Analysis Contents

Analysis Standard

Analysis Results

Description

White or almost White crystals or Crystalline Powder

Pass

Identification

Positive Reaction

Positive

Melting Point

190℃-192℃

191.1℃

PH

2.1-2.6

2.40

Clarity Of Solution

Clear

Clear

Colour Of Solution

≤BY₇

<BY₇

Copper

≤5ppm

<5ppm

Heavy Metals

≤10ppm

<5ppm

Mercury

≤1ppm

<1ppm

Lead

≤2ppm

<2ppm

Arsenic

≤3ppm

<3ppm

Oxalic Acid

≤0.2%

<0.2%

Loss on Drying

≤0.4%

<0.4%

Residue On Ignition

≤0.1%

<0.1%

Specific Rotation

+20.5°–+21.5°

+21.2°

Organic Volatile Impurities

Pass

Pass

Assay

99.0%-100.5%

99.91%