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|Item||Specification ( USP 30)|
|Appearance||White color crystalline fuzzy type|
|State of Solution||Clear and Colourless|
|Chloride (CL)||0.05% Max.|
|Heavy Metals( PB)||0.0015% Max.|
|Arsenic(As2O3) (ppm)||1.5 Max.|
|Loss on Drying||0.20% Max|
|Residue on Ignition||0.40% Max.|
|Chromatographic Purity||NMT 2.0% of total impurities, NMT 0.5% of any individual impurities|
|Pharmaceutical grade L-leucine is white crystalline or crystalline powder, is a non-polar amino acids, taste bitter, soluble in water, 20 ℃, 25 ℃, respectively, the solubility of 23. 7g / L and 24. 26g / L, acetic acid (10.7g / L), dilute hydrochloric acid, alkali solution and carbonate solution, slightly soluble in alcohol (0. 72g / L), insoluble in ether, heated to 145 ^ r 148 ℃ sublimation, 293-295 0C decomposition , The specific gravity is 1. 29 (180C), the specific rotation [a] D20 is +14.5 ^ - + 16.0 (6mo1 / L Hcl, C = 1), the isoelectric point 5.98.|
Pharmaceutical grade L-leucine can be formulated amino acid infusion and integrated amino acid preparations, hypoglycemic agents, plant growth promoters.