Phthalic Anhydride (PA) CAS 85-44-9
Sinochem is a major Phthalic Anhydride supplier. Meanwhile, our firm staffs a group of experts devoted to your development of China Phthalic Anhydride.
2-Benzofuran-1,3-dione is a cyclic anhydride generated by dehydration of phthalic acid molecules. It is a white solid and an important chemical raw material, especially used in the manufacture of plasticizers.
- High Reactivity – Reacts readily with alcohols and amines, making it essential for synthesizing esters and imides.
- Wide Industrial Applications – Key component in coatings, adhesives, inks, and electrical insulation materials.
- Excellent Compatibility – Blends well with various polymers and resins, enhancing flexibility and durability
Phthalic Anhydride Description
Name: Phthalic anhydride (PA)
Synonyms: 2-Benzofuran-1,3-dione / Phthalandione /Isobenzofuran-1,3-dione
Molecular Formula: C8H4O3
Molecular Weight: 148.12
CAS NO.: 85-44-9
Density: 1.4±0.1 g/cm3
Boiling point: 284 ºC
Melting point: 129-132 ºC
Flashing point: 152 ºC
Appearance: White crystalline solids
Water Solubility: Insoluble in cold water, slightly soluble in hot water, ether, soluble in ethanol, pyridine, benzene, carbon disulfide and other organic solvents.
Properties: White needle-shaped crystals. Flammable, easy to sublime below boiling point, with a slight odor. Slightly soluble in hot water and ether, soluble in ethanol, benzene and pyridine.
Package: 220kg/drum, 25kg/drum.
Storage: Store in a cool, dry, well-ventilated warehouse. Keep away from fire and heat sources. The packaging must be sealed and moisture-proof. Store separately from oxidants, reducing agents, acids and alkalis, and do not store them together. Equip with appropriate types and quantities of fire-fighting equipment. The storage area should be equipped with appropriate materials to contain leaks.
Safety Protection: It is locally irritating to the skin and mucous membranes, sometimes causing severe inflammation and blisters, and many of them form ulcers that are difficult to heal. Its toxicity is slightly lower than that of benzoic acid. In production, water spray capture method can be used to reduce the concentration of phthalic anhydride in the workshop air. Operators should wear labor protection equipment.
About Us: With over many years as a certified Phthalic anhydride manufacturer, we combine innovation with stringent production standards to deliver high-performance product.
Phthalic Anhydride Technical
| Item | Index |
| Appearance | White crystalline solids |
| Molten Chroma(Chroma No. )≤ | 20 |
| Thermostable Chroma(Chroma No. )≤ | 50 |
| Chroma Of Vitriol(Chroma No. )≤ | 60 |
| Crystallization Point°c≥ | 130.5 |
| Purity(Mass Fraction)%≥ | 99.80 |
| Free Acid(Mass Fraction)≤ % | 0.20 |
As a certified Phthalic anhydride factory, we adhere to strict quality protocols, with every batch undergoing rigorous testing to ensure consistent efficacy and safety.
Phthalic Anhydride Applications
1.Used as an analytical reagent, also used in organic synthesis.
2.One of the important organic chemical raw materials, used in the production of plasticizer, alkyd resin, unsaturated polyester resin, dyes and pigments, medicine and pesticides.
3. It is an intermediate of fungicide germicide, insecticide thionimide and herbicide fenoxon.
