Malachite green 4, certified

Used as a bacteria stain and a counterstain for botanical material.

(Malachite Green Oxalate; Diamond Green B; BX or P Extra; Light Green N, Solid Green O; Victoria Green B or WB) 

2(C₂₃H₂₅N₂)^.2(C₂H₂O₄)^.C₂O₄   F.W. 927.03   CAS #2437-29-8 

Solubility: 10.0% Water; 8.5% Alcohol; 5.5% Cellosolve; 7.0% Glycol; 0.0% Xylene.