Tris [77-86-1] Tris(hydroxymethyl)aminomethane Appearance White crystal Content ≥99.5% MP 168-172 Solublity (1M in water, 20) Complete , Colorless Lose (weight) on drying (110) 0.2% Chloride (Cl) 0.005% SulfateSO4 0.005% Heavy metal (Pb) 0.0005% Package 10kg25kgdrum