The performance and application of hydrobromic acid

[Molecular formula]HBr

[Properties]Aqueous solution of hydrogen bromide, colorless or light yellow liquid, is one of the strong acids. Slight smoke, exposure to the air or under the action of light will become dark due to free bromine. It is irritating and miscible with water, acetic acid and ethanol. At 0°C, the saturated aqueous solution contains 68.85% hydrogen bromide. The boiling point of the boiling mixture of hydrobromic acid at 101325Pa (1 atmosphere) is 126°C, containing 47.5% hydrogen bromide, and the relative density is 1.481. It has strong reducibility and is corrosive to other metals except gold, platinum, barium and other metals. effect.

[hydrobromic acidUse]Manufacturingsodium bromide,potassium bromide , lithium bromide、Cobalt bromide、Aluminum Bromide,Cesium Bromide Other inorganicbromineCompounds andBromineMethane,BromineEthane and other organicbromine CompoundBasicRawMaterials. PetroleumChemical useAsFangxu compoundAlkaneskylation, consonantconjugation Catalyst for isomerization of dienes; alkoxygroupand Benzeneoxygen Separation agent for compounds. In medicine, it is used to synthesize anesthetics andTownDrunk etc. also usedinSynthetic fragrance, dye and used as metal mineralSolubleEtc..

[hydrobromic acidBriefMethod]

① Red phosphorus method and sulfur dioxide method are commonly used. The red phosphorus method is to react red phosphorus with bromine to generate hydrobromic acid and phosphorous acid, and then produce hydrobromic acid after sedimentation, filtration and distillation. The sulfur dioxide method is to pass sulfur dioxide into a reaction kettle containing bromine and crushed ice, and distill the mixed liquid. Add barium hydroxide solution to the evaporated liquid to react with the generated sulfuric acid, and bromic acid can be obtained after standing, filtering and distilling.

② Hydrobromic acid can also be obtained by distilling a mixture of sodium bromide and 50% sulfuric acid.

[Safety and protection] Hydrobromic acid is a secondary inorganic acid corrosive substance, hazard number: 93008, packed in plastic barrels or porcelain jars, with a net weight of 20kg per barrel. It is very sensitive to light and should be stored in a dark place, separate from alkalis. Rinse with water or alkaline water when spilled.

Contact with the skin will cause itching and even inflammation, the skin should be washed immediately with water. Vapors are highly irritating to respiratory organs.