3257. 2,4-Dimethylsulfolane

Nomenclature

CAS number: 1003-78-7
Tetrahydro-2,4-dimethylthiophene 1,1-dioxide; 2,4-dimethylthiacyclopentane 1,1-dioxide; 2,4-dimethyltetramethylene sulfone; 2,4-dimethylcyclotetramethylene sulfone.
C6H12O2S; mol wt 148.22.
C 48.62%, H 8.16%, O 21.59%, S 21.63%.

Description and references

Prepd by catalytic hydrogenation of 2,4-dimethyl-3-sulfolene: Morris, Melchior, US 2451298 (1948 to Shell).

Chemical structure

Properties

Colorless to yellow liquid. d420 1.1362. nD20 1.4733. bp5 123.3°; bp 280-281° (some decompn). Miscible with lower aromatic hydrocarbons; partially miscible with naphthenes, olefins, paraffins. Limited miscibility with water.

Use

Solvent for liquid-liquid and vapor-liquid extraction processes.