Appearance and properties: Colorless transparent liquid, has easy movable, extremely easy volatile aromatic smell.
Melting point: - 94.6
Boiling point: Five
The relative density (water = 1): 0.80
Relative steam density (air = 1): 2.00
Saturated steam pressure (kPa): 53.32 (pooled )
Burning hot (mol): 1788.7 kJ /
The critical temperature: 235.5
Critical pressure (MPa): 4.72
Xinchun/water distribution coefficient on the numerical: - 0.24
Flash point: - 20
Ignites temperature: 465
Explosion limit % (V/V): 2.5
Explosion limit % (V/V): 13.0
Solubility: With water, immiscible mixed soluble in ethanol, ethyl ether, chloroform, oils, hydrocarbon etc many organic solvent.

Item	Standard	Result
Content	99.5%min	99.8%
Boiling point	56± 1	56
Nonvolatile Residue	0.001%max	0.0007%
Water	0.30%max	0.14%
Acidity	0.05%max	0.02%
Moscibility with water	Pass	Pass
Alkalinity	0.05%max	0.03%
Aldehydes	0.002%max	0.001%
Methanol	0.05%max	0.01%
Ethyl	0.05%max	0.01%