Molecular Formula | C7H9Cl2NO |
Molar Mass | 194.06 |
Melting Point | 226 °C |
Appearance | tablet |
Physical and Chemical Properties | Needle crystal. Soluble in ethanol and ether. |
Hazard Symbols | Xn - Harmful |
Risk Codes | 22 - Harmful if swallowed |
Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
WGK Germany | 3 |
TSCA | Yes |
Hazard Class | 6.1 |
EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
Use | is mainly used as a color developing agent for dyeing and printing cotton, viscose, silk and nylon fabrics. It can also be used as an intermediate for fast pigments and other dyes. |
production method | methoxylation of 2, 5-dichloronitrobenzene with methanol and sodium hydroxide, distillation of methanol and dilution with water, separation by sedimentation was carried out, followed by reduction with sodium sulfide, distillation, and salt formation reaction with hydrochloric acid. Raw material consumption (kg/t)2, 5-dichloronitrobenzene (industrial) 1185 methanol (industrial) 337 alkali sulfide (60%) 1550 caustic soda (100%) 453 hydrochloric acid (31%) 1200 salt (industrial) 1580 activated carbon (industrial) 12 |