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Phthalic Anhydride - Ecommerce website

Phthalic Anhydride

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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.
Specification
PRODUCT
PHTHALIC ANHYDRIDE
OPERATIVE
GB/T 15336-2013
NO.
CHECK ITEM
QUALITY INDEX
RESULTS
1
APPEARANCE
WHITE NEEDLE SHAPED CRYSTALS OR FLAKE-SHAPED SRYSTALS
WHITE NEEDLE SHAPED CRYSTALS
2
Fused chroma(Chroma No.)
≤20
10
3
Chroma of therma stability(Chroma No.)
≤40
30
4
Chroma of sulphuric acid(Chroma No.)
≤40
20
5
Free acid(Mass fraction)%
≤0.10
0.028
6
Purity%
≥99.9
99.94
7
Benzoic Acid%
≤0.05
0.001

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