TERT-BUTYL ALCOHOL (TBA) OR TERT-BUTANOL

analytical standard

Synonym: 2-Methyl-2-propanol, tert-Butanol, Trimethyl carbinol

·         CAS Number 75-65-0

·         Linear Formula (CH₃)₃COH

·         Molecular Weight 74.12

·          Beilstein Registry Number 906698

·          EC Number 200-889-7

·          MDL number MFCD00004464

·          PubChem Substance ID 329757613

tert-Butyl alcohol (TBA), also called tert-butanol, is the simplest tertiary alcohol, with a formula of (CH₃)₃COH (sometimes represented as t-BuOH). It is one of the four isomers of butanol.^[5] tert-Butyl alcohol is a colorless solid, which melts near room temperature and has a camphor-like odor. It is miscible with water, ethanol and diethyl ether.

Detailed description

Natural occurrence

tert-Butyl alcohol has been identified in beer and chickpeas.^[6] It is also found in cassava^[7] which is used as fermentation ingredient in certain alcoholic beverages.

Preparation

tert-Butyl alcohol is derived commercially from isobutane as a co-product of propylene oxide production. It can also be produced by the catalytic hydration of isobutylene, or by a Grignard reaction between acetone and methylmagnesium chloride.

Purification cannot be performed by simple distillation due to formation of an azeotrope with water, although initial drying of the solvent containing large amounts of water is performed by adding benzene to form a tertiary azeotrope and distilling off the water. Smaller amounts of water are removed by drying with calcium oxide (CaO), potassium carbonate (K₂CO₃), calcium sulfate (CaSO₄), or magnesium sulfate (MgSO₄), followed by fractional distillation. Anhydrous tert-butyl alcohol is obtained by further refluxing and distilling from magnesium activated with iodine, or alkali metals such as sodium or potassium. Other methods include the use of 4 Å molecular sieves, aluminium tert-butylate, calcium hydride (CaH₂), or fractional crystallization under inert atmosphere.

Applications

tert-Butyl alcohol is used as a solvent, ethanol denaturant, paint remover ingredient, and gasoline octane booster and oxygenate. It is a chemical intermediate used to produce methyl tert-butyl ether (MTBE) and ethyl tert-butyl ether (ETBE) by reaction with methanol and ethanol, respectively, and tert-butyl hydroperoxide (TBHP) by reaction with hydrogen peroxide.

PRICE

$42140.49/KG OR $19154.76/IB

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