Items

Specifications

Results

Characteristic

Yellow crystalline powder

Comply

Solubility

Freely soluble in water,sparingly soluble in ethanol,solutions in water become turbid on standing,owing to the precipitation of Oxytetracycline

Copmly

Specific optical rotation

-188°~200°

-188°

PH

2.3~2.9

2.5

Light absorption

Not greater than 0.5

0.25

Related substance

Not more than 0.5%

Copmly

Sulfated ash 

Not more than 0.5%

0.09%

Water

Not more than 2.0%

1.1%

Assay

95.0%~102.0%

96.2%