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双原子溴

双原子溴
别名 二溴
溴分子
识别
CAS号 7726-95-6  checkY
PubChem 24408
SMILES
 
  • BrBr
性质
化学式 Br2
摩尔质量 159.81 g·mol−1
外观 红棕色的发烟液体,有刺激性味道[1]
密度 3.1 g/ml-1[1]
熔点 -7.2 °C[1]
沸点 58.8 °C[1]
临界点 103.0 bar,588.0 K[2]
溶解性 20 °C 下为 31g/l-1[1]
黏度 20 °C 下为 0.314mm2s-1
结构
空间群 Cmca (No.64) [3]
危险性
欧盟危险性符号
剧毒剧毒 T+
腐蚀性腐蚀性 C
危害环境危害环境N
警示术语 R:R26R35R50
安全术语 S:S1/2S26S45S61S7/9[4]
GHS危险性符号
《全球化学品统一分类和标签制度》(简称“GHS”)中腐蚀性物质的标签图案《全球化学品统一分类和标签制度》(简称“GHS”)中有毒物质的标签图案《全球化学品统一分类和标签制度》(简称“GHS”)中对环境有害物质的标签图案
H-术语 H314, H330, H400
NFPA 704
0
3
0
OX
相关物质
相关化学品 氟气
氯气
双原子碘
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

双原子溴 (Br2) 是由两个原子组成的分子,是溴的存在形式。

双原子溴是一种挥发性的红色液体。它是有毒的,可以造成严重的灼伤。双原子溴蒸气会侵蚀粘膜,皮肤和呼吸系统。 它的水溶液叫溴水,危害性较少。

溴的很多化合物可由双原子溴反应得到,包括氢溴酸是由氢气在双原子溴中燃烧制备而成的。[5]

危害

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双原子溴强氧化性,且因为易挥发而会释放红色的有毒窒息性气体。

如果接触到皮肤,双原子溴会产生很难治愈的伤口。

双原子溴可以被硫代硫酸钠破坏。

参考资料

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  1. ^ 1.0 1.1 1.2 1.3 1.4 国际化学品安全卡7726-95-6
  2. ^ Properties of Various Gases. flexwareinc.com. [12 April 2010]. (原始内容存档于2012-05-19). 
  3. ^ The Molecular Iodine (I2) Crystal Structure (A14). cst-www.nrl.navy.mil. [17 December 2009]. (原始内容存档于2009-04-21). 
  4. ^ Template:ESIS, consulté le 11 février 2009
  5. ^ Mills, Jack F. Bromine. Bromine: in Ullmann's Encyclopedia of Chemical Technology. Weinheim: Wiley-VCH Verlag. 2002. ISBN 978-3527306732. doi:10.1002/14356007.a04_391. 

外部链接

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双原子溴
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