Alpha Lipoic Acid

ITEM

SPECIFICATION

Appearance

Slightly yellow crystal powder

Solubility(In NaOH)

Clear and pale yellow

Melting Point

60~62℃

Specific rotation

-1.0°to +1.0°

Loss on drying

≤0.2%

Residue on Ignition

≤0.1%

Loose density

/

Particle size

100% pass 40mesh

Heavy metals

≤10ppm

Pb

≤3ppm

Cd

≤1ppm

Hg

≤0.1ppm

Limit of polymer content

≤2.0%

Residual of Cyclohexane

≤1000ppm

Residual of Ethyl Acetate

≤250ppm

Residual of Toluene

≤20ppm

Assay of Alpha Lipoic Acid

99%~101%

Single unknown impurity

≤0.1%

Total impurities

≤2.0%

Total aerobes counts

≤1000 CFU/g

Moulds and Yeasts

≤100 CFU/g

E.coli/Salmonella

Absence/g

Staphylococcus aureate

Absence/g

Package

25kg/Fiber drum

Storage condition

Store in a well closed place with constant low temperature and no direct sun light

Shelf life

Two years when properly stored