Pigment Yellow 181
Name:C.I.Pigment Yellow 181,C.I.11777
Molecular Structure: Single azo
C.I.Pigment Yellow 181 ,C.I.11777,CAS 74441-05-7,499.48,C25H21N7O5,Yellow K3R,PV Fast Yellow H3R
Molecular Formula:C25H21N7O5
Molecular Weight: 499.48
CAS Registry Number:74441-05-7
Manufacturing Methods : 4-(4-Aminobenzamido)benzamide diazotization, and 3-Oxo-N-(2-oxo-2,3-dihydro-1H-benzo[d]imidazol-5-yl)butanamide coupling.
Properties and Applications:red light yellow. Suitable for PVC, PO, ABS, PE, coloring, also used for exterior wall coating, high heat resistance, light fastness.
| Light Fastness | Heat resistance(℃ ) | Sodium carbonate(5%) | Muriatic acid(5%) | Oleic acid | PVC migration | Soap micelle bleeding | |
| Melting point | Stable | ||||||
| 8 | 290(5min)5 | 5 | 5 | 5 | |||
List of Suppliers:
PV Fast Yellow H3R ( Clariant GmbH )
PV Fast Yellow H3R( Hoechst A G )
Yellow K3R( Keystone Aniline Corporation )