Pigment Red 57:1

Product NamePIGMENT RED 57:1
Synonyms C.I.Pigment Red 57:1; C.I.PR57:1; PR57:1; P.R.57:1
CAS NO.5281/4/9
Molecular Weight386.38
Molecular FormulaC18H14N2O6S
ColorRed powder

Molecular structure formula:  

Fastness Properties of Pigment Red 57:1:

Light Fastness3-4
Heat Resistance(℃)160
Water Resistance5
Oil Resistance5
Acid Resistance2-3
Alkali Resistance3
Alcohol Resistance4-5

Main application: Water based ink, Offset ink, Solvent based ink, Plastic, Paint, Textile printing

We have various pigment grades and properties to meet different customers’ needs, please specify your application and requirements so that we can recommend accordingly.  E-mail: sy@sypigment.com

Product Description of Pigment Red 57:1:

Pigment Red 57:1 is suitable for all kinds of printing inks. The color and light conform to the magenta color required by the four-color plate. It has high tinting power and good light fastness 4-5 (1/1SD); adding Tobic acid during synthesis can change the particle size and color light. ; Lake in the aqueous alcohol medium due to the dissociation of metal, metal ion replacement, resulting in alkaline ink storage thickening, in order to prevent the thickening of the ink, you can choose CI Pigment Red 184 (mixed and coupled products) instead ; Used in latex paint and plastics (soft PVC, LDPE).It is mainly used for the coloring of paints, inks, oil and watercolor paints, as well as for the coloring of rubber, plastic wires, electric sprays and household chemicals.

Pigment Red 57:1 is a calcium salt pigment, it is a universal type. Bluish and yellowish shades are available.

TDS (Pigment Red 57:1) MSDS (Pigment Red 57:1)


  • Pigment Red 57:1
  • Calcium 3-hydroxy-4-((4-methyl-2-sulfonatophenyl)diazenyl)-2-naphthoate
  • SCHEMBL3184561
  • 281P049

IUPAC Name:  Calcium 3-hydroxy-4-((4-methyl-2-sulfonatophenyl)diazenyl)-2-naphthoate

InChI: InChI=1S/C18H14N2O6S.Ca/c1-10-6-7-14(15(8-10)27(24,25)26)19-20-16-12-5-3-2-4-11(12)9-13(17(16)21)18(22)23;/h2-9,21H,1H3,(H,22,23)(H,24,25,26);


Canonical SMILES: CC1=CC(=C(C=C1)N=NC2=C(C(=CC3=CC=CC=C32)C(=O)O)O)S(=O)(=O)O.[Ca]

Property NameProperty Value
Molecular Weight426.5
Hydrogen Bond Donor Count3
Hydrogen Bond Acceptor Count8
Rotatable Bond Count4
Exact Mass426.0198482
Monoisotopic Mass426.0198482
Topological Polar Surface Area145 Ų
Heavy Atom Count28
Formal Charge0
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently-Bonded Unit Count2
Compound Is CanonicalizedYes