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10-Methyl-3-[3-(sodiosulfooxy)-1H-indol-2-yl]-11H-benzo[a]carbazol-4-ol (sulfuric acid sodium) salt

CAS No.
6711-18-8
Chemical Name:
10-Methyl-3-[3-(sodiosulfooxy)-1H-indol-2-yl]-11H-benzo[a]carbazol-4-ol (sulfuric acid sodium) salt
Synonyms
C.I.73831;Solubilised Vat Black 2;C.I.Solubilised Vat Black 2;C.I.Solubilised Vat Black 2 :C.I.73831;10-Methyl-3-[3-(sodiosulfooxy)-1H-indol-2-yl]-11H-benzo[a]carbazol-4-ol (sulfuric acid sodium) salt
CBNumber:
CB72381395
Molecular Formula:
C25H19N2NaO8S2
Molecular Weight:
562.54
MDL Number:
MOL File:
6711-18-8.mol

10-Methyl-3-[3-(sodiosulfooxy)-1H-indol-2-yl]-11H-benzo[a]carbazol-4-ol (sulfuric acid sodium) salt Chemical Properties,Uses,Production

Preparation

(a) in the presence of Pyridine , with Chlorosulfonic acid treatment ?C.I. Vat Black 2 leuco; (b) in the Pyridine with metal (such as copper, iron, zinc, etc) and Sulfur trioxide source (such as Sulfur trioxide, Chlorosulfonic acid or Methyl chlorosulfonate, etc.) processing ?C.I. Vat Black 2. The above two kinds of situation after alkaline, filter out insolubles, remove Pyridine and salting out.

Properties and Applications

blue light grey to blue black. Light gray powder. Soluble in water. Can be used for cotton fabric dyeing, affinity is low, add salt may help dye. Can also be used to direct, resist and discharge printing, discharge base color with light color effect is good.

Standard Ironing Fastness Chlorine bleach Light Fastness Mercerized Oxygen bleach Soaping
Fading Stain
ISO 4 4 4-5 3 3

10-Methyl-3-[3-(sodiosulfooxy)-1H-indol-2-yl]-11H-benzo[a]carbazol-4-ol (sulfuric acid sodium) salt Preparation Products And Raw materials

Raw materials

Preparation Products

10-Methyl-3-[3-(sodiosulfooxy)-1H-indol-2-yl]-11H-benzo[a]carbazol-4-ol (sulfuric acid sodium) salt C.I.73831 C.I.Solubilised Vat Black 2 C.I.Solubilised Vat Black 2 :C.I.73831 Solubilised Vat Black 2 6711-18-8