3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER , 98% , 1822-66-8

CAS NO.：1822-66-8

Empirical Formula: C10H12O6S

Molecular Weight: 260.26

MDL number: MFCD03094035

PRODUCT Properties

• Melting point: 132-135 °C(lit.)
• Boiling point: 153 °C
• Density: 1.017 g/mL at 25 °C
• refractive index: n20/D 1.4589
• Flash point: 150 °F
• storage temp.: 2-8°C(protect from light)
• pka: 8.40±0.20(Predicted)
• Appearance: Light yellow to yellow Solid
• InChI: InChI=1S/C10H12O6S/c1-3-15-9(13)7-5(11)6(12)8(17-7)10(14)16-4-2/h11-12H,3-4H2,1-2H3
• InChIKey: YOKOBAHUBJPMGP-UHFFFAOYSA-N
• SMILES: C1(C(OCC)=O)SC(C(OCC)=O)=C(O)C=1O

Description and Uses

3,4-Dihydroxythiophene-2,5-dicarboxylic Acid Diethyl Ester is an intermediate used to prepare alkylenedioxythiophene monomers to obtain electrochromic conducting polymers.

Safety

• Symbol(GHS): GHS05,GHS06,GHS08
• Signal word: Danger
• Hazard statements: H330-H302+H312-H314-H360-H317-H334-H402
• Precautionary statements: P501-P273-P272-P260-P270-P202-P201-P271-P264-P280-P284-P308+P313-P362+P364-P303+P361+P353-P333+P313-P301+P330+P331-P301+P312+P330-P304+P340+P310-P305+P351+P338+P310-P403+P233-P405
• Hazard Codes: T,Xi
• Risk Statements: 61-20/21-36-36/37/38
• Safety Statements: 53-45-36-26-36/37
• WGK Germany: 3
• HS Code: 2934999090