Product Name：sulphur blue
Feature：
Product Description:
sulphur blue 15#/5#/7#/13#
cas no.:1327-69-1(sulphur blue 15)
CBNumber: CB7903531
Molecular formula:
Weight: 0
MOL File: Mol file
Blue-purple powder. Insoluble in water. Soluble in sodium sulfide solution was green gray. In concentrated sulfuric acid was blue-violet, dark blue precipitate after dilution.
Use
Sulfur Blue BRN is mainly used for cotton, linen, viscose fiber, polyvinyl alcohol and fabric dyeing, dyed navy blue dye main color, bright color. Can also be dark gray with yellow dye dyes.
Production methods
O-toluidine and phenol as raw materials, phenol nitrosation first, and then o-toluidine dissolved in sulfuric acid, and condensation of the intermediate nitroso phenol 3 - methyl -4 - amino -4 '- hydroxy diphenylamine (I), then (I) with polysulfide to sulfide by oxidation, filtration, drying was finished (II).
1 part of phenol, sodium nitrite were 1.36, 0.86 copies of sulfuric acid, 4.5t water, at 12 ℃ for nitrosation, have on the sub-nitrophenol.
Take 1 4.3675 o-toluidine were dissolved in sulfuric acid, then add 1.0149 to the nitroso phenol were heated at 30 ℃, the condensation reaction of 1h, the intermediate (I).
The above intermediate (I) and 1 sodium sulfide, sulfur 2.75 cent, water heated to 110-111 ℃, holding 30h, for vulcanization. Then diluted with water, heated to 88-90 ℃, through air oxidation 14h, was the product of (the proportion of polysulfide sulfur content in different curing temperature difference, the product was different shade. Increase the percentage of sulfur content, temperature, shade more products Hongyan, which have different trade names. such as Sulfur Blue BN with glaucoma, Sulfur Blue BRN red with green, blue RN with a red light curing, etc.).
Packing:25kgs/pp bag or at buyer's option
Payment:50% tt in advance and 50% paid by lc
Delivery time:two weeks after we recieved the deposit(for 1fcl)
Supply:1000mt/month
MOQ:1mt
