Acid Blue 9, Blue #1005

Water-soluble dye for versatile industrial and cosmetic applications.
SKU: ACIDBLUE9
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ACIDBLUE9 Acid Blue 9


Acid Blue 9 is a water-soluble blue dye widely recognized for its vivid coloration and extensive use across various industries. This industrial-grade dye is ideal for applications such as cleaning products, soaps, detergents, and textiles, including cellulosic materials, paper, wood, silk, nylon fibers, wool, and leather. It is also employed in biological staining, semi-permanent hair dyes, and color-depositing shampoos and conditioners.

The dye is highly stable within a pH range of 3 to 12, providing flexibility in formulation. However, note that under extremely acidic (pH < 3) or highly alkaline (pH > 12) conditions, the dye may shift to green or pink hues, respectively. Its optimal usage rate ranges from 0.0001% to 1.0% by weight, ensuring cost efficiency.

This product is available as a dark blue powder with excellent solubility in water, delivering a vibrant blue shade in solution. Its high purity is confirmed by Color Index #42090 and CAS# 3844-45-9 and 7647-14-5.


Key Features

  • Water-soluble industrial-grade blue dye.
  • Applicable for cleaning products, soaps, and detergents.
  • Widely used in textiles, leather, and wood dyeing.
  • Stability across a pH range of 3 to 12.
  • Ideal for haircare and biological staining applications.
  • Cost-effective usage at 0.0001% to 1.0% by weight.

Product Specifications

Appearance Dark blue powder
Shade (in solution) Blue
Solubility Soluble in water
pH Stability Stable within pH 3-12
Usage Rate 0.0001% – 1.0% by weight
Color Index # 42090
CAS # 3844-45-9, 7647-14-5


Perfect for industrial manufacturers, textile dyers, haircare formulators, researchers, and artisans.
  • Availability: In Stock
  • Model: ACIDBLUE9
  • Brand: Mini-Science