Item

Standard

Result

Appearance

White crystalline powder

Conforms

Specific rotation(a)D20

(C=5H2O)

-0.3º to 0.3º

-0.11º

Transmittance

Not less than 98.0%

98.0%

Melting Point (ºC)

180.0 ºC to 185.0 ºC

182ºC

Chloride(C1)

Not more than 0.02%

<0.02%

Ammonium(NH4)

Not more than 0.02%

<0.02%

Sulfate(SO4)

Not more than 0.02%

<0.02%

Heavy metals(Pb)

Not more than 10ppm

<10ppm

Iron(Fe)

Not more than 10ppm

<10ppm

Arsenic(As2O3)

Not more than 1 PPm

<1ppm

Loss on drying

Not more than 0.50%

0.42%

Residue on ignition

Not more than 0.2%

0.18%

Assay

99.0-101.0%

99.1%

Conclusion:The product conforms to AJI92 standard.