Pigment Red 146

Product NamePIGMENT RED 146
SynonymsC.I.Pigment Red 146; C.I.PR146; PR146; P.R.146
CAS NO.52-68-2
Molecular Weight611.04
Molecular FormulaC33H27ClN4O6
ColorRed powder

Molecular structure formula:

Fastness Properties of Pigment Red 146:

Light Fastness5
Heat Resistance(℃)180
Water Resistance5
Oil Resistance5
Acid Resistance4
Alkali Resistance4
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 146:

Pigment Red 146 is slightly yellowish than pigment red 57:1. The specific surface area of Permanent Carmine FBB 02 is 36m2/g. It is mainly used for printing inks and coatings. The solvent resistance and sterilization treatment of printed samples are better than pigment red 57:1, heat stability 200℃/10min, 20℃ higher than pigment red 57:1, light resistance grade 5, better than pigment red 57:1 high 0.5-1 level; lightfastness level 7 (1/1SD) on fabric printing; also used in latex paint and architectural coatings, combined with molybdenum chrome orange to create a non-transparent red color; hard PVC coloring lightfastness level 8 Grade; brown with pigment yellow 83 and carbon black, used for wood coloring.

Pigment Red 146 is a naphthol carmine dye. This product's density is 1.5 g/cm3 and its pH value is 7.0. Its molecular weight is 611.04. Pigment Red 146 is a semi-transparent, slightly bluish monoazo red pigment. It is recommended for general industrial coatings, textile printing, offset inks, water-based inks, UV inks, and is especially recommended for solvent-based inks.

TDS (Pigment Red 146) MSDS (Pigment Red 146)


  • Pigment Red 146
  • 5280-68-2
  • N-(4-chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-[[2-methoxy-5-(phenylcarbamoyl)phenyl]diazenyl]naphthalene-2-carboxamide
  • (4Z)-N-(4-chloro-2,5-dimethoxyphenyl)-4-[[2-methoxy-5-(phenylcarbamoyl)phenyl]hydrazinylidene]-3-oxonaphthalene-2-carboxamide
  • N-(4-Chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-((2-methoxy-5-((phenylamino)carbonyl)phenyl)azo)naphthalene-2-carboxamide
  • PigmentRed146
  • 2-Naphthalenecarboxamide, N-(4-chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-((2-methoxy-5-((phenylamino)carbonyl)phenyl)azo)-
  • 2-Naphthalenecarboxamide, N-(4-chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-[[2-methoxy-5-[(phenylamino)carbonyl]phenyl]azo]-
  • Pigment Red 146, tech.
  • C33H27ClN4O6
  • DTXSID3063754
  • SCHEMBL12954942
  • SCHEMBL14497174
  • EINECS 226-103-2
  • MFCD00071995
  • AKOS037647858
  • ZINC100049553
  • P.R.146
  • 2-Naphthalenecarboxamide,N-(4-chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-[[2-methoxy-5-[(phenylamino)carbonyl]phenyl]azo]-
  • AS-75061
  • V0990
  • D93848
  • EC 226-103-2
  • 280P682
  • W-110020
  • 2-Naphthalenecarboxamide, N-(4-chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-(2-(2-methoxy-5-((phenylamino)carbonyl)phenyl)diazenyl)-
  • N-(4-chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-[(1E)-2-[2-methoxy-5-(phenylcarbamoyl)phenyl]diazen-1-yl]naphthalene-2-carboxamide
  • N-(4-Chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-[[2-methoxy-5-[(phenylamino)carbonyl]phenyl]azo]naphthalene 2-carboxamide

IUPAC Name: N-(4-chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-[[2-methoxy-5-(phenylcarbamoyl)phenyl]diazenyl]naphthalene-2-carboxamide
InChI: InChI=1S/C33H27ClN4O6/c1-42-27-14-13-20(32(40)35-21-10-5-4-6-11-21)16-26(27)37-38-30-22-12-8-7-9-19(22)15-23(31(30)39)33(41)36-25-18-28(43-2)24(34)17-29(25)44-3/h4-18,39H,1-3H3,(H,35,40)(H,36,41)
Canonical SMILES: COC1=C(C=C(C=C1)C(=O)NC2=CC=CC=C2)N=NC3=C(C(=CC4=CC=CC=C43)C(=O)NC5=CC(=C(C=C5OC)Cl)OC)O

Property NameProperty Value
Molecular Weight611
Hydrogen Bond Donor Count3
Hydrogen Bond Acceptor Count8
Rotatable Bond Count9
Exact Mass610.1619123
Monoisotopic Mass610.1619123
Topological Polar Surface Area131 Ų
Heavy Atom Count44
Formal Charge0
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently-Bonded Unit Count1
Compound Is CanonicalizedYes