Item

Specification

Test result

Characters

A white crystalline powder

A white crystalline powder

Infrared spectrum

To match with the working standard

Complies

Water

Not more than 5.0%

4.15%

Residual solvents

Meets the requirements

Complies

Specific rotation

-40.0°~-43.4°

-40.4°

Related substances

Not more than 2.0%

1.27%

Lead

Not more than 2ppm

Complies

Residue on ignition

Not more than 0.1%

0.1%

Assay

97.0%~102.0%

98.73%

PH

5.0~7.0

5.44

Melting Point

81~85°C

80.9~83.4°C

Total Aerobic Bacteria

<250cfu/g

120cfu/g

Coliform

<10mpn/g

Complies

Fungi

<100cfu/g

Complies

Solubility (25°C)

>100g per 100g of ethanol

Complies

~1.3g per 100g of water

Complies