Basic Information
- Product Name:Phthalic anhydride
- Other Names:2,5-Isobenzofurandione; 2-benzofuran-1,3-dione; 2,2′-(oxydicarbonyl)dibenzoic acid; o-Phthalic anhydride
- Molecular Formula:C8H4O3
- UN No.:2214
- HS No.:2917350000
- CAS No. :85-44-9
- EINECS No.:201-607-5
- Hazard Class:8
- Appearance:White Solid
Physical and Chemical Properties
Phthalic anhydride is the organic compound with the formula C6H4(CO)2O. It is the anhydride of phthalic acid. Phthalic anhydride is a principal commercial form of phthalic acid.
Application
a.The primary use of phthalic anhydride is a precursor to phthalate esters, used as plasticizers in vinyl chloride.
b.Quinoline Yellow SS is a popular dye derived from the condensation of phthalic anhydride and 2-methylquinoline.
Phthalic anhydride is widely used in industry for the production of certain dyes.
c.Pharmaceuticals.Phthalic anhydride treated with cellulose acetate gives cellulose acetate phthalate (CAP), a common enteric coating excipient that has also been shown to have antiviral activity. Phthalic anhydride is a degradation product of CAP.
Safety
The most probable human exposure to phthalic anhydride is through skin contact or inhalation during manufacture or use. Studies show that exposure to phthalic anhydride can cause rhinitis, chronic bronchitis, and asthma. Phthalic anhydride’s reaction on human health is generally an asthma–rhinitis–conjunctivitis syndrome or a delayed reaction and influenza-like symptoms and with increased immunoglobulin (E and G) levels in the blood.
ABOUT US
We work in this field for about 16 years, and the annual output of Phthalic anhydride is about 800,000 tons.
OUR ADVANTAGE
1.Quickly and timely response
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