Potassium bromide is an inorganic substance with the formula KBr and a relative molecular mass of 119.00. Colorless crystal or white powder, strong salty taste, see light color yellow. Slightly hygroscopic. 1g dissolved in 1.5ml water, the aqueous solution is neutral. The relative density is 2.75(25℃). Melting point 730℃. Boiling point 1435℃. It's stimulating. Mainly used for spectral analysis, spot analysis to determine copper and silver, polarographic analysis of indium, cadmium and arsenic, developer.
Colorless cubic crystal. Odorless, salty and slightly bitter. See light easily yellow, slightly hygroscopic. It is soluble in water (102g/100ml water at 100℃) and glycerin, slightly soluble in ethanol and ether. The aqueous solution is neutral. The bromine ion can be replaced by fluorine and chlorine. It reacts with sulfuric acid to form hydrogen bromide. Reacts with silver nitrate to form yellow silver bromide precipitate.
【 Use 1 】
An emulsion or developer used in cinematographic film or photographic film and used in medicine as a sedative.
【 Use 2 】
Used as an analytical reagent and developer, and also in the pharmaceutical industry.
【 Use 3 】
The photographic material industry is used to manufacture photographic film, developing drug, negative thickening agent, toner and color photo bleach. Used medically as a nerve sedative (tribromide tablet). In addition, it is also used for chemical analysis reagents, beam splitting and infrared transmission, making special soap, as well as engraving, lithography and other aspects.
【 Use 4 】
Used for the production of photographic film development drug, film thickening agent. It is also used as a nerve sedative, and is also used in making special soap, engraving and lithography.
【 Use 5 】
Copper and silver were determined by spot analysis. Polarographic analysis of indium, cadmium and arsenic. The developer. Pesticide analysis.
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