Chemical name: Phthalic Anhydride（PA）

Molecular formula: C₈H₄O₃

Molecular weight: 148.11 g/mole

Properties and Specifications :

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Exterior White scaly or crystalline powder

Melting chromaticity/(chromaticity number) ≤ 20

Thermally stable chromaticity (chromaticity number)≤ 50

Sulfuric acid chromaticity/(chromaticity number)≤ 40

Crystallization point/℃ ≥ 130.5

The purity of phthalic anhydride/% ≥ 99.50

Mass fraction of free acid/% ≤ 0.20

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Shopping ideas:

Plastic bags and plastic woven bags and screw-top glass bottles, plastic bottles or tin-plated steel drums (cans), full-bottomed lattice boxes, fiberboard boxes or plywood boxes. The packaging should be complete and the loading should be secure at the time of shipment. During transportation, make sure that the container does not leak, collapse, fall or be damaged. It is strictly forbidden to mix and transport with oxidants, reducing agents, acids, alkalis, edible chemicals, etc. During transportation, it should be protected from exposure to sunlight, rain, and high temperature.

Storage method:

Store in a cool, dry, well-ventilated warehouse. Keep away from fire and heat sources. The packaging must be sealed and must not get wet. It should be stored separately from oxidizing agents, reducing agents, acids and alkalis, and should not be mixed. Equipped with the appropriate variety and quantity of fire equipment. Storage areas should be provided with suitable materials to contain spills.

Introduction to PA features and uses:

Phthalic anhydride is currently widely used in chemical, pharmaceutical, electronics, agriculture, coatings, fine chemicals and other industrial sectors. Phthalic anhydride in my country is mainly used in the production of phthalate plasticizers. Phthalic anhydride consumed accounts for about 60% of the total consumption of phthalic anhydride, dyes and paints account for 25%, and unsaturated resins and other products account for about 15%. Phthalic anhydride is an important organic chemical raw material, mainly used in the production of plastic plasticizers, alkyd resins, dyes, unsaturated resins, and certain medicines and pesticides.