MOLECULAR WEIGHT -------------------------- 126.12g/mol 

 CAS NUMBER ------------------------------------- 74638-76-9

SPECIFICATION

APPEARANCE : White to off white crystalline powder.

ODOR : Odorless 

SOLUBILITY : Soluble in propylene glycol

IDENTIFICATION 

A. BY INFRARED ABSORPTION : The IR spectrum of the sample should match with IR spectrum of working standard. 

B. CHLORIDE CONTENT : NMT 0.050% 

C. BY UV SPECTROSCOPY : 2000-2600

WATER CONTENT : 12.0% to 14.0%

LOSS ON DRYING : NMT:0.5% W/W

RELATED SUBSTANCES BY HPLC 

PURITY BY HPLC : NLT 98.0% 

A.2,4-DIAMINOPYRIMIDINE : NMT 0.60% 

B.2,4-DIAMINO 6-CHLOROPYRIMIDINE-3-OXIDE: NMT 0.20%