Potassium bromide

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Product Description

Molecular Formula: KBr
CAS: 7758-02-3
Uses: Used in the emulsion of movie film and photographic film or in the preparation of developers; used as a sedative in medicine.
Packaging: 25kg woven bag with plastic liner or 25kg cardboard drum.

 

Item

Photographic Grade 1

Photographic Grade 2

Superior Grade

Main Content (Dry Basis)

≥99.5%

≥99.5%

≥99.0%

Water

≤0.3%

≤0.3%

≤0.5%

Chloride

≤0.2%

≤0.2%

≤0.5%

Bromate

≤0.001%

≤0.003%

≤0.005%

Iodide

≤0.001%

≤0.005%

≤0.005%

Sulfate

≤0.005%

≤0.005%

≤0.01%

PH value (5%)

6.0—7.5

5.5—7.5

5.5—7.5

Arsenic

≤0.0004%

Lead

≤0.2ppm

≤4ppm

≤10ppm

Iron

≤0.5ppm

≤4ppm

≤5ppm

Copper

≤0.5ppm

≤1.0ppm

≤1ppm

Bismuth

≤0.2ppm

≤0.5ppm

Transmittance of aqueous solution (250g/l)

93~100(410nm)

85~100(410nm)

Clarity Test

Qualified

Qualified

Ammonia

≤15.0ppm

Color of aqueous solution (250g/l)

≤15.0 black

Packaging

25kg/bag, drum; Cardboard drum or woven bag with plastic liner

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