Characters and uses: Transparent viscous liquid,with colorless,odorless and a few sweet taste .with strong hygroscopicity, dissolved in water and ethyl alcohol and in ethyl ether slightly not be dissolved in benzene, chloroform,carbon tetrachloride,carbon disulfide.oil& fat negativey.It is widely used in war industry,drug,coating,textile,printing & dying,tobacco,foods,paper and daily chemicals etc.