Appearance

White crystalline particles or crystalline powder

Item

Photographic grade

Top grade

Industrial grade

NaBr content (dry basis)

≥99.5%

≥99.0%

≥98.5%

Moisture

≤0.3%

≤0.5%

≤1.0%

Chloride

≤0.3%

≤0.6%

≤1.5%

Bromate

≤0.003%

≤0.003%

No reaction

Iodide

≤0.005%

≤0.01%

qualified

Sulfate

≤0.01%

≤0.02%

≤0.1%

PH value (5%)

5.5-8.0

5.5-8.0

5.5-10.5

Arsenic

≤0.5ppm

≤4ppm

-

Lead

≤0.5ppm

≤4ppm

-

Iron

≤1ppm

≤4ppm

-

Copper

≤1ppm

-

-

Clarity Test

qualified

-

-

Package

25kg plastic woven bag lined with plastic bag or 1000kg ton bag