Description

L-proline with purity *9% 
Appearance and properties: white crystal or crystalline powder or colorless needle crystal, containing a water of crystallization. Slight odor, taste sweet. Melting point: ******0 ° C Than the curl: *4.5 ° and *6.0 °. Deliquescence, deliquescence. Solubility: the goods easily soluble in water, dissolve in ethanol, soluble in acetone and chloroform insoluble in diethyl ether or n-butyl alcohol. Storage: shading
Can be obtained from ethyl alcohol/colorless needle crystal, from the water to get rhombic, has strong sweet taste, yellow with ninhydrin test fluid hydrate reaction, but the glacial acetic acid acidification after red, reacts with ammonium thiocyanate difficult soluble salt