Acid Red 266

Name	Tracid Red 2bs
Synonyms	Red E-BM Acidred2BS Acid Red 266 Acid Red E-RM Tracid Red 2bs C.I. Acid Red 266 Concorde Acid Red 2BSA sodium 6-amino-5-[4-chloro-2-(trifluoromethyl)phenyl]azo-4-hydroxy-naphthalene-2-sulfonate sodium 6-amino-5-[[4-chloro-2-(trifluoromethyl)phenyl]azo]-4-hydroxynaphthalene-2-sulphonate sodium 6-amino-5-{(E)-[4-chloro-2-(trifluoromethyl)phenyl]diazenyl}-4-hydroxynaphthalene-2-sulfonate 2-Naphthalenesulfonic acid, 6-amino-5-4-chloro-2-(trifluoromethyl)phenylazo-4-hydroxy-, monosodium salt 6-Amino-5-[[4-chloro-2-(trifluoromethyl)phenyl]azo]-4-hydroxy-2-naphthalenesulfonic acid, monosodium salt sodium (6E)-5-{2-[4-chloro-2-(trifluoromethyl)phenyl]hydrazino}-6-imino-4-oxo-4,6-dihydronaphthalene-2-sulfonate
CAS	57741-47-6
EINECS	260-925-2
InChI	InChI=1/C17H11ClF3N3O4S.Na/c18-9-2-4-13(11(6-9)17(19,20)21)23-24-16-12(22)3-1-8-5-10(29(26,27)28)7-14(25)15(8)16;/h1-7,25H,22H2,(H,26,27,28);/q;+1/p-1/b24-23+

Molecular Formula	C17H12ClF3N3NaO4S
Molar Mass	469.79
Density	1.68[at 20℃]
Boling Point	806℃[at 101 325 Pa]
Water Solubility	248mg/L at 25℃
Vapor Presure	0Pa at 25℃
Physical and Chemical Properties	Dark brown-red powder. Slightly soluble in water. In concentrated sulfuric acid for deep red solution, diluted after precipitation. There was slight change of copper ion during staining, but no change of iron ion during staining.

LogP	0.95 at 25℃
EPA chemical information	Information provided by: ofmpub.epa.gov (external link)
use	weakly acidic red E-BM is mainly used for nylon dyeing, acrylic fiber can also be dyed by copper ion dyeing, and acetate fiber. When dyeing, the color light of copper ions changes slightly, but there is no change in iron ions. Acid red 2BS dyes belong to the fluorine-containing series of monoazo dyes. The dye is mainly used for dyeing and printing of acetate fiber, nylon and acrylic fiber.
Production method	Using 4-chloro-2-trifluoromethylaniline and gamma acid as raw materials, first 4-chloro-2-trifluoromethylaniline is diazotized, and then coupled with gamma acid to obtain the product. The finished product is salted out, filtered, dried and crushed..

Last Update：2024-04-09 19:05:09

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