タイトルまたは説明

We produce wide range of chemical raw materials, if you are interested in, pls feel free to contact us. Commodity name: Phthalic anhydride Chemical formula: C8H4O3 CAS No.: ******9 Name Phthalic anhydride Item Superior degree First grade Apperance White flakes or crystalline powder Fused color(color number)% ≤ *0 *0 Crystallization point ℃ ≥ **0.5 **0.3 Heat-stable color %≤ *0 **0 Purity %≥ *9.5 *8 Free acid content % ≤ 0.5 0.5 Ash % ≤ 0.*5 0.*5