Basic introduction
Product Name Tris(hydroxymethyl)aminoethane
CAS 77-86-1
EINECS 201-064-4
Molecular formula C4H11NO3
Appearance White crystal or powder. Melting point 171-172℃, boiling point 219-220℃ /1.3kPa, soluble in ethanol and water, slightly soluble in ethyl acetate, benzene, insoluble in ether, carbon tetrachloride, copper, aluminum corrosion effect, irritating.
Density 1,353 g/cm3
Flash point 219-220°C/10mm
Storage conditions 20-25°C
Storage conditions 2-8°C
Solubility H2O: 4 M at 20 °C, clear, colorless
Solubility H2O:4 Mat 20 °C,clear,colorless
PH 10.5-12.0(4 m in water, 25 °C)
Acidity factor (pKa)8.1(at 25℃)
Acid-base indicator color-changing ph range 7-9
Water solubility 550 g/L (25 ºC)