| Identification | Back Directory | [Name]
THIOPHENE-3,4-DICARBOXYLIC ACID | [CAS]
4282-29-5 | [Synonyms]
3,4-Dicarboxythiophene
3,4-THIOPHENEDICARBOXYLIC ACID
THIOPHENE-3,4-DICARBOXYLIC ACID
3,4-Thiophenedicarboxylic acid,97%
3,4-Thiophenedicarboxylic acid ,98% | [Molecular Formula]
C6H4O4S | [MDL Number]
MFCD00067079 | [MOL File]
4282-29-5.mol | [Molecular Weight]
172.16 |
| Chemical Properties | Back Directory | [Appearance]
yellow to beige-pinkish or light brown crystalline | [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 | [form ]
Crystalline Powder | [pka]
3.36±0.20(Predicted) | [color ]
Yellow to beige-pinkish or light brown | [λmax]
240nm(H2O)(lit.) | [InChIKey]
ZWWLLYJRPKYTDF-UHFFFAOYSA-N |
| Hazard Information | Back Directory | [Chemical Properties]
yellow to beige-pinkish or light brown crystalline | [Uses]
Thiophene-3,4-dicarboxylic Acid is used in preparation of dibromo thienofuran dione. |
| Raw materials And Preparation Products | Back Directory | [Raw materials]
N,N-Dimethylformamide-->Ferric chloride-->Copper(I) Cyanide-->3,4-Dibromothiophene-->2-Butenedioic acid, 2,3-dimethyl-, dimethyl ester, (2Z)--->diethyl 2-(diethoxymethyl)butanedioate-->2-(Diethoxymethyl)-3-formylbutanedioic acid diethyl ester-->3,4-Diiodothiophene-->3,4-Thiophenedicarboxylic acid, diMethyl ester-->DIETHYL FORMYLSUCCINATE-->2,3-Dimethylmaleic anhydride-->3,4-DICYANOTHIOPHENE,-->3,4-Thiophenedicarboxylic acid, diethyl ester-->3,4-Thiophenedicarboxylic acid, 2,5-dihydro-, dimethyl ester-->Carbon dioxide | [Preparation Products]
1,3-Dibromo-5-octyl-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione-->4-BROMOTHIOPHENE-3-CARBOXYLIC ACID |
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