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

CAS NO.：6711-18-8
Empirical Formula: C25H19N2NaO8S2
Molecular Weight: 562.54

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

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

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

New Products

2-(2-Chlorophenyl)glycine Propiolic Acid 1-(3-Hydroxy-4-methoxyphenyl)-2-nitroethene (±)-amino(2-fluorophenyl)acetic acid trans-3-Benzyloxy-4-methoxy-beta-nitrostyrene 1-Pentadecanol 2,4-Dihydroxybenzaldehyde Dipropyl disulfide Pyrrolo[1,2-a]pyrimidine-6-carboxylic acid, 4,6,7,8-tetrahydro-4-oxo-, sodium salt (1:1), (6S) Obidoxime hydrochloride API 4 pentyn 1 ol N-Vinylformamide Methacrylate-PEG-Methacrylate, Mn:35000 2,4-Dihydroxyacetophenone 2-Chloro 5-Fluoro Pyridine Vasicinone 2-Chloroisonicotinic Acid Tween 80 or Polysorbate 80 2-Butyn-1-oL N-(4-Cyano-3-(trifluoromethyl)phenyl)-2-methyloxirane-2-carboxamide N-(4-fluoro-2-methoxy-5-nitrophenyl)-4-(1-methyl-1H-indol-3-yl)pyrimidin-2-amine Pirtobrutinib intd. 2-Pentyn-1-oL 4-Nitrobenzotrifluoride

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