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HS Code |
230686 |
| Chemical Name | O-Phthalic Anhydride |
| Iupac Name | 1,3-Isobenzofurandione |
| Cas Number | 85-44-9 |
| Molecular Formula | C8H4O3 |
| Molar Mass | 148.12 g/mol |
| Appearance | White crystalline solid |
| Melting Point | 131°C |
| Boiling Point | 284°C |
| Density | 1.53 g/cm³ |
| Solubility In Water | Reacts to form phthalic acid |
| Odor | Pungent, irritating odor |
| Vapor Pressure | 0.021 mmHg at 25°C |
| Flash Point | 152°C |
| Refractive Index | 1.624 (at 119°C) |
| Ec Number | 201-607-5 |
As an accredited O-Phthalic Anhydride factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
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Purity 99.5%: O-Phthalic Anhydride with 99.5% purity is used in the synthesis of plasticizers for PVC manufacturing, where it enables high flexibility and durability in the final product. Melting Point 131°C: O-Phthalic Anhydride with a melting point of 131°C is used in alkyd resin production for paints, where it ensures uniform polymerization and enhanced surface finish. Low Moisture Content (<0.1%): O-Phthalic Anhydride with low moisture content is used in high-performance polyester resin production, where it prevents hydrolysis and optimizes mechanical strength. Particle Size <75 μm: O-Phthalic Anhydride with particle size less than 75 micrometers is used in powder coating formulations, where it improves dispersibility and coating uniformity. Stability Temperature 150°C: O-Phthalic Anhydride with a stability temperature of 150°C is used in the manufacture of curing agents for epoxy resins, where it provides reliable reaction control and thermal resistance. Molecular Weight 148.1 g/mol: O-Phthalic Anhydride with a molecular weight of 148.1 g/mol is used in the production of dye intermediates, where it enables precise chemical conversions and consistent color yield. |
| Packing | O-Phthalic Anhydride is packaged in a 25 kg net weight fiber drum with inner polyethylene lining, clearly labeled for safety. |
| Container Loading (20′ FCL) | O-Phthalic Anhydride is typically loaded into a 20′ FCL (Full Container Load) as 25kg bags or fiber drums, totaling 16–20 metric tons. |
| Shipping | O-Phthalic Anhydride is shipped in tightly sealed containers, such as drums or bags, to prevent moisture absorption and contamination. Transport is conducted in accordance with regulations for hazardous materials. Proper labeling, ventilation, and temperature control are required to avoid exposure, and handling is performed by trained personnel using appropriate safety equipment. |
| Storage | O-Phthalic anhydride should be stored in a cool, dry, well-ventilated area, away from moisture, heat sources, and incompatible materials such as strong oxidizers and bases. Store in a tightly closed, labeled container made of material resistant to corrosion. Protect from physical damage and avoid prolonged exposure to air to prevent hydrolysis. Always follow appropriate chemical storage regulations and safety guidelines. |
| Shelf Life | O-Phthalic Anhydride typically has a shelf life of 2 years when stored in tightly sealed containers under cool, dry conditions. |
Competitive O-Phthalic Anhydride prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615380400285 or mail to sales2@liwei-chem.com.
We will respond to you as soon as possible.
Tel: +8615380400285
Email: sales2@liwei-chem.com
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