Appearance

Off-white to white powder

Identification

1

Chemical identification

2

Infrared spectrometry

3

Chloride identification

PH

3.5-4.5

Clarity and Color of Solution

Clear and colorless，if there is the turbidity and color，less than turbidity-1 and yellow-1

Related substances

Max single impurity

≤0.1%

Total impurities

≤1.0%

Loss on drying

≤1.0%

Residue on ignition

≤0.1%

Heavy metals

≤10ppm

Residual solvent

Methanol≤0.3％

Acetone≤0.5％ 

Dichloromethane≤0.06％

Assay (on dried basis)

≥99.0%