Colourless liquid. There are fish xing amine odour. Relative
density of 0.***7 (*5/*5 ℃). The boiling point of **4.5 ℃. Freezing
point is *7.7 ℃. The refractive index of 1.***5 (*5 ℃). Miscibility
with water and general organic solvent. Can with vapor evaporating,
and formed azeotrope with water. Flammable, toxic.
