Item

Specification

Typical Test Result

APPEARANCE

White needle crystal powder crystal

White crystal

PURITY

PCT

99.5-101.0

99.8

MELTING POINT

DC

171-175

172.0-174.0

WATER

PCT

0.3 MAX

0.12

SOLUBILITY

Transparent without insoluble

matter

Transparent without insoluble

matter

RESIDUE ON IGNITION (ASH)

PCT

0.05 Max

0.001

HEAVY METAL(Pb)

PCT

0.002 Max

0.0010

IRON (Fe)

PCT

0.002 Max

0.0009