5,5'-Dibromo-4,4'-dichloro-2,2'-bi[1H-indole]-3,3'-diol bis(sulfuric acid sodium) salt

5,5'-Dibromo-4,4'-dichloro-2,2'-bi[1H-indole]-3,3'-diol bis(sulfuric acid sodium) salt Chemische Eigenschaften,Einsatz,Produktion Methoden

• synthetische

  (a) in the presence of Pyridine , with Chlorosulfonic acid treatment C.I. Vat Blue 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 Blue 2. The above two kinds of situation after alkaline, filter out insolubles, remove Pyridine and salting out.

• Properties and Applications

  green light blue. Soluble in water
  

  Standard	Ironing Fastness	Chlorine bleach	Light Fastness	Mercerized	Oxygen bleach	Soaping
  						Fading	Stain
  ISO	4-5	3	3-4	3	2-3

5,5'-Dibromo-4,4'-dichloro-2,2'-bi[1H-indole]-3,3'-diol bis(sulfuric acid sodium) salt Upstream-Materialien And Downstream Produkte

6537-70-8, 5,5'-Dibromo-4,4'-dichloro-2,2'-bi[1H-indole]-3,3'-diol bis(sulfuric acid sodium) salt Verwandte Suche: