CHANGZHOU HIGHASSAY® CHEMICAL CO., LTD

Description:

orange-yellow to brownish-yellow crystalline powder of bitter taste.

Identification:

IR absorption spectrum, compared to the reference standard

Melting point:

175-181°C

Chloride (Cl):

0.02%max.

Sulfate (SO4):

0.05%max.

Nitrate:

absent

Loss on drying:

1%max.(2 hours,105°C )

Sulfated ash:

0.2%max.(According to USP23)

Heavy metals:

not more than 20 ppm

Assay:

98.0%min. C9H6N2O3,calculated on the dried basis.