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HomeProduct name listC.I. Acid Red 81

C.I. Acid Red 81

  • CAS NO.:6846-33-9
  • Empirical Formula: C23H15N2NaO5S
  • Molecular Weight: 454.43037
C.I. Acid Red 81 Structural

What is C.I. Acid Red 81?

Preparation

1-Bromo-4-(N-methylacetamido)anthraquinone?condensation into 6-Bromo-3-methyl-3H-naphtho[1,2,3-de]quinoline-2,7-dione, then with aniline condensation, again with hair smoke sulphonated sulfuric acid, and translated into sodium salt.

Properties and Applications

colourful red blue light. Soluble in alcohol. The strong sulfuric acid for blue-ray red, diluted into pink.

Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater
Fading Stain Fading Stain Fading Stain
ISO 5-6 3 3-4 3 2-3 3-4

Safety information for C.I. Acid Red 81

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