Yellow crystals, irritating; soluble in water, ethanol, alkali solution; used in the synthesis of dyes, pigment intermediates, especially suitable for the preparation of nitro dyes. Hazard Class: Class 6.1 dangerous goods; toxic.
Chinese alias：邻硝基氯苯4-磺酸
English alias：4-Chloro-2-nitrobenzenesulfonic acid；2-Nitro-4-chlorobenzenesulfonic acid
Nitro dye intermediate; used in the synthesis of dyes (such as acid dyes, disperse dyes), pigments (such as yellow pigments), suitable for dyeing chemical fiber and wool, improve the water solubility and dyeing performance of dyes
| No. | Test Item | Specification |
| 1 | Appearance | White to slightly yellow crystalline powder; slight caking acceptable |
| 2 | Purity | ≥97.0% |
| 3 | Dry basis content | ≥96.5% |
| 4 | Water | ≤1.0% |
| 5 | Ash | ≤0.2% |
| 6 | pH value | 1.0–2.5 |
| 7 | Iron (Fe) | ≤0.003% |
| 8 | Heavy metals (as Pb) | ≤0.002% |
| 9 | Insoluble matter | ≤0.1% |
| 10 | Melting point | 113.0–116.0℃ |
Address: Block B, Interstellar Center, Yuhua District, Shijiazhuang City, Hebei Province
