Item | First Photo Grade | Medical Grade |
Main content
(Dry Basis) |
≥99.50% | ≥99.00% |
Loss on drying | ≤0.50% | ≤0.50% |
Water Insoluble | ≤0.005% | – |
Chloride | ≤0.20% | ≤0.50% |
Iodide | ≤0.001% | ≤0.01% |
Sulphate | ≤0.005% | – |
PH Value,5% Solution(25℃) | 4.50—6.00 | 4.50—6.00 |
Pb | ≤0.2ppm | ≤0.5ppm |
Fe | ≤0.5ppm | – |
Cu | ≤0.5ppm | – |
Bi | ≤0.2ppm | – |
As | – | ≤0.4ppm |
Used for producing photographic film emulsion,development agent; medicine; used as wood corrosion; water treatment; fire retardant;etc…
PP bag with PE inner bag/fibre drum, 25kgs per bag/drum.
To be stored in cool dry place, no open air storage.
Colorless diamond crystal or white crystalline powder. Odorless and salty. d25 2.429, sublimated at 540℃. Soluble in water and alcohol, slightly soluble in ether. It is slightly hygroscopic when placed in the air, and decomposes slightly, and a small amount of bromine is precipitated to make the color yellow. It is stable to light and air in its pure state. The aqueous solution is neutral or weakly acidic, and reacts with silver nitrate to form a pale yellow silver bromide precipitate.