471712 Sigma-Aldrich


anhydrous, ≥99.5%

Synonym: 2-Methyl-2-propanol, tert-Butyl alcohol, Trimethyl carbinol

  • CAS Number 75-65-0

  • Linear Formula (CH3)3COH

  • Molecular Weight 74.12

  •  Beilstein/REAXYS Number 906698

  •  EC Number 200-889-7

  •  MDL number MFCD00004464

  •  PubChem Substance ID 57650901

  •  NACRES NA.21



Related Categories Anhydrous Solvents, Solvent Bottles, Solvent Packaging Options, Solvent by Application, Solvents,
Quality Level   100
grade   anhydrous
vapor density   2.5 (vs air)
vapor pressure   31 mmHg ( 20 °C)
  44 mmHg ( 26 °C)
assay   ≥99.5%
form   solid or liquid
autoignition temp.   896 °F
expl. lim.   8 %
impurities   <0.005% water
evapn. residue   <0.0003%
refractive index   n20/D 1.387 (lit.)
pH   7 (20 °C)
bp   83 °C (lit.)
mp   23-26 °C (lit.)
solubility   water: miscible
density   0.775 g/mL at 25 °C (lit.)
storage temp.   room temp
SMILES string   CC(C)(C)O
InChI   1S/C4H10O/c1-4(2,3)5/h5H,1-3H3


General description

tert-Butanol (tBA) is a tertiary alcohol. It undergoes dehydration by reactive distillation in the presence of solid acid catalyst to form isobutylene with high selectivity. Lipase-mediated alcoholysis of soybean oil deodorizer distillate (SODD) has been conducted in tBA (as reaction medium) to generate biodiesel. Formation of 2-tert-butyl-p-cresol (TBC), 2,6-di-tert-butyl-p-cresol (DTBC) and tert-butyl-p-tolyl ether has been reported when p-cresol undergoes butylation by tBA in the presence of 12-tungstophosphoric acid supported on zirconia (TPA/ZrO2) catalyst. The interaction behavior of tBA on the Si (001)-(2×1) surface has been assessed by using the ab-initio density functional theory (DFT) based on pseudopotential approach.


100 mL in Sure/Seal™

Safety & Documentation

Safety Information

Signal word 
Hazard statements 
UN1120 - class 3 - PG 2 - Butanols
WGK Germany 
Flash Point(F) 
59.0 °F - closed cup
Flash Point(C) 
15 °C - closed cup


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles


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