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Pigment Orange 4

Catalog Number DYE-PIG-0532
CAS Number 21889-27-0
Structure
Synonyms Helio Fast Orange G
Molecular Weight 431.87
Molecular Formula C24H18ClN3O3
CI Number C.I.12459
Color brilliant red light orange.
Lightfastness Well
Main Molecular Structure Single azo
Preparation Method M-chloroaniline diazotization, and 2'-Methoxy-3-hydroxy-2-naphthanilide coupling.

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