Product Name:Potassium bromide
CAS Number: 77758-02-3
EINECS No.:231-830-3
UN NO.:1744
CLASS:5.1
Molecular Weight: 119
Molecular Formula:Kbr
Appearance: white to light yellow powder
It is mainly used for the motion picture film, photographic film or emulsion formulated developer, used as a sedative in medical
SPECIFICATION
Product Name: Potassium bromide
Project | A photo | Photo two | Premium 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(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 | — |
Aqueous transmittance(250g/l) | 93~100(410nm) | 85~100(410nm) | — |
Clarity test | Qualified | Qualified | — |
Ammonia | ≤15.0ppm | — | — |
Water color(250g/l) | ≤15.0Hazen | — | — |
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