Phthalic AnhydridePhthalic anhydride is the organic compound with the formula C6H4(CO)2O. It is the anhydride of phthalic acid. This colourless solid is an important industrial chemical, especially for the large-scale production of plasticizers for plastics. Specification of Phthalic Anhydride flakes 99 pct minCharacteristics
| Purity (m/m), wt% |
99.64 |
| Crystallizing point, 0C,min |
130.9 |
| Iron (Fe) (m/m), wt% |
0.000006 |
| Phthalic acid content, wt% , min |
Absent |
| Maleic anhydride (m/m), wt%, max |
0.001 |
| Ash (m/m), wt%, max |
0.001 |
Melted products color,
Hasen units, max
-at output |
15 |
Melted products colour after
heating at 2500C during 90 minutes,
Hasen units: - at output |
40 |
|
