sodium p-nitroxide is orange or light yellow crystal. Soluble in water and most organic solvents. Heating loses water. Used in the manufacture of p-aminophenol, pesticides, etc. and medical paracetamol; Intermediate of developer mitol and dye. Anhydrous substances can be used as organic reagents. It is prepared by the reaction of p-nitrochlorobenzene and sodium hydroxide. It needs closed operation and local ventilation. Prevent dust from being released into the air of the workshop. Operators must be specially trained and strictly abide by the operating procedures. It is recommended that the operator wear a self-priming filter dust mask, chemical safety glasses, anti-gas infiltration overalls and rubber gloves. Stay away from kindling and heat sources, and smoking is strictly prohibited in the workplace. Use explosion-proof ventilation system and equipment.