Pigment Red 221
Name:C.I.Pigment Red 221,C.I.20065
Molecular Structure: Double azo
Molecular Formula:C50H42Cl2N6O8
Molecular Weight: 925.81
CAS Registry Number:61815-09-6/71566-54-6
Manufacturing Methods : Isopropyl 3-amino-4-methylbenzoate (2 Moore) diazotization, and 1,4-Dichloro-2,5-bis(2-hydroxy-2-naphthamido)benzene coupling.
Properties and Applications:blue light red. Suitable for PVC, PE color.
Light Fastness | Heat resistance(℃ ) | Sodium carbonate
(5%) |
Muriatic acid
(5%) |
Oleic acid | PVC migration | Soap micelle bleeding | |
Melting point | Stable | ||||||
6-7 | 210
(Good) |
5 | 5 | 5 | 4-5 | 5 |
List of Suppliers:
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Pigment Red 221 (CPMA)
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