Item

standard (USP)

Properties

white Crystalline powder

Specific optical rotation

+52°—+54°

pH

3.00—4.50

Iron ion

≤10PPM

Heavy Metals

≤10PPM

Loss on Drying

≤1.00%

Assay

98.0%-102.0%(as dry)

Residue on Ignition

23.5—25.0%

Chloride

≤14.00%

sulfate

16.3%-17.3%

Organic volatile impurities

meets the requirements

Microbiological Test Total plate count Yeast&mold Salmonella E.Coli

MAX 500/gMAX 100/gnegative negative