Organic Pigments

Pigment Red 146

Also Known As:C.I. 1248512485Naphthol AS

Pigment Red 146 affords bluish red shade, exhibit very good solvent resistance and light fastness, primarily used for printing inks, coatings, and paints.

Pigment Red 146 - 1

Key Features

Good dispersion and processing performance
Bright shade and good color strength
Heat resistance up to 260°C (system dependent)
Light fastness: 8 (scale 1–10)
Suitable for general-purpose applications

Technical Specifications

C.I. NO.12485
CAS NO.5280-68-2
EU NO226-103-2
Molecular FormulaC23H27CIN4O6
Chemical GroupNaphthol AS
Moisture≤1.5
Water Soluble Matter≤1.5
Electric Conductivity≤500
Fineness (80 mesh)≤5.0
pH Value6.5-7.5

Physical Data & Fastness Properties

Acid Resistance6
Alkali Resistance6
Alcohol Resistance8
Ester Resistance8
Benzene Resistance9
Soap Resistance8
Heat Resistance260°C
Light Fastness8

Application Fields

This product is widely used in the following application fields, providing excellent coloring performance and durability:

  • General-purpose inks
  • Paints and coatings
  • Plastics coloring
  • Masterbatch production

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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 260°C (system dependent). Ensure good ventilation and use appropriate PPE. Store sealed in a cool, dry place.

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