Post by xg123 on Mar 5, 2012 14:30:08 GMT 7
Ammonium bromide(NH4Br), colorless or white crystalline powder, is tasteless and odorless. It has micro hygroscopicity when exposed within the air. NH4Br is soluble in water and alcohols although slightly soluble in ether, its aqueous solution is weak acid. Ammonium bromide slightly decomposes inside the air, thus precipitate tiny amount of bromine leaving the color yellow. The bromide ion in bromide can be replaced by CFCs. It may be oxidized by powerful oxidants for example hypochlorite, potassium permanganate, concentrated nitric acid and concentrated sulfuric acid, then bromine is isolated. The reaction amongst ammonium bromide and silver nitrate can produce the yellow silver bromide precipitation.
Synthesis: add water and liquid ammonia to a reactor, bromine is slowly added under stirring; temperature ought to be controled amongst 60 ~ 80 ??, by means of ammonia to pH 7, the reaction finish. The obtained reaction remedy by active carbon, filtration, evaporation, crystallization, drying derived bromide completed. By way of ammonia to pH 7~8 for the end of reaction. The obtained reaction resolution is filtered, evaporated and crystallizated by active carbon to genetate NH4Br. Keep the container tightly closed inside a cool, dry atmosphere away from heat.
Bromide ion can improve the procedure of cortical inhibition, produces sedative, in order that the cortical excitation and inhibition process can return to a balanced state. Oral easily absorbed and excreted by the kidneys, sodium chloride can increase the excretion rate. Employed as a sedative medicine towards the therapy of neurasthenia and epilepsy and other disorders. Photographic Market as a photographic emulsion. The timber market as a fire retardant. Spot evaluation for copper in analytical chemistry. Furthermore, for the slate and printing. It utilized as tranquilizers to the remedy of neurasthenia and epilepsy and other disorders inside the field of medicine even though as photographic emulsion in photographic market, and as fire retardant in timber business. Ammonium bromide(12124-97-9) can be applied to spot analysis for copper in analytical chemistry.
Ammonium bromide is regarded as having a low toxicity and will only give temporary discomfort if inhaled or if eye make contact with is produced. It could be harmful if ingested, particularly in big amounts.Ammonium bromide features a mutagenic impact on laboratory animals and human lymphocytes. If eye contact happens instantly wash the affected eye with big amounts of water till all evidence from the chemical has been removed. If discomfort persists seek medical attention. If inhaled remove from exposure. If discomfort persists seek medical attention. If ingested wash out the mouth with water and give plenty of water to drink. If ingested in huge amounts seek medical attention. Handle when wearing appropriate protective clothing which must include gloves and goggles. Avoid contact using the mouth.
Common Precautions: Use a fume hood; Stay away from skin and eye contacting with ammonium bromide ;Keep away from inhalation or ingestion of the powder of ammonium bromide;Maintain away from heat when store ammonium bromide;Not to be handled by staff who're pregnant;Use a fume hood to minimise exposure to this substance. Ammonium bromide Wear protective clothing. A extended sleeved laboratory coat or gown, rubber gloves, security goggles as well as a face mask as a minimal regular.
This article is reproduced from guidechem.com www.guidechem.com
Synthesis: add water and liquid ammonia to a reactor, bromine is slowly added under stirring; temperature ought to be controled amongst 60 ~ 80 ??, by means of ammonia to pH 7, the reaction finish. The obtained reaction remedy by active carbon, filtration, evaporation, crystallization, drying derived bromide completed. By way of ammonia to pH 7~8 for the end of reaction. The obtained reaction resolution is filtered, evaporated and crystallizated by active carbon to genetate NH4Br. Keep the container tightly closed inside a cool, dry atmosphere away from heat.
Bromide ion can improve the procedure of cortical inhibition, produces sedative, in order that the cortical excitation and inhibition process can return to a balanced state. Oral easily absorbed and excreted by the kidneys, sodium chloride can increase the excretion rate. Employed as a sedative medicine towards the therapy of neurasthenia and epilepsy and other disorders. Photographic Market as a photographic emulsion. The timber market as a fire retardant. Spot evaluation for copper in analytical chemistry. Furthermore, for the slate and printing. It utilized as tranquilizers to the remedy of neurasthenia and epilepsy and other disorders inside the field of medicine even though as photographic emulsion in photographic market, and as fire retardant in timber business. Ammonium bromide(12124-97-9) can be applied to spot analysis for copper in analytical chemistry.
Ammonium bromide is regarded as having a low toxicity and will only give temporary discomfort if inhaled or if eye make contact with is produced. It could be harmful if ingested, particularly in big amounts.Ammonium bromide features a mutagenic impact on laboratory animals and human lymphocytes. If eye contact happens instantly wash the affected eye with big amounts of water till all evidence from the chemical has been removed. If discomfort persists seek medical attention. If inhaled remove from exposure. If discomfort persists seek medical attention. If ingested wash out the mouth with water and give plenty of water to drink. If ingested in huge amounts seek medical attention. Handle when wearing appropriate protective clothing which must include gloves and goggles. Avoid contact using the mouth.
Common Precautions: Use a fume hood; Stay away from skin and eye contacting with ammonium bromide ;Keep away from inhalation or ingestion of the powder of ammonium bromide;Maintain away from heat when store ammonium bromide;Not to be handled by staff who're pregnant;Use a fume hood to minimise exposure to this substance. Ammonium bromide Wear protective clothing. A extended sleeved laboratory coat or gown, rubber gloves, security goggles as well as a face mask as a minimal regular.
This article is reproduced from guidechem.com www.guidechem.com