Colorless clarification liquid. It has a burning smell. Easy to flow. It is very easy to absorb water from the air, and can dissolve with water and a variety of organic solvents such as chloroform and ether. The azeotropic mixture can be formed with water (water content 4.43%), and the azeotropic point is 78.15. Relative density (d204) 0.789. The melting point is -114.1 C. The boiling point is 78.5 degrees centigrade. The refractive index (n20D) 1.361. When the cup is closed, the flash point (heated in the specified structure vessel) is flammable, and the combustible gas is mixed with the air near the liquid level. When it reaches a certain concentration, the temperature that can be ignited by Mars is 13 degrees. Flammable. The vapour and the air can form an explosive mixture of 3.5% to 18% (volume).