Product Quality

Specifications

( HG 2936-1987 )

Mn:

32% min

As:

0.5ppm max

Pb:

15ppm max

Cd:

15ppm max

Hg:

0.5ppm max

Particle Size (through 425 µm Sieve):

>95%

Color

Off white to pale pink-colored powder

Insoluble matter                          

0.05%

Test item

Specification

Reagent grade

Pharmaceutical grade

Appearance

Conform

Conform

Assay /%

≥99

≥98

Water insoluble /%

≤0.005

≤0.01

Chloride (Cl)/%

≤0.002

≤0.005

Ferric (Fe)/%

≤0.0005

≤0.0015

Nickel  (Ni)/%

≤0.02

Zinc (Zn)/%

≤0.02

≤0.05

Heavy metal (Pb)/%

≤0.0002

≤0.001

Vulcanization ammonium not sediment /%

≤0.25

≤0.5

Reduction of potassium permanganate substances

Conform

Conform