3,4-Dicarboxythiophene

Name	Thiophene-3,4-dicarboxylic acid
Synonyms	K0408 EA129 T5SJ CVQ DVQ [WLN] 3,4-Dicarboxythiophene THIOPHENE-3,4-DICARBOXY thiophene-3,4-dicarboxylate THIOPHENE-3,4-DICARBOXYLATE 3,4-THIOPHENEDICARBOXYLIC ACID 3,4-Thiophenedicarboxylic acid Thiophene-3,4-dicarboxylic acid THIOPHENE-3,4-DICARBOXYLIC ACID
CAS	4282-29-5
InChI	InChI=1/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

Molecular Formula	C6H4O4S
Molar Mass	172.16
Density	1.473 (estimate)
Melting Point	227-231 °C
Boling Point	272.46°C (rough estimate)
Flash Point	199.3°C
Solubility	soluble in Methanol
Vapor Presure	2.57E-07mmHg at 25°C
Appearance	Crystalline Powder
Color	Yellow to beige-pinkish or light brown
Maximum wavelength(λmax)	['240nm(H2O)(lit.)']
pKa	3.36±0.20(Predicted)
Storage Condition	Keep in dark place,Sealed in dry,Room Temperature
Refractive Index	1.5500 (estimate)
MDL	MFCD00067079

Hazard Symbols	Xi - Irritant
Risk Codes	36/37/38 - Irritating to eyes, respiratory system and skin.
Safety Description	24/25 - Avoid contact with skin and eyes.
WGK Germany	3
HS Code	29349990
Hazard Class	IRRITANT