Pigment Yellow 191:1
Name:C.I.Pigment Yellow 191:1,C.I.18795:1
Molecular Structure: Single azo
C.I.Pigment Yellow 191:1,C.I.18795:1,CAS 154946-66-4,486.91,C17H15ClN4O7S2,Cromophtal Yellow HRP,Cromophtal Yellow HRPA
Molecular Formula:C17H15ClN4O7S2
Molecular Weight: 486.91
CAS Registry Number:154946-66-4
Manufacturing Methods :2-Amino-4-chloro-5-methylbenzenesulfonic acid diazotization, and 1-(3-Sulfophenyl)-3-methyl-5-pyrazolone coupling, 2-Aminonaphthalene-1-sulfonic acid diazotization, and 1-(3-Sulfophenyl)-3-methyl-5-pyrazolone coupling, and then into two ammonium salt.
Properties and Applications:brilliant red light yellow. Used in printing ink, paint, plastic coloring.
| Light Fastness | Heat resistance(℃ ) | Sodium carbonate(5%) | Muriatic acid(5%) | Oleic acid | PVC migration | Soap micelle bleeding | |
| Melting point | Stable | ||||||
| 6-7 | 280 | Excellent | No | ||||
List of Suppliers:
Cromophtal Yellow HRP ( Ciba Specialty Chemicals Inc )
Cromophtal Yellow HRPA( Ciba Specialty Chemicals Inc )
[…] C.I.Pigment Yellow 191:1 […]