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Pigment Red 87

Catalog Number DYE-PIG-0437
CAS Number 6371-11-5
Structure
Synonyms Indo Red MV-6632
Molecular Weight 365.26
Molecular Formula C16H6Cl2O2S2
CI Number C.I.73310
Color blue light red.
Lightfastness Well
Main Molecular Structure Thioindigo
Oleic Acid Insoluble
Preparation Method 7-Chlorobenzo[b]thiophen-3(2H)-one oxidation.
Properties Insoluble in water and difficult to soluble in Xylene, ethanol and paint solvent, insoluble in aliphatic hydrocarbon oil solvent and oleic acid. Not with 5% hydrochloric acid, 5% sodium carbonate and 10% naoh solution mixed.

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