Phthalic anhydride, abbreviated as PA, is a cyclic anhydride formed by dehydration of phthalic acid in the molecule. Phthalic anhydride is a white solid and is an important raw material in the chemical industry. Mainly used in dyes, pharmaceuticals, polyester resins, alkyd resins, plastic plasticizers, etc.
| Item | Standard | Testing Result |
|---|---|---|
| Appearance | White scale or crystalline powder | White scale or crystalline powder |
| Purity (%) | 99.5 Min. | 99.97 |
| Melting Chroma / (Co No) | 20 Max. | 15 |
| Crystallizing Point (℃) | 130.5 Min. | 130.50 |
| Thermally stable chroma / (Co No) |
50 Max. | 40 |
| Free acid mass fraction/ % | 0.20 Max. | 0.03 |
In compound paper bags or plastics woven bags with PE bags inside (net weight: 25/500kg), 15MT/20’FCL with pallet, 27MT/40’FCL with pallet.
It should be kept in a dry and cool place. It is a corrosive material and it should be stored in a separated safety storage cabinet or room, keep away from sources of ignition.
Hazard Class: 8
UN/NA: UN2214
Packing Group: III
