Introduction：Basic information about 2,5-Thiophenedicarboxylic acid CAS 4282-31-9, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
2,5-Thiophenedicarboxylic acid Basic information
| Product Name: | 2,5-Thiophenedicarboxylic acid |
| Synonyms: | 2,5-Thiophenedicarbo;Thiophene -2,5- twocarboxylic acid;2,5-Thiophenedicarboxylic Acid, 97+%;2,5-Thiophenedicarboxylic acid 99%;2,5-Thiophenedicarboxylic acid,96%;TH-2COOH;2,5-DICARBOXYTHIOPHENE;2,5-THIOPHENEDICARBOXYLIC ACID |
| CAS: | 4282-31-9 |
| MF: | C6H4O4S |
| MW: | 172.16 |
| EINECS: | 224-284-2 |
| Product Categories: | Functional Materials;Reagents for Conducting Polymer Research;Thiophene Derivatives (for Conduting Polymer Research);Thiophen;Building Blocks;Heterocyclic Building Blocks;Heterocyclic Compounds;Thiophens;FINE Chemical & INTERMEDIATES;Thiophenes;Heterocycles;Thiophene&Benzothiophene;Organic acids |
| Mol File: | 4282-31-9.mol |
|
2,5-Thiophenedicarboxylic acid Chemical Properties
| Melting point | >300 °C (lit.) |
| 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 |
| pka | 2.76±0.10(Predicted) |
| form | solid |
| color | White to Light yellow |
| Water Solubility | Very soluble in water. |
| BRN | 136781 |
| InChI | InChI=1S/C6H4O4S/c7-5(8)3-1-2-4(11-3)6(9)10/h1-2H,(H,7,8)(H,9,10) |
| InChIKey | YCGAZNXXGKTASZ-UHFFFAOYSA-N |
| SMILES | C1(C(O)=O)SC(C(O)=O)=CC=1 |
| CAS DataBase Reference | 4282-31-9(CAS DataBase Reference) |
| EPA Substance Registry System | 2,5-Thiophenedicarboxylic acid (4282-31-9) |
Safety Information
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36-37/39 |
| WGK Germany | 3 |
| TSCA | TSCA listed |
| HazardClass | IRRITANT |
| HS Code | 29349990 |
| Storage Class | 11 - Combustible Solids |
| Hazard Classifications | Eye Irrit. 2
Skin Irrit. 2
STOT SE 3 |
2,5-Thiophenedicarboxylic acid Usage And Synthesis
| Chemical Properties | white to light yellow crystal powder |
| Uses | 2,5-Thiophenedicarboxylic acid may be used as a thiophene based linker in the preparation of magnesium coordination networks. It may also be used as a precursor in the synthesis of 2,5-bis-benzoxazoyl-thiophene (EBF).
It may be used in the synthesis of the following:
- new cobalt(II) thiophenedicarboxylate coordination polymer
- novel mesogenic thiophene based supramolecular liquid crystals
- two novel coordination polymers with the formula {[Ln2(2,5-tdc)3(dmso)2]H2O}n (Ln = Tb(III) and Dy(III)), (2,5-tdc2 = 2,5-thiophenedicarboxylate and dmso = dimethylsulfoxide)
|
| Synthesis Reference(s) | Journal of the American Chemical Society, 72, p. 2109, 1950 DOI: 10.1021/ja01161a065 |
| General Description | 2,5-Thiophenedicarboxylic acid (2,5-TDCA, H2TDC) is an important building block in the preparation of fluorescent brightening agent, fungicides and anti-cancer drug. It has been generated by chlorination of adipic acid using thionyl chloride. Due to its diverse coordination modes, it is an excellent choice as an aromatic linker to generate coordination networks. The enthalpies of combustion and sublimation of 2,5-thiophenedicarboxylic acid have been evaluated by rotary-bomb combustion calorimetry. |
2,5-Thiophenedicarboxylic acid Preparation Products And Raw materials
| Raw materials | Thionyl chloride-->Chlorobenzene-->Sodium sulfide-->Adipic acid-->Sodium sulfide nonahydrate-->diethyl thiophene-2,5-dicarboxylate-->2,5-Dimethylthiophene-->2,5-Thiophenedicarboxylic acid dimethyl ester-->Thiophene-2,5-dicarbonitrile-->2,5-DIIODOTHIOPHENE-->1-(5-Methyl-2-thienyl)ethan-1-one-->2,5-bis(chloroMethyl)thiophene |
| Preparation Products | 2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene-->5-Bromo-2-thiophenecarboxylic acid-->5-(trifluoroMethyl)-2-Thiophenecarboxylic acid |
