Appearance

white powder

pass

Identification

meets the requirements

pass

Assay(on dry basis)

98.0%~102.0%

98.8%

Specific Rotation[a]²⁰_D

+14.5°~+16.5°

+15.0°

Transmittance:

95%MIN

99.5%

Loss on drying

4.5%MAX

3.92%

Heavy metal(as Pb)

10PPM MAX

<10PPM

PH data

4.5-6.0

4.9

Arsenic(as As)

3PPM MAX

<3PPM

Residue on ignition

0.2%MAX

0.09%

5-Benzyl-3,6-dioxo-2-Piperazi neacetic acid

1.5%MAX

0.2%

Other related substances:

2.0%MAX

pass