Liquid bromine, i.e. liquid bromine, chemical formula: BrtwoIs a dark reddish brown liquid.It is easy to volatilize, and can be frozen into solid when the temperature is low. It is extremely toxic and corrosive.
Dark brownish red heavy liquid, easy to volatilize, and can be frozen into solid when the temperature is low.It is extremely toxic and corrosive.At normal temperature, it can emit strongly irritating smoke, stimulate the mucous membrane of eyes and respiratory tract, make people cry and cough, burn the skin, produce severe tingling, and is difficult to treat.Bromine is very active and a strong oxidant. It combines with arsenic and antimony to give off sparks.The affinity with hydrogen is very strong, similar to chlorine, but slightly weak. It can cause combustion when mixed with organic matter.Soluble in alcohol, ether, potassium bromide solution, alkali and carbon disulfide, soluble in water.Reducing substances such as ethylene can make bromine water fade.
Storage requirements
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In storage, it shall be treated according to both corrosive and oxidizing reagent requirements.The production unit usually adds about one-third of distilled water as a protective agent to prevent volatilization.It should be stored separately.Use glass stoppers when storing.Iodine and bromine in halogen elements are easy to decompose, and bromine is the only non-metallic element, which is liquid and easy to volatilize, so it should be isolated with water.The problem is water. In fact, water will react with bromine to generate hydrogen bromide and hypobromic acid. Hypobromic acid is very unstable and easy to decompose when exposed to light.In fact, it is stored in brown bottles to protect hypobromic acid. From the perspective of chemical balance, protecting hypobromic acid indirectly protects liquid bromine and slows down the further consumption of liquid bromine.Hypobromic acid decomposes into oxygen and hydrogen bromide（
）。When the temperature is low, attention should be paid to heat preservation to prevent bromine and distilled water from freezing and cracking the container.It should not be mixed with organics, inflammables, ammonia and acids.Bromine should be buried in wooden boxes of vermiculite, dry clay or calcium carbonate.Fire fighting method: In case of a fire accident, wear a gas mask and rubber gloves, stand at the windhead, and put out the fire with foggy water and dry sand.
purpose
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Oxidant, absorbent for ethylene and heavy hydrocarbon, silver removal from platinum, etc.Liquid bromine can be substituted with benzene in iron or ferric bromide to form bromobenzene.
Unexpected handling
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Liquid bromine is dropped on the skin and washed with alcohol.
