factory sale good price TrisTrometamolCAS NO.77-86-1 M.F:C4H11NO3 MW:121.14 Appearance:white crystalline powderPurity:>99%Used for:pharmaceutical intermediateAppearanceWhite crystalline powderAssay,%≥99.5MP/°C168-171Solubility(40% aq.)Clear, colorless solutionHeavy Metals, ppm≤5Water Content,%≤0.2PH value(5% aq.)10.0-11.5Iron ion,ppm≤1Sulfate,ppm≤10Chloride,ppm≤3Ultraviolet absorbance(40% aq.)≤0. ...