4,4-Diamino stiben-2,2-disulfonic acid [ 93981-21-2 ]

mp  300 °C
Water Solubility  <0.1 g/100 mL at 23 ºC
Merck  14,595
BRN  629516
Stability: Stable. Combustible. Incompatible with iron, strong oxidizing agents.
CAS DataBase Reference 81-11-8(CAS DataBase Reference)