Acid Fast Brown R.
Acid Brown 2
CAS: 3626-41-3
Molecular Formula: C23H17N4NaO7S
Acid Fast Brown R. - Names and Identifiers
| Name | Acid Brown 2 |
| Synonyms | Acid Brown 2 Fast Brown R C.I.Acid Brown 2 C.I. Acid Brown 2 C.I.Acid Brown 14 Weak Acid Brown R Acid Fast Brown R. Acid brown 2 (C.I. 17605) sodium 4-hydroxy-3-[(2-methoxy-5-nitrophenyl)azo]-6-(phenylamino)naphthalene-2-sulphonate Sodium 4-hydroxy-3-((2-methoxy-5-nitrophenyl)azo)-6-(phenylamino)naphthalene-2-sulphonate 2-Naphthalenesulfonic acid, 4-hydroxy-3-[(2-methoxy-5-nitrophenyl)azo]-6-(phenylamino), monosodium salt sodium (3Z)-3-[2-(2-methoxy-5-nitrophenyl)hydrazinylidene]-4-oxo-6-(phenylamino)-3,4-dihydronaphthalene-2-sulfonate |
| CAS | 3626-41-3 |
| EINECS | 222-840-9 |
| InChI | InChI=1/C23H18N4O7S.Na/c1-34-20-10-9-17(27(29)30)13-19(20)25-26-22-21(35(31,32)33)11-14-7-8-16(12-18(14)23(22)28)24-15-5-3-2-4-6-15;/h2-13,24-25H,1H3,(H,31,32,33);/q;+1/p-1/b26-22+ |
Acid Fast Brown R. - Physico-chemical Properties
| Molecular Formula | C23H17N4NaO7S |
| Molar Mass | 516.45845 |
| Physical and Chemical Properties | Dark brown powder. Slightly soluble in water, the aqueous solution is blue red. The addition of hydrochloric acid resulted in a dark brown precipitate; The addition of sodium hydroxide resulted in a dark red-brown precipitate. Soluble in ethanol, red-brown, insoluble in other organic solvents. In concentrated sulfuric acid red light purple, diluted olive brown; In concentrated nitric acid Brown, quickly turned into yellow light brown. |
Acid Fast Brown R. - Reference Information
| use | acid brown k is used for dyeing and printing wool fabrics and silk. Used for dyeing wool and nylon fabrics |
| Production method | Using 2-methoxy-5-nitroaniline (big red group RC) and N-phenylγ acid as raw materials, first The big red group RC is diazotized, and then coupled with N-phenylγ acid to obtain the product. The finished product is salted out, filtered, dried and crushed.. |
Last Update：2024-04-09 02:00:05
