TERT-AMYL ALCOHOL

Product name: 2-Methyl-2-butanol

Synonymous: tert-Amyl alcohol; 1,1-Dimethyl-1-propanol; tert-Pentyl alcohol; T-amyl b alcohol; Sultamicillin; TAA

Cas: 75-85-4

EINECS: 200-908-9

Molecular formula: C5H12O

Molecular weight: 88.15

Molecular structure:

Properities

Appearance: colorless and transparent liquid

B.P.: 101.8°C

M.P.: -11.9°C

Flash point: 24°C

Density: 0.809g/cm3 (24°C)

UN code: 1105, Hazard class: 3

Packing: 165kg drum or ISO TANK.

Shipment: 13.2mt/20' fcl or 18.4mt/TANK.

The specification:

Assay: 99.5% min.

Moisture: 0.1% max.

Color (APHA): 10 max.

Distillation range:

Initial boiling point: 101 c degree min.

Dry point: 102.5 c degree max.

Usage: it is excellent solvent, can be used in the production of flavorpesticide and additives of petroleum ,also can be use as the raw material of color film.

Process introduction:

Our process for the preparation of tert.-amyl alcohol (TAA) comprising conducting a hydration reaction of a reaction mixture consisting of an (a) i-amylene or a C5 -distillation cut containing i-amylene, relative to the amount of iso-amylene, on an acid cation exchanger, wherein the reaction is carried out in a range from 5°C. below to 5°C. above the boiling point of the i-amylene or the C5 -distillation cut.

The process is particularly characterized in that it is carried out in the vicinity of the boiling point of the i-amylanes. For this purpose, the reaction is carried out, in particular, in a range from 5° below to 5° above the boiling point of the i-amylenes at the reaction pressures set in each case. Preferably, it is carried out in a range from 5° below to 2° above the boiling point of the i-amylenes, particularly preferably in a range from 2° below to 2° above the boiling point.

The i-amylenes to be hydrated (2-methyl-1-butene and 2-methyl-2-butene) can be used in the form of the C 5 distillation cut (so-called benzene forerun) or particularly preferably in the form of concentrated or even essentially pure i-amylenes.

The process allows higher TAA contents in the reaction mixture than processes of the prior art. These higher contents are 25-60% by weight, typically 40-50% by weight, relative to the sum of TAA and i-amylenes (if used as pure i-amylenes, relative to the entire reaction product).