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 is a "platform products"
Polylactic acid is a "platform product" project, boarded the platform, will be able to develop new environmentally friendly packaging materials, fiber materials, plastic products, medical materials and downstream industries such as automotive interior materials, so as to promote bio-industry and light industry, textile, automobile and other inter-industry integration. In May this year, the province approved the COFCO Biochemical Energy (elm) 10,000 tons of polylactic acid project, which has started construction of civil works, equipment reservation has been fully carried out, the second half of next year is expected to be completed and commissioned. COFCO in full swing to promote the project Calcium lactate while another bio-chemical industry in our province leading enterprises Dacheng Group also launched a potassium lactate project preparatory work.
Innovation and industrial development, promote the optimization and upgrading of industrial structure, is the province to speed up transformation and upgrading of the industrial economy an important mission. It is understood that, in order to further accelerate the polylactic acid and other bio-industry development, the province will be gradually introduced planning, product standards and other policy measures to form a complete policy support system, such as polylactic acid strongly promote rapid and healthy development of the biotechnology industry.
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