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Pigment Red 90:1

Catalog Number DYE-PIG-0433
CAS Number 15876-39-8
Structure
Synonyms Ariabel Geranium 300506, Cogilor Almandine 90110, D&C Red No 21
Molecular Weight 647.89
Molecular Formula C20H8Br4O5
CI Number C.I.45380:3
Color brilliant red
Main Molecular Structure Xanthene
Preparation Method Fluorescein (C.I.Acid Yellow 73,C.I.45350) in water or ethanol solution bromine into four bromine derivatives,and then into aluminum salt.

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