Benzenesulfonic acid, 2-(phenylamino)-5-[[4-[(2-hydroxy-6-sulfonaphth-1-yl)azo]naphth-1-yl]azo]-, disodium salt
Acid Black 26
CAS: 6262-07-3
Molecular Formula: C32H21N5O7S2.2Na
Benzenesulfonic acid, 2-(phenylamino)-5-[[4-[(2-hydroxy-6-sulfonaphth-1-yl)azo]naphth-1-yl]azo]-, disodium salt - Names and Identifiers
| Name | Acid Black 26 |
| Synonyms | Polan Black RB Acid Black 26 Daedo Acid Black NB Folan Fast Black VL Triacid Light Black VLN. Kayanol Milling Black VLG Atul Acid Cyanine Black VL C.I. Acid Black 26, disodium salt 2-Naphthalenesulfonic acid, 6-hydroxy-5-4-4-(phenylamino)-3-sulfophenylazo-1-naphthalenylazo-, disodium salt Benzenesulfonic acid, 2-(phenylamino)-5-[[4-[(2-hydroxy-6-sulfonaphth-1-yl)azo]naphth-1-yl]azo]-, disodium salt disodium (5E)-6-oxo-5-[(4-{(E)-[4-(phenylamino)-3-sulfonatophenyl]diazenyl}naphthalen-1-yl)hydrazono]-5,6-dihydronaphthalene-2-sulfonate |
| CAS | 6262-07-3 |
| EINECS | 228-412-8 |
| InChI | InChI=1/C32H23N5O7S2.2Na/c38-30-17-10-20-18-23(45(39,40)41)12-13-24(20)32(30)37-36-28-16-15-27(25-8-4-5-9-26(25)28)35-34-22-11-14-29(31(19-22)46(42,43)44)33-21-6-2-1-3-7-21;;/h1-19,33,36H,(H,39,40,41)(H,42,43,44);;/q;2*+1/p-2/b35-34+,37-32+; |
Benzenesulfonic acid, 2-(phenylamino)-5-[[4-[(2-hydroxy-6-sulfonaphth-1-yl)azo]naphth-1-yl]azo]-, disodium salt - Physico-chemical Properties
| Molecular Formula | C32H21N5O7S2.2Na |
| Molar Mass | 697.658 |
| Density | 1.364-1.471[at 20℃] |
| Boling Point | 280℃[at 101 325 Pa] |
| Water Solubility | 67.3-92.84g/L at 20℃ |
| Vapor Presure | 0-0Pa at 25℃ |
| Physical and Chemical Properties | Blue-light black powder. Soluble in water, in water solubility (90 deg C) for 100g/L, aqueous solution is blue. Slightly soluble in ethanol and propanol. It is purple in concentrated sulfuric acid and turns blue after dilution. |
Benzenesulfonic acid, 2-(phenylamino)-5-[[4-[(2-hydroxy-6-sulfonaphth-1-yl)azo]naphth-1-yl]azo]-, disodium salt - Reference Information
| LogP | -2.5--1.984 at 20℃ |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | weak acid black VL is suitable for dyeing wool, nylon, silk and wool blended fabrics, suitable for dyeing loose wool, wool, skein, the most suitable for wool hat, black. Used for wool and other fibers in the same bath dyeing, wool is black, nylon is dark blue, silk is lighter, cellulose fiber and acetate fiber are stained. Can also be used for leather coloring. |
| production method | with 2-anilino-5-aminobenzenesulfonic acid, 1-naphthylamine and Schiff acid (2-naphthol -6-sulfonic acid) as raw materials, first 2-anilino-5-aminobenzenesulfonic acid diazotization, then coupled with 1-naphthylamine, the coupled product is then diazotized and coupled with Schiff acid to give the product. After salting out, filtration, drying, grinding to get the finished product... |
Last Update：2024-04-09 15:16:52
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