2,2′-Benzidinedisulfonic Acid, CAS Number 117-61-3, Molecular Weight F.W. 344.36, Chemical Formula C12H12N2O6S2, Chemical Container Material Clear Glass, Chemical Container Type Bottle, Chemical Grade Reagent, Chemical Container Size 25 g, Chemical Family Type Analytical Reagents, Shelf Life 24 mo, Shipping Restrictions UN2811, Toxic Solid, Organic, n.o.s., 6.1, PG III