• L-Leucine



CAS: 61-90-5
Molecular formula: C6H13NO2
Molecular weight: 131.17
Properties: White crystalline powder. Slightly bitter. Sublimation at 145~148℃. The melting point is 293~295℃. In the presence of hydrogen, it has stable performance in water-soluble inorganic acid.
Product application: Nutritional supplements; flavoring and flavoring agents.

Storage method: This product should be stored in a sealed, dry place away from light.

L-leucine is one of the eight essential amino acids for the human body. It belongs to the aliphatic amino acids in the twenty protein amino acids. Together with L-isoleucine and L-valine, it is called the three major branched chain amino acids. It is an enantiomer with D-leucine, and it is a white glossy hexahedral crystal or a white crystalline powder at room temperature. Odorless, slightly bitter. In the presence of hydrocarbons, the performance is stable in mineral acid aqueous solutions. Dissolve each gram in 40ml of water and about 100ml of acetic acid. Very slightly soluble in ethanol or ether, soluble in formic acid and dilute hydrochloric acid, alkaline hydroxide and carbonate solutions.

Item Standard Analysis
Appearance White powder Conforms
Color White crystal Conforms
Odor Characteristic Conforms
Mesh size 100% through 80 mesh size Conforms
General Analysis
Identification Identical to R.S. sample Conforms
Solubility(1.0g/20ml H2O) Clear Colorless Conforms
Assay 98.0-102.0% 99.26%
Loss on drying ≤5.0 3.15%
Ash(g/100g) ≤5.0 2.38%
Melting point(℃) 200℃to210℃ 203.7
Heavy metals(Pb) Not more than 10ppm <20ppm
Lead(Pb)(mg/kg) <3.0 Conforms
Arsenic(As)(mg/kg) <2.0 Conforms
Cadmium(Cd) (mg/kg) <1.0 Conforms
Total plate count ≤1000cfu/g Conforms
Yeast and Mold ≤100cfu/g Conforms
Coliforms Negative Conforms
Salmonella(/25g) Negative Conforms