benzidine meaning

noun
  A base used in preparing azo dyes

[Medicine]
n : a crystalline base C₁₂H₁₂N₂ used esp. in making dyes and in a test for blood

Examples

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1. clinic and prognosis analysis on 88 cases of urinary bladder carcinoma caused by benzidine
2. benzidine yellow g
3. It is positive in the benzidine test and weakly positive in methyl red test.
4. Azo dyes derived from benzidine are carcinogens; exposure to them has classically been associated with bladder cancer.
5. Many intermediates used in dye manufacture such as ortho-toluidine, benzidine etc . were found to be carcinogenic.