resolve bottlenecks in reaction yield, product crystallization, or byproduct suppression. Application optimization covers recommendations on solvent compatibility, reaction order, and workup methodology based on internal experience with multiple product grades. For electronic and advanced material end-uses, teams collaborate over extended trials to establish precise handling protocols and impurity screening aligned with the end application’s performance criteria.
Each shipment is traced from raw material entry through final QC to testing history for the lot. In case of technical issues, direct communication between customer and in-house production or analytical team is prioritized to reconstruct process variables and resolve queries such as trace contaminant identification or batch-to-batch deviation. Ongoing partnerships often include feedback cycles and continuous improvement projects, where customers’ evolving requirements directly influence process modification and grade expansion. After-market service centers around traceability, documentation, and tailored solutions that support efficient, uninterrupted supply for demanding sectors.
At our facility, the complete process of synthesizing 4-Iododiphenyl Ether takes place under monitored batch operations. Our team oversees every step from raw material selection to final product drying, including halogenation, purification, and isolation, so we maintain full technical control over compositional integrity. The manufacturing setup supports both routine and scale-up production runs, giving large-volume customers and specialty project buyers the same level of reliability in terms of availability and lead time.
End-use customers include advanced intermediates suppliers, pharmaceutical compound developers, and specialty material manufacturers. 4-Iododiphenyl Ether serves as a key intermediate for scientist-driven projects and industrial synthesis flows. High-purity batches allow medicinal chemists to create aryl ether scaffolds and enable electronics sector producers to access materials for custom-engineered coatings and dielectric layers. Chemical plants utilize the product in cross-coupling reactions, and developers in agrochemicals select it for custom pesticides and specialty intermediates.
Facility management applies strict analytical standards and lot-traceability. Each lot undergoes inspection according to set specifications—typically by instrumental analytics such as GC, HPLC, and titration—supported by our internal QC labs. We adhere to industry protocols that restrict heavy metals, moisture content, and residual solvents, providing assurance that every batch reaches downstream processing without costly correction or reformulation. Full product documentation accompanies each shipment, and analytical scan sheets remain available for ongoing projects or regulatory review.
Handling and packaging of 4-Iododiphenyl Ether take place under inert atmospheres to prevent contamination or degradation. We use closed-system filling stations to load lined drums, custom pails, and bulk containers according to user plant needs. The logistics department arranges loading dates, batch-tagged documentation, and works with preferred carriers to address special transit, customs clearance, and warehousing required for sensitive goods.
Process chemists, R&D leads, and plant operation managers have direct access to technical support from our internal chemistry team. Whether it is a question about compatibility in a Grignard or Suzuki coupling, or a review of new synthetic protocols, our chemists provide tailored technical backing. We help troubleshoot scale-up questions and support changes to packaging, fill sizes, or intermediate semi-finished blends as process requirements shift.
Chemical manufacturers, procurement specialists, and distributors obtain transparent control over sourcing due to our status as the direct maker of 4-Iododiphenyl Ether. Purchasing from our site removes multi-step supply risks and secures negotiation leverage on terms, timing, and packaging. Our process minimizes quality deviations and supply interruptions that can otherwise impact project deadlines and manufacturing uptime. This approach supports bottom-line costs, strengthens QA compliance, and benefits long-term supplier relationships for downstream users in both established sector plants and growing innovation-driven labs.
4-Iododiphenyl Ether plays a specific role across synthetic research, reference standard preparation, and method development. Over years of manufacturing this aromatic ether, we have seen that academic and industrial labs regularly scrutinize two factors: purity and solubility. Reliable analytical results depend on what goes into the flask, not just what leaves the warehouse.
As a direct manufacturer, we deliver 4-Iododiphenyl Ether with purity that meets or exceeds 98%. This grade provides consistent baseline performance for organoiodine chemistry, cross-coupling reactions, and analytical applications. Ingredients are sourced under tight protocols; every batch passes through controlled crystallization steps and filtration. We exclude byproducts such as chlorinated and brominated diphenyl ethers at low detection limits. Each lot is checked using GC and NMR, confirming both content and trace impurity profiles.
