Pigment Yellow 183

Product NamePIGMENT YELLOW 183
SynonymsC.I.Pigment Yellow 183; C.I.PY183; PY183; P.Y.183
CAS NO.65212-77-3
Molecular Weight507.33
Molecular FormulaC16H12Cl2N4O7S2
ColorYellow powder

Molecular structure formula:

Fastness Properties of Pigment Yellow 183:

Light Fastness8
Heat Resistance(℃)300
Water Resistance5
Oil Resistance5
Acid Resistance5
Alkali Resistance5
Alcohol Resistance4

Main application: Plastic

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 Yellow 183:

Although their tinting strength is slightly lower, but have excellent heat resistance stability. During the coloring process of high-density polyethylene (HDPE) with a standard depth of 1/3, its thermal stability can be It can reach 300℃ without dimensional deformation, and its light fastness can reach level 7-8. It is suitable for coloring of plastics (such as engineering plastics ABS, HDPE, etc.) that require processing at higher temperatures.

Pigment Yellow 183 is a reddish monoazo yellow pigment with good weather resistance and easy dispersibility. It is recommended for coil and powder coatings, and for various plastic applications.

TDS (Pigment Yellow 183) MSDS (Pigment Yellow 183)


  • Pigment Yellow 183
  • 65212-77-3
  • C.I. Pigment Yellow 183
  • Calcium 4,5-dichloro-2-[[4,5-dihydro-3-methyl-5-oxo-1-(3-sulphonatophenyl)-1H-pyrazol-4-yl]azo]benzenesulphonate
  • calcium;4,5-dichloro-2-[[3-methyl-5-oxo-1-(3-sulfonatophenyl)-4H-pyrazol-4-yl]diazenyl]benzenesulfonate
  • 4,5-dichloro-2-4,5-dihydro-3-methyl-5-oxo-1-(3-sulphonatophenyl)-1H-pyrazol-4-ylazobenzenesulphonate (calcium salt)
  • Calcium 4,5-dichloro-2-((4,5-dihydro-3-methyl-5-oxo-1-(3-sulphonatophenyl)-1H-pyrazol-4-yl)azo)benzenesulphonate
  • Benzenesulfonic acid, 4,5-dichloro-2-[2-[4,5-dihydro-3-methyl-5-oxo-1-(3-sulfophenyl)-1H-pyrazol-4-yl]diazenyl]-, calcium salt (1:1)
  • EINECS 265-634-4
  • Benzenesulfonic acid, 4,5-dichloro-2-(2-(4,5-dihydro-3-methyl-5-oxo-1-(3-sulfophenyl)-1H-pyrazol-4-yl)diazenyl)-, calcium salt (1:1)
  • EC 265-634-4
  • SCHEMBL5548829
  • DTXSID10886751
  • W-111251
  • 4,5-Dichloro-2-[4,5-dihydro-3-methyl-5-oxo-1-(3-sulfophenyl)-1H-pyrazol-4-ylazo]benzenesulfonic acid calcium salt
  • Benzenesulfonic acid, 4,5-dichloro-2-((4,5-dihydro-3-methyl-5-oxo-1-(3-sulfophenyl)-1H-pyrazol-4-yl)azo)-, calcium salt (1:1)

IUPAC Name: calcium;4,5-dichloro-2-[[3-methyl-5-oxo-1-(3-sulfonatophenyl)-4H-pyrazol-4-yl]diazenyl]benzenesulfonate

InChI: InChI=1S/C16H12Cl2N4O7S2.Ca/c1-8-15(20-19-13-6-11(17)12(18)7-14(13)31(27,28)29)16(23)22(21-8)9-3-2-4-10(5-9)30(24,25)26;/h2-7,15H,1H3,(H,24,25,26)(H,27,28,29);/q;+2/p-2


Canonical SMILES: CC1=NN(C(=O)C1N=NC2=CC(=C(C=C2S(=O)(=O)[O-])Cl)Cl)C3=CC(=CC=C3)S(=O)(=O)[O-].[Ca+2]

Property NameProperty Value
Molecular Weight545.4
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count10
Rotatable Bond Count3
Exact Mass543.8993873
Monoisotopic Mass543.8993873
Topological Polar Surface Area189 Ų
Heavy Atom Count32
Formal Charge0
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count1
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently-Bonded Unit Count2
Compound Is CanonicalizedYes