Phthalic Anhydride Cas No. 85-44-9

Phthalic Anhydride(PA),Cas No. 85-44-9  is an Organic Compound with the chemical formula C8H4O3. It is a cyclic anhydride formed by dehydration of phthalic acid molecules. It is a white crystalline powder, insoluble in cold water, slightly soluble in hot water and ether, and soluble in ethanol, pyridine, benzene, carbon disulfide, etc. It is an important organic chemical raw material.

Phthalic anhydride is an important organic synthetic raw material widely used in fields such as dyes, pigments, plastics, rubber, pharmaceuticals, etc. It can be prepared through anhydride reaction and can react with various compounds to form different organic compounds.

As an intermediate of dyes and pigments, phthalic anhydride can be used to produce various colors of dyes and pigments, and is widely used in industries such as textiles, paints, and inks. It has good light resistance and durability, which can make the product have bright colors and long-lasting retention.

In the plastic and rubber industries, phthalic anhydride can be used as a raw material for plasticizers and stabilizers. It can improve the softness and ductility of plastics and rubber, and increase the toughness and durability of products.

In addition, phthalic anhydride can also be used for the preparation of drugs. It can be used as a raw material for synthesizing antibiotics, anticancer drugs, and other drugs, and has important pharmaceutical value.