240656

1,2-二溴乙烷

≥99%

• 别名: EDB, 二溴化乙烯
• 线性分子式: BrCH₂CH₂Br
• CAS号: 106-93-4
• 分子量: 187.86
• Beilstein: 605266
• EC 号: 203-444-5
• MDL编号: MFCD00000233
• UNSPSC代码: 12352100
• PubChem化学物质编号: 24854427
• NACRES: NA.22

属性

• 蒸汽密度: ~6.5 (vs air)
• 蒸汽压: 11.7 mmHg ( 25 °C)
• 方案: ≥99%
• 表单: liquid
• 折射率: n20/D 1.539 (lit.)
• 沸点: 131-132 °C (lit.)
• mp: 8-11 °C (lit.)
• 溶解性: water: soluble 250 part; alcohol: miscible(lit.); diethyl ether: miscible(lit.)
• 密度: 2.18 g/mL at 25 °C (lit.)
• 官能团: bromo
• SMILES字符串: BrCCBr
• InChI: 1S/C2H4Br2/c3-1-2-4/h1-2H2
• InChI key: PAAZPARNPHGIKF-UHFFFAOYSA-N

说明

一般描述

1,2-Dibromoethane (DBE) is an organobromine compound that is used as an ‘entrainment reagent′ to activate magnesium in Grignard reagents. It is also a useful reagent for activating zinc. DBE is used as an intermediate in the synthesis of dyes, pesticides and pharmaceuticals.[1][2]

应用

1,2-Dibromoethane can be used as a reagent to prepare:

• Vinyl bromide and 1,2-disubstituted ethane derivatives.[1][2]
• Vinyl aromatic compounds by palladium-catalyzed cross-coupling reaction with various arylboronic acids via in situ formation of vinyl bromide.[3]
• 2-arylsulfonyl hydrazones by reacting with aryldiazonium tetrafluoroborates, sulfur dioxide and hydrazines.[4]

It can also be used as a bromine source in organic synthesis to brominate carbanions.[1]

其他说明

储存时颜色可能变深

安全信息

• 象形图: GHS06,GHS08,GHS09
• 警示用语：: Danger
• 危险声明: H301 + H311 + H331,H315,H319,H335,H350,H411
• 预防措施声明: P273 - P280 - P301 + P310 - P302 + P352 + P312 - P304 + P340 + P311 - P305 + P351 + P338
• 危险分类: Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Chronic 2 - Carc. 1B - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• 靶器官: Respiratory system
• 储存分类代码: 6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• WGK: WGK 3
• 闪点(°F): Not applicable
• 闪点(°C): Not applicable
• 个人防护装备: Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter