Vinyl bromide
- Vinyl bromide
- Vinylbromür
- Monobromethylen
- R 1140B1
- Bromethylen
Highly flammable, colorless gas with a pleasant odor
Gaseous
1.53 kg · m-3
-138 ° C
15.7 ° C
119 kPa ( 20 ° C)
Only slightly soluble in water
Risk
500 mg · kg -1 ( LD50, rat, oral)
79.2 kJ / mol
Template: Infobox chemical / molecular formula search available
Then Brome is a chemical compound from the group of aliphatic unsaturated halogenated hydrocarbons and organic bromine compounds.
History
Brome Then was discovered in 1835 by Henri Victor Regnault and described for the first time.
Production and representation
Can brome Then by reacting ethyne with hydrobromic acid by using mercury ( II) bromide are recovered, whereby 1,1- dibromoethane is formed.
Furthermore, it can be represented with potassium hydroxide by the reaction of 1,1- dibromoethane, 1,2- dibromoethane (both resulting from the reaction of ethene with bromine), followed by reduction.
Properties
Then Brome is chemically unstable and can spontaneously polymerize ( exposure to light ), so it comes in compressed gas cylinders in liquid form partly mixed with stabilizers in the trade. It is only slightly soluble in water but soluble in alcohol, acetone, benzene, ether and chloroform. Under certain conditions it outsourced to various simple compounds, such as hydrogen halides. With diazomethane it combines to form Pyrazolhydrobromid:
Use
Then brome is used as a flame retardant monomer for copolymers in the polymerization to synthetic fibers (for example, polyvinyl ), and as Alkylierungreagenz in organic syntheses.
Safety
Then Brome is classified as carcinogenic, category 2A. The vapors of Brome Then can combine with air to form an explosive mixture (ignition temperature 500 ° C).