Appearance:

Off-whit eor White Crystalline Powder

1 .

IR confirms with RS

Specific Rotation:

-0.5°~ +0.5°

Water contents:

≤ 4.0%

Related substances:

Total impurity ≤ 1.5% ;
Single impurity ≤ 0.2% .

Free aromatic amine:

≤ 0.05%

Methanol:

≤ 0.005%

Ethanol:

≤ 0.005%

Isopropyl alcohol:

≤ 0.005%

Methoxyethanol:

≤ 0.005%

Free Iodine:

confirms

Residue on Ignition:

≤ 0.1%

Heavy metal:

≤ 0.001%

Ionic compound:

≤ 0.001%

Ca:

≤ 0.0005%

Assay:

98.6% ~ 101.0%