3.3′-Dimethoxybenzidine in Pakistan
3,3′-Dimethoxybenzidine (C14H16N2O2cap C sub 14 cap H sub 16 cap N sub 2 cap O sub 2𝐶14𝐻16𝑁2𝑂2, CAS 119-90-4), also known as o-dianisidine, is a colorless to violet crystalline solid primarily used as an intermediate for producing dyes, pigments, and diisocyanates.
Description
Information:
- Appearance: Colorless crystal that turns violet upon exposure to air and light.
- Solubility: Practically insoluble in water, but soluble in alcohol, benzene, ether, and chloroform.
- Uses: Primarily used as a chemical intermediate for dyes and pigments for paper, plastics, and rubber. It is also used to produce o-dianisidine diisocyanate for polyurethanes.
- Toxicity/Health Hazards: It is a known carcinogen (listed on Proposition 65). Chronic exposure in animal studies has led to tumors, gastritis, and weight loss.
- Safety Measures: Should be handled with extreme caution; NIOSH and OSHA classify it as a hazardous substance, requiring specialized protective equipment to avoid inhalation or skin contact.
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