Introduction
Name: Phthalic anhydride
CAS No: 85-44-9
Molecular Formula: C8H4O3
Phthalic anhydride is a white crystalline powder, insoluble in cold water, slightly soluble in hot water, ether, soluble in ethanol, pyridine, benzene, carbon disulfide, etc. It is an important organic chemical raw material. It is an important intermediate for the preparation of phthalate plasticizers, coatings, saccharin, dyes and organic compounds.
Specifications
|
ITEM |
STANDARD DATA |
|
Appearance |
White scaly or crystalline powder |
|
Melting chromaticity (Pt-Co) |
≤20 |
|
Thermal stability chromaticity (Pt-Co) |
≤50 |
|
Sulfuric acid chromaticity (Pt-Co) |
≤40 |
|
Purity % |
≥99.5 |
|
Free Acid % |
≤0.2 |
|
Solidification point ℃ |
≥130.5 |
Packing: 25kg/bag.
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Application
Phthalic anhydride is an important organic chemical raw material, which is an important intermediate for the preparation of phthalate plasticizers, coatings, saccharin, dyes and organic compounds.
Chemical & physical properties
|
Molecular formula |
C8H4O3 |
|
Molecular weight |
148.116 |
|
CAS NO |
85-44-9 |
|
EINECS NO |
201-607-5 |
|
Density |
1.53 g/cm³ |
|
Appearance |
white flakes |
|
Flash point |
152 ℃ |
|
Melting point |
131 - 134 ℃ |
|
Boiling point |
284-295 ℃ |
|
Water Solubility |
0.62 g/100g (20-25 °C); 19.0 g/100g (100 °C); reacts slowly |
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