PROFESSIONAL PIGMENT MANUFACTURER
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Brand
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Fineland Chem
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Color Index
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Pigment Yellow 191
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Color Index No
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18795
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CAS No
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129423-54-7
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EC No
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403-530-4
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Chemical Group
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Azo Lake |
| Chemical Formula | C17H13CaClN4O7S2 |
Pigment Yellow 191 (PY191) with heat resistance up to 300 °C in HDPE and 330 °C in polycarbonate, along with lightfastness of grade 7-8 and excellent migration resistance in PVC, Pigment Yellow 191 is a premium red-shade yellow pigment for high-end plastic applications.
PY191 – DuraPlast®HGR-1 ⬇️TDS
This is a greenish-yellow pigment with high color strength, designed for plastic applications, providing strong tinting power and stable processing performance.
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Test Item
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Specification
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Density (g/cm3 )
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1.7-1.8
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Specific Surface Area(m2/g)
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10-30
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Oil Absorption(g/100g)
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30-60
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PH Value
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5.0-7.5
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Bulk Density (lb/gal)
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3-5
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Total impurities(ppm)≤
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600
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| Heat Resistance (℃) | 300 | Alkali Resistance (1-5) | 5 |
| Light Resistance (Full Shade, 1-8) | 7 | Migration Resistance(1-5) | 5 |
| Light (Reduced tinting, 1-8) | 6 | Ethyl Acetate (1-5) | 4 |
| Weather Resistance (1-5) | 4 | Ethanol (1-5) | 4 |
| Acid Resistance (1-5) | 5 | MEK (1-5) | 4 |
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Plastic and Masterbatch: Browse a comprehensive selection of plastic pigments designed for PE, PVC, EVA, rubber, and a variety of engineering plastics. More Details
Special Use: Find specialized pigments offering unique effects and functionalities for textiles, resins, glazes, metallic finishes, fluorescence, and anti-corrosion needs. More Details
Printing Ink: Discover high-performance ink pigments for various printing technologies including water-based, solvent-based, offset, inkjet, UV curing, and decorative applications. More Details
Paint and Coating: Explore a wide range of coating pigments tailored for paints, oils, automotive finishes, industrial applications, concrete, cement, and ceramics. More Details
Plastic and Masterbatch: Browse a comprehensive selection of plastic pigments designed for PE, PVC, EVA, rubber, and a variety of engineering plastics. More Details
Special Use: Find specialized pigments offering unique effects and functionalities for textiles, resins, glazes, metallic finishes, fluorescence, and anti-corrosion needs. More Details
Excellent Heat Resistance
Pigment Yellow 191 demonstrates outstanding thermal stability, maintaining color integrity without deformation at 300 °C in HDPE and up to 330 °C in polycarbonate.
Superior Lightfastness
With a lightfastness grade of 7–8, it offers long-lasting color durability under UV exposure and outdoor conditions.
Outstanding Migration Resistance
In plasticized PVC, PY191 shows excellent anti-migration properties, ensuring stable color and appearance during long-term use.
C.I. Pigment Yellow 191 (C.I. 18795)
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Benzenesulfonic acid, 4-chloro-2-[[4,5-dihydro-3-methyl-5-oxo-1-(3-sulfophenyl)-1H-pyrazol-4-yl]azo]-5-methyl-, calcium salt (1:1)
CAS No.: 129423-54-7
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