Short Description:

Product Name: L-Leucine

CAS No:61-90-5

Molecular FormulaC6H13NO2 

Molecular Weight.131.17 


Product Detail

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Solubility Information Solubility in water: 22.4g/L (20°C). Other solubilities: 10.9g/L acetic acid, slightly soluble in alcohol, insoluble in ether
Formula Weight 131.17
Specific Rotation + 15.40
Sublimation Point 145.0 °C
Specific Rotation Condition + 15.40 (20.00°C c=4, 6N HCl)
Melting Point 286.0°C to 288.0°C
Quantity 500g
Chemical Name or Material L-Leucine

Physicochemical properties

L-leucine is a white crystalline or crystalline powder. It is a non-polar amino acid, slightly bitter in taste, soluble in water, 23.7g/l and 24.26g/l at 20 ℃ and 25 ℃, acetic acid (10.9g / L), dilute hydrochloric acid, alkali solution and carbonate solution, slightly soluble in alcohol (0.72g / L), insoluble in ether, sublimated at 145 ^ R 148 ℃, decomposed at 293-2950c, specific gravity 1.29 (180C), specific rotation [a] ]D20 is + 14.5 ^ - + 16.0 (6mo1 / L HCl, C = 1), isoelectric point is 5.98.:

Product Quality meets: Ferment grade, quality meets AJI92, USP38.
Stock status: Usually keep 7000-8000KGs in stock.
Application: Nutritional supplements. Generally used for bread, flour products. It is composed of plant growth promoter, amino acid and infusion preparation.

It can be used as perfume to improve food flavor.
Package: 25kg / barrel

It can be safely used in food.

[package]: it can be packed in kraft paper bag or paper bucket, with net content of 25kg in each bag (bucket). It can also be packed according to user's needs.
[transportation]: light loading and light unloading to prevent package damage, sun and rain, not with toxic and harmful substances. It is non dangerous goods.
[storage]: This product should be stored in a cool, dry, clean and shading environment. It is strictly forbidden to mix with toxic and harmful substances to avoid pollution.

Properties of L-Leucine

White glossy hexahedral crystal or white crystalline powder. Slightly bitter. Sublimate at 145 ~ 148 ℃. Melting point 293 ~ 295 ℃ (decomposition). In the presence of hydrocarbons, it is stable in inorganic acid aqueous solution. Each gram is dissolved in 40 ml water and about 100 ml acetic acid. It is slightly soluble in ethanol, dilute hydrochloric acid, alkaline hydroxide and carbonate solution. Insoluble in ether.


1. It is an essential amino acid. The requirement for adult men is 2.2g/d, which is necessary for normal growth of infants and normal nitrogen balance of adults. As a nutritional supplement, it is used to prepare amino acid infusion and comprehensive amino acid preparation, hypoglycemic agent and plant growth promoter. According to GB 2760-86, it can be used as perfume.

2. As amino acid infusion and comprehensive amino acid preparation. It is used for the diagnosis and treatment of idiopathic hyperglycemia in children. It is also suitable for the disorders of glucose metabolism, liver diseases with reduced bile secretion, anemia, poisoning, muscular atrophy, sequelae of poliomyelitis, neuritis and psychosis.

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