Pure lactic acid is a colorless liquid, is a colorless to pale yellow liquid. Odorless, hygroscopic. The relative density of 1.2060 (25/4 ℃). Melting point 18 ℃. Boiling point 122 ℃ (2kPa). Refractive index nD (20 ℃) ??1.4392. With water, ethanol, glycerin, insoluble in chloroform, carbon disulfide and petroleum ether. Heating under normal pressure, concentrated to 50%, part of the anhydride into milk, thus products often contain 10% -15% of the milk anhydride.
2013年8月9日星期五
polylactic acid and other bio-based materials and products
Ethyl lactate transmitted the "Provincial Development and Reform Commission to encourage the production and promote the use of polylactic acid and other bio-based materials and products guidance notice." Province, "guidance" of the introduction, will build policy, "depression", seize the industry development and market launch initiative, the first in China to form polylactic acid applications market; attract domestic and foreign buffered lactic acid and products enterprises have settled down in our province cluster development, the formation of polylactide complete industrial chain and industrial clusters; realization of corn, straw and other renewable resources, alternative strategies for oil, to promote sustainable development; promote the optimization and upgrading of industrial structure adjustment, development of features and competitive advantages of Jilin strategic emerging industries, to create internationally competitive industry demonstration base.
订阅:
博文评论 (Atom)
没有评论:
发表评论