Trace metals and halides are other points of focus. Residual potassium, sodium, and unreacted precursors in the finished product will damage sensitive catalysis, so our technical team sets regular checks with suitable detection methods. Common requests also include data on melting point and residual solvents, especially for regulated or accredited laboratories. On request, we provide the specifics determined by validated methods, supporting buyers who must satisfy GLP or ISO requirements.
Most research teams working with 4-Iododiphenyl Ether dissolve it in organic solvents. Solubility in ethanol, toluene, acetone, and ether is high enough to permit unproblematic solution preparation for chromatography, titration, and reaction set-up. Our customers frequently report successful use in these and similar solvents. In water, the solubility falls well below typical detection limits, forcing those focused on aqueous chemistry either to alter the molecular design or use cosolvents.
We receive occasional questions on stock solution concentration or handling in scale-up. Based on factory production and laboratory experience, saturated solutions for analytical work do not precipitate until room temperature is reached – and even then, only at concentrations higher than routine lab use. Where solubility data is critical, we can provide lot-specific values produced under controlled conditions.
Product consistency is not just a matter of routine. Each unit from a single batch receives the same degree of process control, meeting specifications so researchers can design experiments without unnecessary surprises. Our analytical support focuses on real-world concerns. This includes troubleshooting solubility mismatches or reviewing unexpected results in reaction set-ups. Customers in regulated industries rely on our retained batch samples and the corresponding analytical data for audit or validation purposes.
We encourage laboratories pursuing advanced or regulated work to reach out for detailed, lot-specific COA and analytical profiles. Our staff not only understands chemical synthesis but also appreciates the downstream impact of quality variances in material inputs. Direct manufacturing makes this level of traceability and responsiveness possible.
For decades, our facility has synthesized fine aromatic compounds with a strong focus on reliability and safety. 4-Iododiphenyl Ether occupies an important place in our specialty portfolio, supporting custom synthesis, advanced material research, and the creation of building blocks for pharmaceuticals and electronics. Bulk customers consistently seek clarity on two matters—how we pack this product for different scales, and how quickly we ship in the context of raw material volatility and evolving order patterns.
In production, we always prioritize containment, purity, and ease of use. Bulk shipments of 4-Iododiphenyl Ether leave the plant in drums or fiber cartons sealed with triple-layer liners to prevent moisture ingress and contact with ambient air. Our standard bulk packaging comes in 25 kg fiber drums. For larger commitments, we routinely provide 50 kg polyethylene-lined steel drums, which assure structural integrity over long hauls and rough supply routes. Clients with automation or high-throughput environments sometimes ask for larger pack sizes. Based on hard-won experience, we offer 200 kg drums with heavy-duty interior liners, along with confidence that the product will not take on extraneous odors or degrade before reaching its destination. This range allows for efficient loading, storage, and workflow on the recipient’s end.
Occasionally, specialty projects require deviation from this standard set—some partners want lots split into smaller 10 kg packages for pilot-scale trials or for controlled dispensing in clean environments. Our filling line can accommodate custom packaging configurations without significant production downtime, provided these requirements are discussed before order confirmation. No matter the vessel, we stamp each batch with clear batch numbers for traceability and provide technical documentation appropriate for each lot.
Lead time remains a central concern for planning. Most of our bulk inventory replenishment runs on a made-to-stock system, which is necessary due to demand swings. In average market conditions, shipments of 25 kg or 50 kg drums can dispatch inside two weeks once orders are confirmed and all regulatory documents are finalized. Large-scale buys exceeding half a metric ton, or requiring unique packaging, involve longer coordination—typically no more than four to six weeks, often less if raw material supplies flow smoothly.
Two issues can extend these timelines: sudden spikes in feedstock cost and specific impurity profile requirements beyond standard analytical parameters. Our team prioritizes production transparency and will flag any forecast delays as soon as we spot upstream issues. Adjusting run schedules, redirecting precursor shipments, or expanding day and night shifts gives us the flexibility to manage large, time-sensitive contracts. In the rare event of a logistics blockade, our on-site storage allows us to buffer production and stagger dispatch, mitigating disruptions.
