for spectrophotometric det. of nitrate and perchlorate, ≥97.0% Synonym(s): 1,4-Diphenyl-3-phenylamino-1,2,4-triazolium hydroxide inner salt; 3,5,6-Triphenyl-2,3,5,6-tetraazabicyclo[2.1.1]hex-1-ene; 4,5-Dihydro-2,4-diphenyl-5-(phenylimino)-1 H -1,2,4-triazolium hydroxide inner salt...