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8日星期四
is an organic calcium lactate, the second generation of calcium
The advantage is easy to dissolve, the disadvantage is the low calcium content. Such formulations are: calcium lactate, calcium 13%; calcium Ethyl lactate , calcium 9 percent, lower levels after tableted to reach 1000 mg calcium per day for adults, need to take too many tablets, it is people difficult to accept.
L calcium lactate (third generation) is a white powder, odorless, tasteless, soluble in water and good solubility of calcium, at 20 ℃ solubility greater than 7%, 50 ℃ Solubility greater than 20%. Compared with the solubility of various calcium, 25 ℃ when the various calcium solubility: L-lactate 1345; DL-lactate 702; calcium carbonate 0.56; gluconate 670; calcium citrate 20; activity of calcium (calcium hydroxide) 65; calcium ferrous lactate 224. Visible L-lactate are dissolved calcium is the largest. This projection, one liter solution of soluble 9000-12000 mg of calcium, the recommended daily intake of calcium is 10 times, showing its high solubility.
L calcium lactate and calcium lactate compared to the DL, L lactate victory.
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