3-Methoxythiophene

CAS NO.：17573-92-1
Empirical Formula: C5H6OS
Molecular Weight: 114.17
MDL number: MFCD00043894
EINECS: 000-000-0
SAFETY DATA SHEET (SDS)
Update Date: 2026-01-13 11:13:54

What is 3-Methoxythiophene?

Chemical properties

Clear light brown liquid

The Uses of 3-Methoxythiophene

3-Methoxythiophene, is a heterocyclic building block used for the synthesis of more complex compounds containing Thiophene moiety. It can also be used for the preparation of novel thiophenyl-methylene-9H-fluorene-based low bandgap polymers.

Synthesis Reference(s)

Synthetic Communications, 20, p. 213, 1990 DOI: 10.1080/00397919008052285

General Description

3-Methoxythiophene is a thiophene. The intramolecular and intermolecular geometries of crystals of 3-methoxythiophene were studied. Spectroscopic studies of bipolarons derived from oligomerized 3-methoxythiophene in solution has been reported. The electropolymerization of 3-methoxythiophene on Pt and Fe electrodes in an aqueous micellar medium containing sodium dodecyl sulfate and 10^-3M bithiophene has been reported. Thin polymer films of 3-methoxythiophene at the cathode in a direct current discharge have been prepared.

Properties of 3-Methoxythiophene

Melting point:	49-50 °C(Solv: ethyl ether (60-29-7); ligroine (8032-32-4))
Boiling point:	80-82 °C/65 mmHg (lit.)
Density	1.143 g/mL at 25 °C (lit.)
refractive index	n20/D 1.532(lit.)
Flash point:	121 °F
storage temp.	Keep in dark place,Inert atmosphere,2-8°C
form	Liquid
color	Clear light brown
Sensitive	Air Sensitive
BRN	106404
CAS DataBase Reference	17573-92-1(CAS DataBase Reference)
NIST Chemistry Reference	Thiophene, 3-methoxy-(17573-92-1)

Safety information for 3-Methoxythiophene

Signal word	Warning
Pictogram(s)	Flame Flammables GHS02
GHS Hazard Statements	H226:Flammable liquids
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P240:Ground/bond container and receiving equipment. P241:Use explosion-proof electrical/ventilating/lighting/…/equipment. P242:Use only non-sparking tools. P243:Take precautionary measures against static discharge.