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Pigment Red 173

Catalog Number DYE-PIG-0402
CAS Number 12227-77-9
Structure
Synonyms Cosmetic Rubine,Rhodamine Lake 16688
Molecular Weight 444.57
Molecular Formula C28H32N2O3
CI Number C.I.45170:3
Color red
Main Molecular Structure Xanthene
Preparation Method 3-(Diethylamino)phenol and Phthalic anhydride condensation, alkali fusion, with sulfuric acid, hydrochloric acid acid soluble crystallization and changed into aluminum salt; (b) 2-(3,6-Dichloro-9H-xanthen-9-yl)benzoic acid and Diethylamine in pressure reaction (BP 960088) and changed into aluminum salt.

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