2-Thiophenecarboxylic Acid
Title: 2-Thiophenecarboxylic Acid
CAS Registry Number: 527-72-0
CAS Name: 2-Thenoic acid
Molecular Formula: C5H4O2S
Molecular Weight: 128.15
Percent Composition: C 46.86%, H 3.15%, O 24.97%, S 25.02%
Literature 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).
Properties: Needles from water, mp 128.5°. Very sol in ether, alc, hot water; moderately sol in CHCl3; slightly sol in petr ether.
Melting point: mp 128.5°
 
Derivative Type: Sodium salt
Additional Names: Sodium 2-thiophenecarboxylate; sodium 2-thenoate
Trademarks: Trophires
Molecular Formula: C5H3NaO2S
Molecular Weight: 150.13
Percent Composition: 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).

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