Certifications: ISO 9001:2015

Acid Yellow 40

Acid Dyes

CI Number: 18950

Chemical Class: Azo Dye (Pyrazolone)

Form: Powder

Shade

Acid Yellow 40 is an acid dye from the pyrazolone class, known for its bright, clean, greenish-yellow colour. It is used for dyeing natural protein fibres and for many industrial colouring applications. With its excellent water solubility and good levelling properties, it is easy to work with and produces even, consistent shades. It is known for fashion textiles, leather goods, and specialty papers where a vibrant, eye-catching yellow is desired.

Applications
  • Wool & Silk Dyeing: Provides bright greenish-yellow shades for apparel, yarn, and felt.
  • Nylon Dyeing: Suitable for colouring polyamide fibres.
  • Leather Finishing: Offers a vibrant base colour for leather goods.

Key Benefits

  • Bright, clean greenish-yellow hue.
  • Good solubility in water.
  • Excellent levelling properties for uniform dyeing.
  • Good colour yield and tinctorial strength.
  • Economical and versatile choice.

Technical Highlights

  • Solubility: Good in water.
  • Application: Applied in an acidic dye bath.
  • Appearance: Greenish-yellow powder.
  • Ionic Nature: Anionic.

Packaging & Availability

  • Supplied in a standardized powder form.
  • Standard Packing: In 25 Kgs HDPE Bags or Fiber drum with liner.
  • Customized packaging is available upon request.