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HomeProduct name listDirect Blue 82

Direct Blue 82

  • Molecular Weight: 0

What is Direct Blue 82?

Preparation

2-Aminobenzene-1,4-disulfonic acid diazo, and 8-Aminonaphthalene-2-sulfonic acid coupling, again diazo, and Naphthalen-1-amine coupling, again diazo, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling.

Properties and Applications

blue. For blue is soluble in water, soluble in ethanol, insoluble in other organic solvents. The strong sulfuric acid for violet black, diluted for purple. The dye water solution is blue, with strong hydrochloric acid have dark violet blue precipitation; Add thick sodium hydroxide solution have red light purple precipitation.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
AATCC 4 4-5 5 1-2 1-2

Safety information for Direct Blue 82

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