Pigment Yellow 191

Molecular structure formula:  

Fastness Properties of Pigment Yellow 191:

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 191:

The shade of Pigment Yellow 191 is similar to CI Pigment Yellow 83, with low color power, but excellent heat resistance. In high-density polyethylene (HDPE, 1/3 standard depth), it has a heat resistance of 300°C, no dimensional deformation, and has good heat resistance. Light fastness (level 7-8); excellent migration resistance in plastic PVC; temperature resistance up to 330°C in polycarbonate, and resistance to organic solvents. It is mainly used for coloring traffic paint in the United States.

Pigment Yellow 191 is an economical red-shade yellow pigment with excellent heat stability and resistance properties. It is an ideal replacement for diarylide and lead chromate pigments.

Synonyms

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

InChI: InChI=1S/C17H15ClN4O7S2.Ca/c1-9-6-15(31(27,28)29)14(8-13(9)18)19-20-16-10(2)21-22(17(16)23)11-4-3-5-12(7-11)30(24,25)26;/h3-8,16H,1-2H3,(H,24,25,26)(H,27,28,29);/q;+2/p-2

InChIKey: IAOFMMGWUKSXJG-UHFFFAOYSA-L

Canonical SMILES: CC1=CC(=C(C=C1Cl)N=NC2C(=NN(C2=O)C3=CC(=CC=C3)S(=O)(=O)[O-])C)S(=O)(=O)[O-].[Ca+2]