Item

Standard

Appearance

White  powder

Solubility (1.0g/20ml H₂O)

Clear   Colorless

Specific rotation(a)D20

(C=1 , H2O)

+7.5º to +8.5º

Assay

98.0-102.0%

Melting Point (ºC)

200ºC to 210 ºC

Heavy metals(Pb)

Not more than 20ppm

Chloride(C1)

Not more than 0.02%

Iron(Fe)

Not more than 10ppm

Arsenic(As2O3)

Not more than 4ppm

Moisture

Not more than 1.0%

Residue on ignition

Not more than 0.2%

Total plate count

Not more than 1,000cfu/g

Yeast and mold

Not more than 100cfu/g

PH

5.0-6.0