Appearance

White or light brown powder,odorless or slight special odor

Conform

Content (Dry basis)

≥98.5%

98.66%

Specific rotation

+18.0°~+ 21.5°

+20.51°

Dry weightlessness

≤1.0%

0.59%

Burn draff

≤0.3%

0.18%

Ammonium salt

≤0.04%

0.015%

Heavy metal (as Pb)

≤0.003%

0.0012%

Arsenic

≤0.0002%

0.00011%

Cadmium

0.0003%

Hg

0.00004%

PH(10g/dl)

5.0~6.0

5.79

 Analytical conclusion

The batch tested complies with NY39-1987