Thiophene-3,4-dicarboxylic acid

Chemical Properties

Melting point
227-231 °C

Boiling point
272.46°C (rough estimate)

Density 
1.473 (estimate)

refractive index 
1.5500 (estimate)

storage temp. 
Keep in dark place,Sealed in dry,Room Temperature

solubility 
soluble in Methanol

form 
Crystalline Powder

pka
3.36±0.20(Predicted)

color 
Yellow to beige-pinkish or light brown

λmax
240nm(H2O)(lit.)

InChI
InChI=1S/C6H4O4S/c7-5(8)3-1-11-2-4(3)6(9)10/h1-2H,(H,7,8)(H,9,10)

InChIKey
ZWWLLYJRPKYTDF-UHFFFAOYSA-N

SMILES
C1SC=C(C(O)=O)C=1C(O)=O