METHOD OF REUSING 10-CHLORO-5,10-DIHYDROPENARSAZINE-CONTAINING COMPOSITION OF ORGANOARSENIC SUBSTANCES FROM STATE MORTUARY Russian patent published in 2001 - IPC

FIELD: poison disposal. SUBSTANCE: 10-chloro-5,10-dihydropenarsazine (adamsite)-containing composition is treated with aqueous solution of ammonia, after which major part of composition consisting of adamsite ant its nearest analogue 10,10'- oxy-bis-5,10-dihydropenarsazine forms single mass of 10,10'-oxy-bis-5,10- dihydropenarsazine. The latter is further hydrolyzed by water vapor in autoclave at molar ratio of 10,10'-oxy-bis-5,10-dihydropenarsazine to water 1:5 at 300-400 C during 3 h. Resultant arsenic oxide precipitate is filtered off and washed with solvent. Solvent is distilled away from filtrate and remainder is subjected to vacuum distillation to give diphenylamine. EFFECT: enlarged resource for valuable commercial products. 5 cl