Density 1.3 ± 0.1g /cm3 Boiling point 227.6 ±0.0 °C at 760 mmHg Melting point 18 ºC Molecular formula C3H6O3 Molecular weight 90.078 Flash point 109.9 ±16.3 °C Exact mass 90.031693 PSA 57.53000 LogP minus 0.70 Appearance Colorless to yellow liquid Vapor pressure 0.0 ±1.0 mmHg at 25 °C Refractive index 1.451 Storage condition 1.20kg glass bottles are packed in wooden cases or sealed in plastic drums. Store in a clean and dry place. 2. Pharmaceutical small package of 500g, reagent bottle. Edible lactic acid is packed in plastic drums with a net weight of 25kg per barrel. Keep it sealed. Storage and transportation in accordance with general chemical regulations. stability 1. Chemical properties: Lactic acid has hydroxyl and carbonyl groups, and when heated, it generates linear polyester like lactide. The initial esterification product is lactoyl lactic acid, and polylactic acid is formed with increasing concentration. Most of them form linear polymers, and some of them form lactide. Lactic acid is decomposed into acetaldehyde, carbon monoxide and water. A polymer of lactic acid that is decomposed into acetaldehyde and carbon monoxide in the presence of a catalyst. However, acrylates and acetic acids are produced by the dry distillation of lactate diesters. Lactic acid has the properties of general organic acids, and its salts are soluble in water. It can form esters with most alcohols. To inhibit the formation of lactic acid polymers, excess alcohol can be used. The hydroxyl group in lactic acid molecules can also react with organic acids, anhydrides, and acyl chloride to form esters. When heated with dilute sulfuric acid, it breaks down into formic acid and acetaldehyde. 2. Pure products are non-toxic. Its salts are non-toxic as long as they are not heavy metals. Oral LD503730mg/kg for rats. 3. It exists in tobacco leaves and smoke. 4. Naturally found in cooked beef, cocoa, and wheat breads. 5. In addition, it also exists in muscles, especially after intense muscle activity, the content of lactic acid increases, so the feeling of muscle swelling. Water solubility: completely miscible; Soluble in: alcohol; Insoluble: Chloroform Molecular structure 1, molar refractive index: 19.00 2, molar volume (cm3/mol) : 70.5 3. Isotropic specific volume (90.2K) : 187.4 4, surface tension (dyne/cm) : 49.7 5, dielectric constant (F/m) : 6. Dipole distance (D) : 7. Polarizability (10-24cm3) : 7.53