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 81 (PY81)
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Color Index No
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21127
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CAS No
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22094-93-5
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EC No
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224-776-0
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Chemical Group
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Mono Azo
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| Chemical Formula | C₃₆H₃₂Cl₄N₆O₄ |
Pigment Yellow 81 is an organic yellow pigment belonging to the diarylide (disazo) azo pigment family. It is widely used as an industrial colorant in coatings, inks, plastics, and textile printing systems due to its balanced color strength and durability. The pigment is typically supplied as a greenish-yellow powder and is recognized in the Color Index as C.I. Pigment Yellow 81 (CI 21127) with CAS No. 22094-93-5.
PY81 – DuraPlast®3181-1 ⬇️TDS
This is a greenish-yellow pigment with good transparency and clean shade, specially designed for plastic.
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Test Item
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Specification
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Density (g/cm3 )
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1.40-1.55
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Specific Surface Area(m2/g)
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20-30
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Oil Absorption(g/100g)
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35-45
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PH Value
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6.5-7.5
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Bulk Density (lb/gal)
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11.0-12.5
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Total impurities(ppm)
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≤600
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| Heat Resistance (℃) | 240 | 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) | 5 | Ethanol (1-5) | 5 |
| Acid Resistance (1-5) | 5 | MEK (1-5) | 4 |
Pigment Yellow 81 is used across multiple industries where stable yellow coloration is required.
• Printing Inks: Offset, flexographic, gravure, and decorative metal inks.
• Industrial Coatings: Decorative coatings, architectural paints, and general industrial coatings.
• Plastics: Polyolefins, PVC, rubber, and masterbatch formulations.
• Textile Printing: Pigment printing pastes and textile coloration systems.
• Packaging Inks: Flexible packaging and decorative packaging printing.
These applications benefit from the pigment’s good compatibility with different resin systems and processing environments.
The performance characteristics of Pigment Yellow 81 support its use in various industrial color systems.
• Color Shade: Bright greenish-yellow tone with clean color appearance.
• Lightfastness: Typically rated around 6–7 (ISO scale) depending on formulation.
• Heat Resistance: Generally suitable for plastic processing up to about 200–240 °C depending on the polymer system.
• Chemical Resistance: Good resistance to acids, alkalis, alcohols, and soaps.
• Migration Resistance: Generally stable in plastics and coatings when used within recommended concentrations.
• Dispersibility: Compatible with a wide range of binders, including solvent-based and water-based systems.
These properties allow the pigment to maintain stable coloration under typical industrial processing conditions.
Excellent Lightfastness: With a rating of 6-7, Pigment Yellow 81 offers outstanding color stability, ensuring long-lasting brightness in both coatings and inks.
Superior Heat Resistance: Can withstand temperatures up to 260°C for 5 minutes, making it suitable for high-temperature applications like PVC and polyolefins.
Strong Solvent Resistance: Demonstrates excellent durability and stability in solvent-based systems, ideal for metal decoration inks and industrial coatings.
High Opacity and Coverage: Provides strong hiding power, allowing vibrant and consistent coloring, even at low pigment concentrations.
When evaluating Pigment Yellow 81, buyers typically consider:
• Required shade tone (greenish yellow vs. neutral yellow)
• Intended exposure conditions (indoor vs. outdoor)
• Processing temperature of the plastic or coating system
• Lightfastness and weather resistance requirements
• Compatibility with resin systems or printing technologies
• Regulatory and compliance considerations for packaging or industrial use
These factors help determine whether Pigment Yellow 81 is appropriate for a particular formulation or production environment.
Pigment Yellow 81 is produced by numerous pigment manufacturers worldwide and is commonly supplied in powder form for use in coatings, plastics, inks, and textile printing. It is typically available under different trade names depending on the supplier and may be provided as standard pigment powder or customized dispersions for specific industrial applications.
● 25KG Kraft Bag, 400kg/500kg Carton Box
● Lead Time: Normally around 15 days after signed contract
Pigment Yellow 81 is an organic diarylide (disazo) azo pigment identified in the Color Index as C.I. 21127. It is widely used in coatings, inks, plastics, and textile printing.
The pigment produces a bright greenish-yellow shade, often used for vivid yellow formulations and color matching in inks and coatings.
Typical industries include printing inks, coatings, plastics, packaging, and textile printing, where stable yellow coloration is required.
Yes. Pigment Yellow 81 can be used in polyolefins, PVC, and certain elastomers, provided processing temperatures and concentration limits are properly controlled.
