Potassium Bromide
Molecular formula: KBr Molecular weight : 119.01
Uses: Used in the manufacture of photographic film developing agent, bleach film thickening agent, color photos. Medicine for a nervine, but also for the manufacture of special soap, engraving and lithography system crystal industrial synthesis.
Property:White crystal, no smell, taste salty and slightly bitter, Specific gravity 2.75 (25 ℃), Melting point 734 ℃, Boiling point 1435℃, soluble in water and glycerin, insoluble in alcohol and ether, slightly deliquescence, netural matter in the water .
CAS#: 7758-02-3 Customs No.: 28275100 MSDS: YB0404-01 Risk No.: Non-dangerous
Product specification |
Export grade |
Photographic grade |
Reagent grade |
Standard |
USP-34 |
HG/T3570-2001 |
GB/T649-1999 |
Assay ％ |
≥99.5 |
≥99.5 |
≥99.0 |
Water insoluble ％ |
≤0.005 |
≤0.01 |
≤0.005 |
Chloride (Cl) ％ |
≤0.2 |
≤0.5 |
≤0.2 |
Iodide(I) ％ |
≤0.05 |
≤0.01 |
≤0.005 |
Bromate(BrO32-) ％ |
≤0.001 |
≤0.003 |
≤0.001 |
Ba ％ |
≤0.0002 |
≤0.002 |
≤0.002 |
Ca ％ |
≤0.0001 |
≤0.001 |
≤0.002 |
Mg ％ |
≤0.0001 |
≤0.001 |
≤0.0005 |
Na ％ |
≤0.005 |
≤0.005 |
≤0.02 |
Total Nitrogen (N) ％ |
≤0.0005 |
≤0.0005 |
≤0.001 |
Bi ％ |
≤0.0002 |
≤0.0005 |
≤0.0001 |
Sulfate (SO42-) ％ |
≤0.002 |
≤0.005 |
≤0.01 |
Fe ％ |
≤0.00005 |
≤0.0001 |
≤0.0002 |
Cu ％ |
≤0.0005 |
≤0.002 |
- |
Heavy metal
(Pb) ％ |
≤0.00002 |
≤0.00005 |
≤0.002 |
PH value (15％ Aq. solution/25℃) |
6-7.5 |
6-7.5 |
5.5-8.5 |
Intermediate inspection |
Appearance Identification |
white crystal |
white crystal |
white crystal |
Loss on dry (105℃/2H) ％ |
≤0.1 |
≤0.2 |
≤0.2 |
Whiteness (70-90umGranularity) ％ |
≥90 |
≥85 |
≥85 |
Transmission (15％ Aq. solution) ％ |
≥98 |
≥96 |
≥95 |
Granularity (U.S.SCREEN) mesh |
90％ pass 30-100 mesh |
90％ pass 30-100 mesh |
90％ pass 30-100 mesh |
Shelf life year |
Two years |
one year |
Two years |
Supply reference |
Production process |
Recrystallization method |
Recrystallization method |
Urea restore method |
Packing |
25KG bag/22T/(20')FCL |
25KG bag/22T/(20')FCL |
25KG bag/22T/(20')FCL |
Specification of price |
FCL |
FCL |
FCL |
Quoted price CNY/T |
|
|
|
Validity period of quoted price |
3 months |
3 months |
3 months |
Note: special requirements are negotiable for customers with specific specifications. |
