O-nitrophenol: pale yellow acicular or prismatic crystal. The melting point is 44-45 ℃, the boiling point is 216 ℃, the flash point is 102 ℃, the relative density (40/4 ℃) is 1.2941, and the refractive index is 1.5723. Toxic. It smells of almonds.

Purpose:

1. It is used as an intermediate for organic synthesis of medicine, dyes, rubber auxiliaries, photosensitive materials, etc. It can also be used as a monochrome pH indicator. Production of sulfur dyes (such as sulfur grass green GN, etc.). Preparation of medical phenacetin, paracetamol, developer metol, pesticide organophosphorus insecticide parathion, methyl parathion, etc. It can also be used as a monochrome pH indicator.

2. It is mainly used as dye, medicine and organic synthesis intermediate. It can be used as rubber antioxidant, developer, monochrome pH indicator, photosensitive material, etc.

3. Used as organic synthesis intermediate, indicator and analytical reagent.

Capacity: 2000 tons/year, industrialized.