Organic Pigments

Pigment Yellow 191

Find here high performance pigment yellow 191 at upto 70% discounted prices by leading manufacturer and suppliers of yellow pigment Origo Chem.

Pigment Yellow 191 - 1

Key Features

Stable quality and easy to disperse
High brightness and good opacity/coverage (grade dependent)
Heat resistance up to 280°C (system dependent)
Light fastness: 7 (scale 1–8)
Excellent overall durability (weather/chemical resistance)

Technical Specifications

C.I. NO.18795
CAS NO.129423-54-7
EU NO403-530-4
Molecular FormulaC17H13CIN4O7S2Ca
Chemical GroupMonoazo pyrazolone, Ca
Moisture≤1.5
Water Soluble Matter≤1.0
Electric Conductivity≤500
Fineness (80 mesh)≤5.0
pH Value6.5-7.5

Physical Data & Fastness Properties

Acid Resistance5
Alkali Resistance5
Alcohol Resistance5
Ester Resistance5
Benzene Resistance5
Soap Resistance5
Heat Resistance280
Light Fastness7

Applications

  • Automotive OEM/refinish coatings
  • Powder coatings
  • Printing inks (gravure/flexo)
  • Packaging inks
  • Paints and coatings
  • Plastics coloring

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Usage Instructions

Recommended dosage: 0.3–3.0% depending on color strength and application. For plastics/masterbatch, pre-disperse with suitable carrier resin and dispersant; for inks/coatings, mill to target fineness. Processing temperature should be controlled below 280°C (system dependent). Ensure good ventilation and use appropriate PPE. Store sealed in a cool, dry place.

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