Mordant Black 74

CAS No.
6227-06-1
Chemical Name:
Mordant Black 74
Synonyms
Mordant Black 74;C.I.Mordant Black 74:C.I.27740
CBNumber:
CB39703464
Molecular Formula:
C30H22N5NaO11S3
Molecular Weight:
747.7
MDL Number:
MOL File:
6227-06-1.mol

Mordant Black 74 Chemical Properties,Uses,Production

Preparation

8-Amino-4-hydroxynaphthalene-2-sulfonic acid diazotization, and 8-Aminonaphthalene-2-sulfonic acid coupling, product to diazotization, in alkaline condition and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling.

Properties and Applications

blue black (dichromate treatment). Soluble in water for purple black, not soluble in ethanol. In concentrated sulfuric acid to green light blue, dilution after red light blue. Dye aqueous solution to join concentrated hydrochloric acid have red light blue precipitation; Join concentrated sodium hydroxide solution for red light blue, precipitation.

Standard Ironing Fastness Light Fastness Fulling Persperation Fastness Soaping Water
Alkali Acid
ISO 4 6-7 4-5 5 4-5 5

Mordant Black 74 Preparation Products And Raw materials

Mordant Black 74 C.I.Mordant Black 74:C.I.27740 6227-06-1