Customization: | Available |
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CAS No.: | 85-44-9 |
Formula: | C8h4o3 |
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Phthalic anhydride is a white solid and is an important raw material in chemical industry, especially for the manufacture of plasticizers. Important plasticizer. Used in the paint industry; production of unsaturated polyester resins for the manufacture of insulating varnishes and glass fiber reinforced plastics, also for pharmaceutical synthesis.
CHECK ITEM | QUALITY INDEX | RESULTS |
APPEARANCE | WHITE NEEDLE SHAPED CRYSTALS OR FLAKE-SHAPED SRYSTALS | WHITE NEEDLE SHAPED CRYSTALS |
Fused chroma(Chroma No.) | ≤20 | 10 |
Chroma of therma stability(Chroma No.) | ≤40 | 30 |
Chroma of sulphuric acid(Chroma No.) | ≤40 | 20 |
Free acid(Mass fraction)% | ≤0.10 | 0.028 |
Purity% | ≥99.9 | 99.94 |
Benzoic Acid% | ≤0.05 | 0.001 |
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