Pigment Red 57: 1
Synonyms: C. I. Pigment Red 57: 1
C. I. 15850: 1
3-Hydroxy-4-[(4-methyl-2-sulfophenyl)azo]-2
-naphthalenecarboxylic acid calcium salt (1: 1)

Foreign relative brand:
Irgalite Magenta SMA (CIBA)
Irgalite RUBINE 4BP(CIBA)
Irgalite Rubine L4BD (CIBA)
Irgalite Rubine L4BN (CIBA)
Everbright Rubine 4B 3160 (SHIE)
Carmine 6B (KKK)
Covanail Rubine W4735 (LCW)
Irgalite Rubine LPBC (CIBA)

1. Product Name
Trade Name: Pigment red 57: 1
C. I. Number: Pigment Red 57: 1
CAS Number: 5281-04-9
EU Number: 226-109-5
Chemical Family: Mono azo

2. Physical, Chemical and Fastness Properties
Molecular Weight: 424.46
Molecular Formula: C18H12N2O6SCa
P. H. Value: 7.0-8.0
Density: 1.7
Oil Absorption (ml/100g)%: 45-55
Light Fastness: 6
Heat Resistance: 170 º C
Water Resistance: 5
Oil Resistance: 5
Acid Resistance: 4
Alkali Resistance: 4

3. Application:
Main Application: Universal