7-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-4-hydroxy-3-(2-sulfophenyl)azo-naphthalene-2-sulfonic acid
Reactive Orange 1
CAS: 6522-74-3
Molecular Formula: C19H12Cl2N6O7S2
7-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-4-hydroxy-3-(2-sulfophenyl)azo-naphthalene-2-sulfonic acid - Names and Identifiers
7-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-4-hydroxy-3-(2-sulfophenyl)azo-naphthalene-2-sulfonic acid - Physico-chemical Properties
| Molecular Formula | C19H12Cl2N6O7S2 |
| Molar Mass | 571.37 |
| Density | 1.88g/cm3 |
| Refractive Index | 1.798 |
| Physical and Chemical Properties | Orange powder. The solubility in water (50 ℃) is 100g/L. The aqueous solution is golden yellow, the addition of 1mol/L sodium hydroxide solution is dark yellow, the warm color of sodium hydrosulfite is not changed, and the addition of sodium perborate remains unchanged. It is red sauce color in concentrated sulfuric acid and golden yellow after dilution. It is golden yellow in concentrated nitric acid and has no change after dilution. Resistance to alkaline hydrolysis, not acid hydrolysis. |
7-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-4-hydroxy-3-(2-sulfophenyl)azo-naphthalene-2-sulfonic acid - Reference Information
| introduction | active orange 1 is also called active orange X-GN, which is an azo dye. Azo dyes are the most common among synthetic dyes, accounting for about 60%-70% of synthetic dyes. They are widely used in textile, leather, food and printing industries. |
| chemical properties | orange powder. The solubility in water (50 ℃) is 100g/L. The aqueous solution is golden yellow, the addition of 1mol/L sodium hydroxide solution is dark yellow, the warm color of sodium hydrosulfite is not changed, and the addition of sodium perborate remains unchanged. It is red sauce color in concentrated sulfuric acid and golden yellow after dilution. It is golden yellow in concentrated nitric acid and has no change after dilution. Resistance to alkaline hydrolysis, not acid hydrolysis. |
| use | active orange X-GN is mainly used for dyeing cotton and viscose twisted yarns and fabrics, and is generally not used for printing. High affinity, easy to produce color difference. It can be used to dye wool, silk and nylon. For example, silk and squeezed silk are dyed with active orange X-GN and brilliant red X-B. Viscose fiber and silk are interwoven and jetted with active orange X-GN and red-purple X-2R. It is also used for direct printing of silk and dyeing polyester/cotton blended fabrics by two-bath method. used for dyeing cotton, hemp, silk, viscose and other fabrics |
| production method | using aniline -2, 5-bissulfonic acid, j acid and cyanuric chloride as raw materials, first condensate j acid with cyanuric acid, and then diazoate aniline -2, 5-bissulfonic acid, the product is then coupled with the aforementioned condensation product. The finished product is salted out, filtered and dried. Condensation. Diazotization. Coupling. 0.2625kmol cyanuric chloride and 0.25kmol J acid are condensed in hydrochloric acid medium at 0-5 ℃ to obtain (I). Diazotization of 0.25kmol aniline -2, 5-bissulfonic acid and coupling with (I), salting out, filtering, and drying to obtain the dye. The latest research shows that: condensation reaction, pH = 2.5-3.5,6-9 ℃, free J acid content ≤ 1% at the end of the reaction; Diazotization reaction, aniline -2, 5-bissulfonic acid: HCl:NaNO2 = 1:2.6:1.04 (mass ratio),4-8 ℃; Coupling reaction, 7-10 ℃,pH = 4-6 (4.5-4.9 is the best) is the better reaction condition. |
| EPA chemical information | information provided by: ofmpub.epa.gov (external link) |
Last Update：2024-04-10 22:29:15
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