4-Methoxythiophene-3-carboxylic acid
[CAS# 71050-40-3]

Identification

• Name: 4-Methoxythiophene-3-carboxylic acid
• Molecular Formula: C₆H₆O₃S
• Molecular Weight: 158.18
• CAS Registry Number: 71050-40-3
• EC Number: 874-546-0

Properties

• Solubility: Slightly soluble (4.6 g/L) (25 ºC), Calc.^*
• Density: 1.370±0.06 g/cm³ (20 ºC 760 Torr), Calc.^*
• Melting point: 106-107.5 ºC^**

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2013 ACD/Labs)

^** Press, Jeffery B.; Journal of Organic Chemistry 1979, V44(19), P3292-6.

Safety Data

Hazard Classification

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