Traits Description: colorless liquid. Freezing point -42 ℃, boiling point 115-116 ℃, relative density 0.9780 (25 / 4 ℃), refractive index 1.5092. Flash point 20 ℃, with water, alcohol, ether, petroleum ether, miscible oils. With the formation of 3 molecules of water azeotrope, boiling point 92-93 ℃. A weak alkaline and hygroscopicity. Stench, there is spicy.