| CAS No.: | 85-44-9 |
|---|---|
| Formula: | C8h4o3 |
| EINECS: | 201-607-5 |
| Classification: | Substituted Benzenes |
| Shape: | Flake |
| Grade Standard: | Industrial Grade |
| Samples: |
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| Customization: |
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Audited Supplier 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 |
25 KG bags, 20MT also be packed according to customer's needs.
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