Direct Fast Pink BK

Name	Direct Red 75
Synonyms	CI 25380 C.I. 25380 CI NO 25380 Direct Red 75 Direct Fast Pink BK C.I. Direct Red 75 (VAN) Vital New Red (C.I. 25380) DIRECT RED 75 (C.I. 25380) SIRIUS ROSE BB, FOR MICROSCOPY Aizen Primula Pink 2BLH special C.I. Direct Red 75, tetrasodium salt (8CI) tetrasodium 5,5'-[carbonylbis[imino(2-sulphonato-4,1-phenylene)azo]]bis(6-amino-4-hydroxynaphthalene-2-sulphonate) (6E)-6-imino-5-[2-(4-{[(4-{2-[(2E)-2-imino-8-oxo-6-sulfo-2,8-dihydronaphthalen-1-yl]hydrazino}-2-sulfophenyl)carbamoyl]amino}-3-sulfophenyl)hydrazino]-4-oxo-4,6-dihydronaphthalene-2-sulfonic acid (6E)-6-imino-5-[2-(4-{[(4-{2-[(2E)-2-imino-8-oxo-6-sulfo-2,8-dihydronaphthalen-1-yl]hydrazino}-3-sulfophenyl)carbamoyl]amino}-2-sulfophenyl)hydrazino]-4-oxo-4,6-dihydronaphthalene-2-sulfonic acid
CAS	2829-43-8
EINECS	220-593-1
InChI	InChI=1/C33H26N8O15S4/c34-21-5-1-15-9-19(57(45,46)47)13-25(42)29(15)31(21)40-38-17-3-7-23(27(11-17)59(51,52)53)36-33(44)37-24-8-4-18(12-28(24)60(54,55)56)39-41-32-22(35)6-2-16-10-20(58(48,49)50)14-26(43)30(16)32/h1-14,34-35,38-41H,(H2,36,37,44)(H,45,46,47)(H,48,49,50)(H,51,52,53)(H,54,55,56)/b34-21+,35-22+

Molecular Formula	C33H22N8Na4O15S4
Molar Mass	990.79
Density	1.9g/cm³
Appearance	Powder
Storage Condition	RT, dark
Refractive Index	1.82
MDL	MFCD00004117
Physical and Chemical Properties	Brown powder. Water-soluble, slightly soluble in ethylene glycol ether, ethanol, insoluble in other organic solvents. The aqueous solution was magenta, and the addition of concentrated hydrochloric acid resulted in a purple precipitate, and the addition of caustic soda resulted in a red precipitate. In concentrated sulfuric acid was gray blue, diluted purple; In concentrated nitric acid partially dissolved in black. Slight color change of copper and iron ions during staining.

WGK Germany

EPA chemical information	Information provided by: ofmpub.epa.gov (external link)
use	direct sun-resistant pink BK is used for dyeing and direct printing of cotton and viscose fabrics to obtain pink. It has good leveling and transfer dyeing, and the dyeing rate is average. After dyeing, the fixing agent Y is commonly used to improve the wet fastness, but the color light is slightly blue. It is also used for dyeing and printing of silk, wool and nylon fabrics, as well as high-temperature dyeing polyester-viscose blended fabrics with disperse dyes.
production method	using p-nitroaniline o-sulfonic acid and γ acid as main raw materials, p-nitroaniline o-sulfonic acid is first diazotized, coupled with γ acid, after reduction, condensed with phosgene or bis (trichloromethyl) carbonate to obtain the product, and salted out, filtered, dried and crushed to obtain the finished product..

Last Update：2024-04-09 15:16:49

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Product Name: Sirius Rose BB Visit Supplier Webpage Request for quotation
CAS: 2829-43-8
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409

Wechat: 18301782025

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Direct Fast Pink BK
N-乙基乙醇胺

Direct Fast Pink BK Request for Quotation