phthalic anhydride

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phthalic anhydride
Posting date : Oct 11, 2010
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29-
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Commodity name: Phthalic anhydride Chemical formula: C8H4O3 CAS No.: 85-44-9 Name Phthalic anhydride Item Superior degree First grade Apperance White flakes or crystalline powder Fused color(color number)% ≤ 20 50 Crystallization point ℃ ≥ 130.5 130.3 Heat-stable color %≤ 50 150 Purity %≥ 99.5 98 Free acid content % ≤ 0.5 0.5 Ash % ≤ 0.05 0.05

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