1-bromo-2-methylpropane

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Structural formula
Structural formula of 1-bromo-2-methylpropane
General
Surname 1-bromo-2-methylpropane
other names
  • iso- butyl bromide
  • Isobutyl bromide
  • 2-methylpropyl bromide
Molecular formula C 4 H 9 Br
Brief description

colorless liquid

External identifiers / databases
CAS number 78-77-3
EC number 201-141-2
ECHA InfoCard 100.001.038
PubChem 6555
Wikidata Q15632844
properties
Molar mass 137.02 g mol −1
Physical state

liquid

density

1.27 g cm −3

Melting point

−119 ° C

boiling point

92 ° C

Vapor pressure
  • 164 h Pa (40 ° C)
  • 246 hPa (50 ° C)
  • 465 hPa (65 ° C)
solubility
  • very sparingly soluble in water (0.6 g l −1 )
  • miscible with ethanol and ether
Refractive index

1.4350 (20 ° C)

safety instructions
GHS labeling of hazardous substances
02 - Highly / extremely flammable

danger

H and P phrases H: 225
P: 210-233-262-403 + 235
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

1-Bromo-2-methylpropane (also isobutyl bromide ) is a chemical compound from the group of saturated bromohydrocarbons and one of the isomeric butyl bromides .

Extraction and presentation

1-Bromo-2-methylpropane can be prepared by reacting isobutyl alcohol with phosphorus (III) bromide . It can also be obtained in small quantities by bromination of 2-methylpropane ( isobutane ), whereby mainly 2-bromo-2-methylpropane is formed.

properties

1-Bromo-2-methylpropane is a volatile, colorless liquid that is very sparingly soluble in water.

safety instructions

The vapors of 1-bromo-2-methylpropane can form an explosive mixture with air ( flash point 7 ° C).

Individual evidence

  1. ↑ a b c d e f g h i j k l m Entry on 1-bromo-2-methylpropane in the GESTIS substance database of the IFA , accessed on June 10, 2017(JavaScript required) .
  2. ↑ a b Data sheet 1-Bromo-2-methylpropane, 98 +% from AlfaAesar, accessed on July 20, 2013 ( PDF )(JavaScript required) .
  3. ↑ Joachim Buddrus: Fundamentals of organic chemistry . Walter de Gruyter, 2011, ISBN 3-11-024894-8 , p. 315 ( limited preview in Google Book search).
  4. ^ Kurt Peter C. Vollhardt, Neil Eric Schore: Organic Chemistry . John Wiley & Sons, 2011, ISBN 3-527-32754-1 , pp. 129 ( limited preview in Google Book search).