Lactide is a six-membered cyclic diester formed by intermolecular esterification of two alpha-hydroxy acids. The hydroxy-OH of one hydroxyl acid condensates with the carboxy-COOh of another hydroxyl acid to remove one molecule of water to form an ester -C(O)O-, while the carboxy-COOh of this hydroxyl acid condensates with the hydroxy-OH of another hydroxyl acid to form another ester group. Therefore, crossesters can be regarded as a class of oxygen-containing heterocyclic compounds based on 2, 5-dioxane, 1, 4-dioxane. In addition to α-hydroxy acids, other hydroxy acids can also be two-molecule condensation to produce a larger ring number of crossesters, such as the molecular esterification of two molecules of γ-hydroxy butyric acid can produce ten yuan of 1, 6-dioxacyclodecane-2, 7-dione.

Appearance and properties: white crystalline solid

Density: 1.186 g/cm3

Boiling point: 285.5oC at 760 mmHg

Melting point: 92-98oC

Flash point: 150.6oC

Refractive index: 1.4475

COMPANY PROFILE

Hebei yanxi chemical co.,Itd is a professional research and development of the production of lead acetate,2-phenylethylamide enterprises.The key members of the company are established by local well-known entrepreneurs and professional engineers under the call and support of the party's"low-carbon environmental protectionsafety and stability"under the innovation in traditional production equipment and technology,the use of"high temperature cooling"and "plastic basin crystallization"technology,on the basis of reducing the cost of products to make the quality of products to the same industryWith the efforts of all the staff of the companywe have established many cooperative companies in Shan Dong,He Nan,Guang Dong and other places in recent decades. Under the close supervision of the quality inspection department of the company,we carry out production and sales in the way of "labeling",providing the most convenient and fastest service for users all over the countryCompanies in the"advance with The Timesand the city every day with the advancement of"under the guidance of the core ideasadhering to the"relying on scientific and technological innovationthe development of circular economy" of the enterprise purpose,established in the marketenhance strength,go the way of science and environmental sustainable developmentrelying on the national technology research and development center, increasing spending on research and development based on the domestic market, expand the international marketmanufacturing high quality productssincere service society,toward a modern, ecology, science and technologychemical enterprises of the world.