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12日星期一
Green calcium France
Ethyl lactate participate in the optic nerve physiological activity, is also responsible for maintaining the eye elasticity. If the "eyes of calcium" no
Enough, you will feel eyes blurred.
We know that many look at the "green" will help restore vision of our eyes. Why is green? Because Green wave length, imaging in front of the retina that allows the eye ciliary muscle relaxation, relieve eye fatigue.
"Green calcium law." Find a more than 10 square meters of grass or trees, do not squinting, concentrating Gaze 25 seconds, to identify the contours of grass or leaves; then put his left hand on the front of the eyes 30 cm, Slightly higher than the line of sight, one by one from start to finish to see the palm, watching five seconds; ferrous lactate into the distance grass or trees Leaves 25 seconds, look at palm. 10 minutes repeated 20 times, 3 times a day to do, and soon you will feel Bright eyes of God! So you do not worry about vision changes, eye protection, retaining only a waiting world Light.
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