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2007•Journal of Salt and Chemical IndustryRequires access

Study on the Synthesis of Bromonitromethane

Lei Zhang

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Abstract

In the process for the preparation of bromonitromethane,nitromethane is reacted with salification and bromination method.The optimal reactive conditions were obtained as follows:(1)the molar ratio of nitromethane,sodium hydroxide and bromine was 1∶1.1∶1.02,(2)the mass concentration of sodium hydroxide is 30%,(3)the reaction temperature of the salification is between-15℃ and-10℃ and the time is 15min,(4)the reaction temperature of the bromination is between-10℃ and-5℃.The yield is 93.7% under this condition.The product was analyzed and confirmed by IR spectrum an GC,the mass concentration is 96.8%.

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What this paper is about

In the process for the preparation of bromonitromethane,nitromethane is reacted with salification and bromination method.The optimal reactive conditions were obtained as follows:(1)the molar ratio of nitromethane,sodium hydroxide and bromine was 1∶1.1∶1.02,(2)the mass concentration of sodium hydroxide is 30%,(3)the reaction temperature of the salification is between-15℃ and-10℃ and the time is 15min,(4)the reaction temperature of the bromination is between-10℃ and-5℃.The yield is 93.7% under this condition.The product was analyzed and confirmed by IR spectrum an GC,the mass concentration is 96.8%.

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Available abstract

In the process for the preparation of bromonitromethane,nitromethane is reacted with salification and bromination method.The optimal reactive conditions were obtained as follows:(1)the molar ratio of nitromethane,sodium hydroxide and bromine was 1∶1.1∶1.02,(2)the mass concentration of sodium hydroxide is 30%,(3)the reaction temperature of the salification is between-15℃ and-10℃ and the time is 15min,(4)the reaction temperature of the bromination is between-10℃ and-5℃.The yield is 93.7% under this condition.The product was analyzed and confirmed by IR spectrum an GC,the mass concentration is 96.8%.

Key concepts: Nitromethane, Chemistry, Bromine, Yield (engineering), Halogenation, Sodium hydroxide, Molar ratio, Nuclear chemistry

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