PIGMENT YELLOW 191: 1
Synonyms: C. I. Pigment Yellow 191: 1
C. I. 18795
Pigment Brilliant Yellow HGR
4-Chloro-2-[[4, 5-dihydro-3-methyl-5-oxo-1-(3-sulfophenyl)
-1H-pyrazol-4-yl]azo]-5-methylbenzenesulfonic acid calcium salt (1: 1)

Foreign relative brand:
HOSTAPRINT Yellow HGR 32 (CLAR)
PV Fast Yellow H2GR VP 2293 (DYSR)
PV Fast Yellow HGR(CLAR)
PV Fast Yellow HGR [W](HOE)
Yellow KGR(KEY)

1. Product Name
Trade Name: Fast Yellow HGR
C. I. Number: Pigment Yellow 191: 1
CAS Number: 129423-54-7
EU Number: 403-530-4
Chemical Family: Mono azo

2. Physical, Chemical and Fastness Properties
Molecular Weight: 524.99
Molecular Formula: C17H13ClN4O7S2Ca
P. H. Value: 7.0
Density: 1.6
Oil Absorption(ml/100g): 40
Light Fastness: 7
Heat Resistance: 300º C
Water Resistance: 5
Oil Resistance: 5
Acid Resistance: 5
Alkali Resistance: 5

3. Application