Manufacturing specialty compounds never stays static—our team continuously upgrades both processes and operational strategy to anticipate customer challenges. With 4-Iododiphenyl Ether, we listen to feedback about drum handling, spillage risk, and the best conditions for long-haul freight. We are in the best position to incorporate those lessons into our storage, packing, and documentation practices. Clear communication and realistic scheduling prevent bottlenecks, making it possible for customers to plan with dependable lead times and packaging that meets real-world requirements.
For those managing tight project parameters, we can provide detailed documentation on packaging materials, recommended storage temperatures, and handling processes on request. Our in-house technical staff stands ready to address specification changes and guide partners to the most reliable solution based on decades of manufacturing insight and direct process control.
Shipping specialty chemicals like 4-Iododiphenyl Ether across international borders calls for direct accountability. At our factory, every consignment is a reflection of our engineering discipline, not just a box ticked on a shipping manifest. Over the years, our teams have managed the movement of this compound through challenging customs regimes and regulatory checklists worldwide. The stories making headlines around transportation restrictions and compliance are familiar to anyone handling aromatic ethers—even more so for halogenated derivatives such as those carrying iodine.
Our technical and logistics teams recognize that international rules distinguish chemicals by their hazard profiles. 4-Iododiphenyl Ether holds a specific position: while not classified under common ADR, IMDG, or IATA "dangerous goods" categories for many markets, it sits in a group that still demands unambiguous paperwork and due diligence. Shipping authorities rarely tolerate gaps or errors in declarations—especially for organic chemicals that may fall into ambiguous categories for some jurisdictions.
We complete Safety Data Sheets (SDS) in accordance with the latest GHS standards, updated as regulatory frameworks evolve. All bulk and sample shipments include an SDS, together with a Certificate of Analysis issued by our in-house quality department. For clients in the United States, our commercial invoices and air/ocean waybills include harmonized tariff codes conforming to the latest US CBP requirements, while for EU markets, REACH status declarations often accompany the shipment file. Our technical staff keep themselves updated on specific import and export rules applicable to both manufacturing and research chemicals, whether the destination is Europe, Asia Pacific, or the Americas.
Pre-shipment coordination with freight partners ensures alignment with the UN recommendations on the Transport of Dangerous Goods where required, but also the unique demands countries set for halogenated organic ethers. In most instances, 4-Iododiphenyl Ether will move outside of dangerous goods transport channels. Still, border controls occasionally request additional documentation—especially if the substance triggers local voluntary surveillance due to its structure or intended industrial use. Our export documentation always includes the full chemical name, CAS number, and ECCN if prompted by specific customs offices.
For select destinations, end user certificates or import permits may surface as requirements—less about the molecule’s hazard profile and more about the end-use scrutiny from customs or regulatory agencies concerned with chemical precursors. Over recent years, we have worked with inspectors to clarify the intended purpose, supported by product literature and technical dossiers as needed. We maintain an open line of communication with compliance officers to reduce the risk of delays or cargo holds.
Direct manufacturing and control over the entire production chain enable us to address regulatory developments swiftly. We conduct packaging in certified drums and UN-rated cartons as appropriate, even if classification status does not strictly demand it. Our operations team routinely audits documentation, pack-outs, and labelling, and we organize staff training around global chemical transport rules, both obligatory and voluntary.
Our approach is simple: safe, compliant international shipping reflects on chemical stewardship just as much as the molecular purity in the bottle. Each shipment of 4-Iododiphenyl Ether carries a complete documentation pack, technical support direct from our plant, and the benefit of continuous regulatory surveillance from people who make the product, not just move boxes.
For product inquiries, sample requests, quotations or after-sales support, please feel free to contact me directly via sales2@liwei-chem.com, +8615380400285 or WhatsApp: +8615380400285
