TRIS (hydroxymethyl) aminomethane

Specifications: Purity 99.9~101.0% Solubility (0.1M, Water) Clear APHP Color,20% Aqueous solution <,10# Melting point 168.5~171.5 pH-value(5%, water) 10.0~11.5 In water insoluble <,0.005% Abs.@280nm, 10%, 1cm, water <,0.03 Abs.@260nm, 10%, 1cm, water <,0.06 Loss on drying (105°,C,3h) <,0.3% Residue after Ignition <,0.1% Heavy Metals <,0.0005% Chloride (Cl) <,0.0002% Sulfate (SO4) <,0.0005% As (Arsenic) <,0.0003% Ca (Calcium) , <,0.0005% Cu (Copper) <,0.0005% Fe (Iron) <,0.0001% Mg (Magnesium) <,0.0005% Mn (Manganese) <,0.0005% Pb (Lead) <,0.0002% Zn (Zinc) <,0.0005% Appearance White crystalline powder Store dry at room temperature. (18-25°C) CAS 77-86-1