tert-Butyl bromide

tert-Butyl bromide (also referred to as 2-Bromo-2-methylpropane) is an organic compound with a tert-butyl carbon frame and a bromine substituent. This organobromine compound is used as a raw material in synthetic organic chemistry. The compound is isomeric with 1-bromobutane and 2-bromobutane.

tert-Butyl bromide
IUPAC name
Other names
  • 1-Bromo-1,1-dimethylethane
  • Bromotrimethylmethane
  • 1,1-Dimethylethyl bromide
  • Trimethylbromomethane
3D model (JSmol)
ECHA InfoCard 100.007.333
EC Number
  • 208-065-9
RTECS number
  • TX4150000
UN number 2342
Molar mass 137.020 g·mol−1
Appearance Colorless liquid
Density 1.22 g mL−1 (at 20 °C)[2]
Melting point −16.20 °C; 2.84 °F; 256.95 K
Boiling point 73.3 °C; 163.8 °F; 346.4 K
log P 2.574
310 nmol Pa−1 kg−1
165.7 J K mol−1
−133.4 kJ mol−1
GHS pictograms
GHS Signal word Danger
Flash point 16 °C (61 °F; 289 K)
Lethal dose or concentration (LD, LC):
  • 1.25 g kg−1 (intraperitoneal, rat)
  • 4.4 g kg−1 (intraperitoneal, mouse)
Related compounds
Related alkanes
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

2-Bromo-2-methylpropane was used to study the massive deadenylation of adenine based-nucleosides induced by halogenated alkanes (alkyl halides) under physiological conditions. 2-Bromo-2-methylpropane causes the massive deguanylation of guanine based-nucleosides and massive deadenylation of adenine based-nucleosides.[3]

Phase transition from orthorhombic Pmn21 phase III at low temperatures (measurements from 95 K), to a disordered rhombohedral phase II at 205-213 K. Phase II can exist from 213-223 K, partly coincident with a FCC phase I, which can be observed between 210-250 K. Phase transitions have also been studied at high pressure (up to 300MPa)[4]


  1. "2-Bromo-2-methylpropane - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 26 March 2005. Identification. Retrieved 16 June 2012.
  2. CRC Handbook of Chemistry and Physics 65th Ed.
  3. “2-Bromo-2-Methylpropane 135615.” H2NC6H4CO2C2H5, Drugs, www.sigmaaldrich.com/catalog/product/aldrich/135615?lang=en®ion=US.
  4. “2-Bromo-2-Methylpropane Structures.” The Cambridge Crystallographic Data Centre (CCDC), www.ccdc.cam.ac.uk/structures/search?id=doi:10.5517/ccvcqmj&sid=DataCite.
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