Items

Specifications

Results

Appearance

White or milk whitecrystalline porder

Qualified

Identification

Must pisitive

Positive

Odor

Characteristicless

Qualified

Colour of solution

Must qualified

Qualified

Related substances

Must qualified

Qualified

Residual Solvent

≤0.5%

Qualified

Acidity or alkalinity(PH)

4.5-7.0

6.0

Absorptivity

137 - 147

145

Optical rotation

 -1.27° -1.34°

1.31°

Heavy metals

≤20ppm

<20ppm

Losson drying

≤0.5%

0.35%

Sulphated ash

≤0.1%

0.05%

Assay

99.0-101.0%

99.98%