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HomeProduct name listDirect Green 58

Direct Green 58

What is Direct Green 58?

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, first in alkaline conditions and 4-Nitrobenzenamine diazo, in acid conditions and 4-Amino-5-hydroxynaphthalene-1,7-disulfonic acid and product of the three matches, and then coupled with phenol, finally the method with the nitro reduction.

Properties and Applications

dark green. Moderate soluble in water for blue light green, slightly soluble in alcohol. The strong sulfuric acid for violet black, diluted with light dark purple. The dye solution to join strong hydrochloric acid have dark blue light grey precipitation; Add thick sodium hydroxide solution for dark green light gray

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 3 4 3 3 3-4
AATCC 5 5 3-4 2-3 1-2

Safety information for Direct Green 58

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