Specification

Appearance

Colorless   to light   yellow liquid or solid

Purity

≥99.0%

Largest single impurity

≤0.3%

Assay(On anhydrous basis)

98%－102%

Water content

≤0.5%

Total heavy metals

≤20ppm

Arsenic

≤0.5ppm

Lead

≤0.5ppm

Mercury

≤0.3ppm

Cadmium

≤0.5ppm