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9月29日星期日
stainless steel appliances with tank and piping
Heating the contaminated sodium bicarbonate injection , some decomposed into sodium carbonate , and trace metal ions and the formation of carbonate precipitation. Calcium lactate tinidazole injection turbidity is caused by the iron ions , iron ions concentration with turbidity increases. Therefore , the preparation of these products stainless steel products should be avoided contact with enamel, plastic utensils instead, but most production enterprises to improve production efficiency , all stainless steel appliances with tank and piping , in this case , should be in the dosing 0.01% buffered lactic acid salt was added as a complexing agent , can improve the clarity of the product . The quality of liquid filtration plays a pivotal role clarity , it should choose high efficiency, advanced technology, safe and reliable filter. We used filters and media from the past sand filter rods , hanging ball melting glass filter , Flatbed microemulsion membrane filter cartridge and replaced with titanium folding microemulsion membrane filter, its durability and filtering accuracy greatly improved . Previously used sand filter rods , although filter fast , easy to use, but easy to sand off , for some drug adsorption, filter the residual liquid and more .
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