【Characteristics】:A white crystalline powder

Identification：According to BP98 USP24 EP97

Assay：84.0%-93.0%

Appearance of the solution：Clear and colourless

Crystallinly：Meets the requirements

Acidity：PH3.0-5.5

Specific Rotation：+135。-+150。

Water：＜3.0%-6.0%

Sulfated Ash：＜0.5%