Sulfadiazine USP/BPsupplier API Pharmaceutical Sulfonamides made in china CAS NO.68-35-9

Appearance 

White,yellowish-white or pinkish-white,crystalline  powder or crystals,it melts at about 255℃，with decomposition.

Identification   

1. The infrared absorption spectrum concordant with the spectrum of sulfadiazine CRS.
2. The principal spot in TLC chromatogram obtained in position and size corresponds with sulfadiazine CRS.

Heavy metal

≤20ppm

Acidity

≤0.2ml(0.1ml/LNAOH)

Color of solution

≤Y5BY5GY5

Related substance

≤0.5%

Loss on drying

≤0.5%

Sulphated ash

≤0.1%

Assay

99.0%~101.0%(on the dried basis)