CAS No.: | 85-44-9 |
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Formula: | C8h4o3 |
EINECS: | 201-607-5 |
Type: | Synthesis Material Intermediates |
Appearance: | Powder |
Quality: | Industrial |
Samples: |
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Customization: |
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PRODUCT |
PHTHALIC ANHYDRIDE(ORTH BASED) |
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OPERATIVE |
GB/T 15336-2013 |
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NO. |
CHECK ITEM |
QUALITY INDEX |
RESULTS |
|
1 |
APPEARANCE |
WHITE FLAKES OR CRYSTALLINE POWDER |
WHITE FLAKES OR CRYSTALLINE POWDER |
|
2 |
MOLTEN COLOUR (PT-CO) |
≤20 |
10 |
|
3 |
HEAT COLOUR (PT-CO) |
≤40 |
30 |
|
4 |
SULPHURIC ACID COLOUR (PT-CO) |
≤40 |
20 |
|
5 |
PURITY/% |
≥99.5 |
99.96 |
|
6 |
CRYSTALLIZATION POINT ºC |
≥130.5 |
131.2 |
|
7 |
FREE ACID /% |
≤0.20 |
0.015 |
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