METHYL RED

(_o_)HO2CC6H>4s>NH2 + HNO2 + HCl-->(_ o_)HO2CC6H4N2Cl + H2O

(_o_) HO2CC6H4N2Cl + C6H5N(CH3)2-->(_ o_)HO2CC6H4N = NC6H4N(CH3)2 + HCl

Prepared by H. T. CLARKE and W. R. KIRNER. Checked by ROGER ADAMS

and J. B. DAVIS.