Appearance

White crystalline powder

Conforms to   standard

Assay (on dry   basis) %

99.5-100.5

100.2

Loss   on drying %

≤0.20%

0.08

Residue on   ignition %

≤0.1％

0.02

Reducing Sugars   %

≤0.3％

<0.3

Ribitol and   glycerol

≤0.1％

<0.1

PH

5.0-7.0

6.57

Melting range℃

119~123℃

119.1-121.3

Heavy metal(As)   mg/kg

≤0.3 mg/kg

< 0.3

Pb mg/kg

≤1.0 mg/kg

< 1.0

Bacterium total

≤300 cfu/g

< 40

E.Coli

≤3.0 MPN/g

<3.0

Pathogenic   bacteria

Negative

Conform