ASSAY

99.0- 102.0%

PURITY

NOT LESS THAN 98.5%

LOSS ON DRYING

NOT MORE THAN 0.30%

SPECIFIC OPTICAL ROTATION

18.5- 19.5

HEAVY METALS

<5PPM

SULFATE ASH

<0.05%

Arsenic

<0.5PPM

MELTING POINT

NOT LESS THAN 147 DC

TRANSMITTANCE (20%)

NOT LESS THAN 97.0%