4,5-Dimethylthiophene-2-carboxylic acid
[CAS# 40808-24-0]

Identification

• Name: 4,5-Dimethylthiophene-2-carboxylic acid
• Synonyms: 4,5-Dimethyl-2-thiophenecarboxylic acid
• Molecular Formula: C₇H₈O₂S
• Molecular Weight: 156.20
• CAS Registry Number: 40808-24-0
• EC Number: 623-823-2

Properties

• Solubility: Very slightly soluble (0.94 g/L) (25 ºC), Calc.^*
• Density: 1.259±0.06 g/cm³ (20 ºC 760 Torr), Calc.^*
• Melting point: 210-212 ºC^**
• Boiling point: 290.6±35.0 ºC (760 Torr), Calc.^*
• Flash point: 129.5±25.9 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2017 ACD/Labs)

^** Sice, Jean; Journal of Organic Chemistry 1954, V19, P70-3.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Eye irritation	Eye Irrit.	2	H319
Acute toxicity	Acute Tox.	4	H302
Specific target organ toxicity - single exposure	STOT SE	3	H335
Skin irritation	Skin Irrit.	2	H315