9354. 2-Thiophenecarboxylic Acid

Nomenclature

CAS number: 527-72-0
2-Thenoic acid.
C5H4O2S; mol wt 128.15.
C 46.86%, H 3.15%, O 24.97%, S 25.02%.

Description and references

Prepn: Voerman, Rec. Trav. Chim. 26, 293 (1907); Sy, de Malleray, Bull. Soc. Chim. Fr. 1963, 1276; Gross et al., Ber. 96, 1382 (1963).

Chemical structure

Properties

Needles from water, mp 128.5°. Very sol in ether, alc, hot water; moderately sol in CHCl3; slightly sol in petr ether.

Derivative

Sodium salt.

Nomenclature

Sodium 2-thiophenecarboxylate; sodium 2-thenoate; Trophires.
C5H3NaO2S; mol wt 150.13.
C 40.00%, H 2.01%, Na 15.31%, O 21.31%, S 21.36%.

Use

Sodium salt as lubricating-grease thickener, Morway, Kolfenbach, US 2576031 (1951 to Standard Oil).