Benzidine:
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- Health Hazards: Occupational exposure is strongly associated with bladder cancer. It is also linked to cancers of the liver, kidney, and other organs. It can cause damage to DNA and chromosomes.
- Uses:
Historically used in dye manufacturing, as a rubber-compounding agent, and for clinical laboratory testing (e.g., detecting blood). Today, its use is severely restricted or banned in many countries, though small amounts may be used in research.
- Physical Properties: It is a solid with a melting point of 120 °C and a boiling point of 401 °C. It has low solubility in water and can be found in the environment as a “free” base or a salt.
- Exposure: Exposure generally occurs through inhalation or ingestion of benzidine-based dyes.
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