2,5-Thiophenedicarboxylic acid

  • 2,5-Dicarboxythiophene
Formula
C6H4O4S
Structure

Registry Numbers and Inventories.
CAS
4282-31-9
EC (EINECS/ELINCS)
224-284-2
R 36/37/38
Beilstein/Gmelin
136781
Beilstein Reference
5-18-07-00049
Canada DSL/NDSL
NDSL
US TSCA
Listed
Korea ECL
Listed

Properties.
Formula
C6H4O4S
Formula mass
172.16
Melting point, °C
359
Sublimation point, °C
150
Solubility in water
Very soluble
Refractive index
 
pKa/pKb
2.62
Partition coefficient, pKow
1.19

Hazards and Protection.

Fire.

Health.
Exposure effects
The toxicological properties of this material have not been investigated. Use appropriate procedures to prevent opportunities for direct contact with the skin or eyes and to prevent inhalation.

First aid
 

Transport.