Pigment Yellow 191

• Post Date:

  Oct 29,2025

• Expiry Date:

  Apr 27,2026

• Detailed Description:

  Cas No. :129423-54-7

• CAS Registry Number:

  129423-54-7

• Synonyms:

  -;C.I. Pigment Yellow 191;Pigment Brilliant Yellow HGR;c.i. 18795;4-Chloro-2-[[4,5-dihydro-3-methyl-5-oxo-1-(3-sulfophenyl)-1H-pyrazol-4-yl]azo]-5-methylbenzenesulfonic acid calcium salt (1:1);PYRAZOLONE YELLOW HGR;Benzenesulfonic acid, 4-chloro-2-4,5-dihydro-3-methyl-5-oxo-1-(3-sulfophenyl)-1H-pyrazol-4-ylazo-5-methyl-, calcium salt (1:1);Pigment -- Pigment Yellow 191;4-Chloro-2-[5-hydroxy-3-methyl-1-(3-sulfophe- nyl)pyrazol-4-ylazo]-5-methylbenzene sulfonic acid, calcium salt

• Molecular Formula:

  C₁₇H₁₃CaClN₄O₇S₂

• Molecular Weight:

  524.97

• Molecular Structure:

  

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