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Pigment Red 251

Catalog Number DYE-PIG-0363
CAS Number 74336-60-0
Synonyms Luconyl Red 3550, Sicoflush P Red 3550, Sico Fast Red L
Molecular Weight 502.31
Molecular Formula C25H13Cl2N5O3
CI Number C.I.12925
Color brilliant red.
Lightfastness Excellent
Main Molecular Structure Single azo
Preparation Method 1-Aminoanthracene-9,10-dione diazotization, and 2-Methyl-5,7-dichloropyrazolo[5,1-b]quinazolin(1H)-9-one coupling.
PVC Migration Not recommended

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