CAS No.: | 85-44-9 |
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Formula: | C8h4o3 |
EINECS: | 201-607-5 |
Type: | Phthalic Anhydride |
Appearance: | Powder |
Quality: | Industrial |
Samples: |
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Customization: |
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Item | Index | ||
Top grade | First grade | Qualified product | |
Appearance | white scaly or crystalline powder | white scaly or crystalline powder with slight colors |
|
molten Chroma(Chroma no. )≤ | 20 | 50 | 100 |
thermostable Chroma(Chroma no. )≤ | 50 | 150 | - |
Chroma of vitriol(Chroma no. )≤ | 60 | 100 | 150 |
crystallization point°C≥ | 130.5 | 130.3 | 130.0 |
Purity(mass fraction)%≥ | 99.80 | 99.50 | 99.00 |
Free acid(mass fraction)≤ % | 0.20 | 0.30 | 0.50 |
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