Items

Specification

Appearance:

Light yellow to yellow crystals.

Solubility:

Soluble in dimethylformamide and in dichloromethane. Slightly soluble in methanol.

Identification:

1)      Potassium permanganate test

2)      Potassium iodice test

3)      IR absorption spectrum

4)      Absorption spectrum (lin 100,000)

Absorption:

E^175cm_(350nm) 665-705

Melting range:

142-146 celsius degree

Heavy metals:

Not more than 10ppm

Arsenic:

Not more than 1ppm

Related substances:

Not more than 0.20%

Loss on drying:

Not more than 0.20%

Sulfated ash:

Not more than 0.1%

Assay(HPLC):

Not less than 98.5%