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Pigment Orange 40

Catalog Number DYE-PIG-0519
CAS Number 128-70-1
Synonyms Monolite Fast Gold Orange GV
Molecular Weight 406.43
Molecular Formula C30H14O2
CI Number C.I.59700
Color yellow orange
Main Molecular Structure Anthrone
Preparation Method (a)1-(2-Methyl-9,10-dioxoanthracene-1-yl)-2-methylanthracene-9,10-dione in 350 ~ 380 ℃ heating alone, or in low temperatures with dehydrant processing, to take off two Moore water; (b), 1-(2-Methyl-9,10-dioxoanthracene-1-yl)-2-methylanthracene-9,10-dione aqueous paste content (with or without ammonia or salt are), in 230 ~ 250 ℃ and pressure heating 10 to 12 hours; (c), 1-(2-Methyl-9,10-dioxoanthracene-1-yl)-2-methylanthracene-9,10-dione and ethanol/potassium hydroxide heating; (d)1,6-Dibenzoylpyrene with Aluminium chloride and Sodium chloride molten, and pass into oxygen.
Properties Soluble in 1,2,3,4-Tetrahydronaphthalene, xylene, slightly soluble in alcohol

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