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 55 (PY55)
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Color Index No
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21096
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CAS No
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6358-37-8
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EC No
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228-771-0
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Chemical Group
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Disazo
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| Chemical Formula | C₃₄H₃₀CI₂N₆O₄ |
Pigment Yellow 55 (C.I. 21090) is a synthetic organic azo yellow pigment used in coatings, printing inks, and certain plastic applications. It provides a medium to slightly greenish-yellow shade with balanced tinting strength and processing performance. Pigment Yellow 55 is typically selected for industrial coloration where consistent color tone and formulation compatibility are required under standard processing conditions.
PY55 DuraPaint® 6155 ⬇️TDS
This is a yellow organic pigment with good heat resistance (up to 180 °C), lightfastness, weather durability, and chemical resistance, suitable for industrial and decorative water- or solvent-based paint applications.
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Test Item
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Specification
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Density (g/cm3 )
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1.40-1.43
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Specific Surface Area(m2/g)
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45
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Oil Absorption(g/100g)
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40-74
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PH Value
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6.5-8.0
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Bulk Density (lb/gal)
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11.6-11.9
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Total impurities(ppm)
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≤600
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| Heat Resistance (℃) | 180 | Alkali Resistance (1-5) | 4 |
| Light Resistance (Full Shade, 1-8) | 5 | Migration Resistance(1-5) | 4 |
| Light (Reduced tinting, 1-8) | 6 | Ethyl Acetate (1-5) | 3 |
| Weather Resistance (1-5) | 3-4 | Ethanol (1-5) | 4 |
| Acid Resistance (1-5) | 4 | MEK (1-5) | 4 |
Pigment Yellow 55 is commonly used in:
Industrial and decorative coatings
Printing inks for packaging and general printing
Plastic coloration, including polyolefins and PVC
Paper and board coloration
Rubber and related industrial materials
It is generally applied in indoor or moderate exposure environments.
Color Shade:
Provides a medium yellow to slightly greenish-yellow tone suitable for general-purpose color formulations.
Tinting Strength:
Offers moderate to good tinting strength, supporting efficient color development in coatings and plastics.
Dispersibility:
Can be dispersed using conventional milling and compounding processes in common resin systems.
Heat Resistance:
Suitable for moderate processing temperatures typically encountered in standard plastics and coatings.
Lightfastness:
Demonstrates moderate light stability suitable for many indoor or controlled exposure applications.
Bright, pure yellow hue with a slightly reddish tone.
High tinting strength, providing excellent color yield with low dosage.
Adjustable gloss and opacity through surface area modification for transparent or opaque finishes.
Good lightfastness (Grade 7 at 1/3 SD), suitable for outdoor exposure.
Stable thermal resistance, maintaining color integrity under normal plastic processing temperatures.
Excellent chemical stability against acids, alkalis, and organic solvents.
Versatile use in industrial packaging inks, coatings, PVC, rubber products, and printing pastes.
Good dispersibility in various organic media, enabling smooth color development.
Controlled opacity, allowing selection between transparent and non-transparent grades.
Durable color retention, with minimal fading or migration during service life.
Weather Resistance:
Not typically recommended for prolonged outdoor exposure.
Thermal Stability:
May not be suitable for high-temperature engineering plastics.
Lightfastness:
Moderate lightfastness compared with high-performance yellow pigments.
Migration Resistance:
Performance should be evaluated in plasticized systems.
Shade Requirements:
Confirm whether a medium or slightly greenish-yellow shade meets formulation targets.
Processing Temperature:
Evaluate compatibility with the processing temperatures of plastics or coatings.
Exposure Conditions:
Consider indoor versus outdoor durability expectations.
Formulation Compatibility:
Assess suitability with specific resin or binder systems.
Regulatory Compliance:
Review applicable industry and regional regulatory standards.
| C.I. Pigment Yellow 55 | C.I. Number: 21096 | Organprin Golden Yellow GRT | Suimei Yelow DR |
| PY55 | CAS Number: 6358-31-2 | Irgalite Yellow BAF | Sumikaprint Yellow 2RN |
| Fast Yellow 2RN | Eljon Yellow XPT | Lionol Yellow 7100 | Symuler Fast Yellow RF |
| Pigment Yellow 2RN | Epsilon Yellow LB-315 | Sanyo Fast Yellow H315-A | Yellow PEC-315 |
| 6108 Pigment Yellow 2RN |
Pigment Yellow 55 is manufactured by producers specializing in azo pigment chemistry. Commercial grades may vary in particle size distribution, surface treatment, and dispersion behavior depending on the intended application and formulation system.
25KG Kraft Bag, 400kg/500kg Carton Box
Lead Time: Normally around 15 days after signed contract.
It is generally recommended for indoor or moderate exposure applications due to its balanced but moderate weather resistance.
Yes. It may be used in common plastic systems such as polyolefins and PVC, subject to processing temperature verification.
With appropriate dispersion techniques, it can be incorporated into certain water-based coating systems.
It offers moderate to good tinting strength suitable for many general industrial color formulations.
