BASIC INFO
Product Description
Phthalic anhydride is an organic compound with molecular formula c8h4o3. It is a cyclic anhydride
formed by intramolecular dehydration of phthalic acid. Phthalic anhydride is a white solid. It is an
important raw material in chemical industry, especially in the manufacture of plasticizer. Hydrolysis,
alcoholysis and ammonolysis can occur, and anthraquinone derivatives can be synthesized by
reacting with aromatic hydrocarbons. Phthalic anhydride is industrially prepared by vapor phase
oxidation of naphthalene and air at 350 ~ 360 ºC under the catalysis of vanadium pentoxide.
It can also be prepared by air oxidation of o-xylene.
Phthalic anhydride uses
1.Phthalic anhydride is one of the most important organic chemical raw materials, and its main
derivatives are dibutyl phthalate; Dioctyl ester and diisobutyl ester are used as plasticizers for
PVC, etc; It can also be used to produce unsaturated polyester resin; Alkyd resin; Dyes and
pigments; Various paints; Food additives; Phenolphthalein, a laxative in medicine; Imiphos in
pesticides; Clomazone and saccharin sodium, etc.
2.Phthalic anhydride is used as curing agent of epoxy resin.
Phthalic anhydride product package
Packed in lined plastic bags and covered with woven bags, with a net weight of 25kg and 50kg;
It can also be packed in lined plastic bags and external iron barrels or wooden barrels, with a
net weight of 50kg.
Phthalic anhydride is an organic compound with molecular formula c8h4o3. It is a cyclic anhydride
formed by intramolecular dehydration of phthalic acid. Phthalic anhydride is a white solid. It is an
important raw material in chemical industry, especially in the manufacture of plasticizer. Hydrolysis,
alcoholysis and ammonolysis can occur, and anthraquinone derivatives can be synthesized by
reacting with aromatic hydrocarbons. Phthalic anhydride is industrially prepared by vapor phase
oxidation of naphthalene and air at 350 ~ 360 ºC under the catalysis of vanadium pentoxide.
It can also be prepared by air oxidation of o-xylene.
| Item | Standard |
| Product Name | O-Phthalic Anhydride,Phthalic Anhydride,PA |
| Purity | ≥99.5% |
| CAS NO | 85-44-9 |
| EINECS No. | 201-607-5 |
| Appearance | White scale or crystalline powder |
| Melting chromaticity number | ≤20 |
| Crystallization point ºC | ≥130.8 |
| Thermal stability color number | ≤50 |
| Free acid% | ≤0.20 |
| Molecular Formula | C8H4O3 |
| Application | Plasticizer Manufacturing Raw Material.Curing agent for epoxy resin etc. |
1.Phthalic anhydride is one of the most important organic chemical raw materials, and its main
derivatives are dibutyl phthalate; Dioctyl ester and diisobutyl ester are used as plasticizers for
PVC, etc; It can also be used to produce unsaturated polyester resin; Alkyd resin; Dyes and
pigments; Various paints; Food additives; Phenolphthalein, a laxative in medicine; Imiphos in
pesticides; Clomazone and saccharin sodium, etc.
2.Phthalic anhydride is used as curing agent of epoxy resin.
Phthalic anhydride product packagePacked in lined plastic bags and covered with woven bags, with a net weight of 25kg and 50kg;
It can also be packed in lined plastic bags and external iron barrels or wooden barrels, with a
net weight of 50kg.