Items

Specification

Characteristic 

White or off-white crystalline powder

Odor

Odorless

Assay, on dry basis

≥99.0%

Water content

≤0.3%

Reducing sugars (as glucose)

≤0.1%

Residue on ignition

≤0.1%

Specific optical rotation

+105.5°~ +108.5°

Lead

≤ 0.5mg/kg

Nickel

≤1mg/kg

Arsenic

≤1mg/kg

Sulfate

≤100mg/kg

Chloride

≤50mg/kg

Heavy metal (as Pb)

≤5mg/kg

Conductivity

≤20μs cm-1

Melting point

148.0~151.0℃

Particle Size

95% pass 30mesh

Aqueous Solution

Clear and colorless

Aerobic plate count

≤100cfu/g

Yeasts

≤10cfu/g

Moulds

≤10cfu/g

Escherichia Coli

Absent

Salmonella 

Negative