2-Thienylglyoxylic Acid
Thiophene-2-glyoxylic acid
CAS: 4075-59-6
Molecular Formula: C6H4O3S
2-Thienylglyoxylic Acid - Names and Identifiers
| Name | Thiophene-2-glyoxylic acid |
| Synonyms | 2-THIENYLGLYOXYLIC ACID 2-Thienylglyoxylic Acid 2-thiopenylglyoxylic acid oxo(thiophen-2-yl)acetate 2-Thiopheneglyoxylic acid 2-THIOPHENEGLYOXYLIC ACID Thiophene-2-glyoxylic acid α-oxo-2-thiopheneacetic acid 2-oxo-2-thiophen-2-ylacetate oxo(thiophen-2-yl)acetic acid 2-OXO-2-(2-THIENYL)ACETIC ACID alpha-oxothiophen-2-acetic acid ALPHA-OXO-2-THIOPHENEACETIC ACID |
| CAS | 4075-59-6 |
| EINECS | 223-794-2 |
| InChI | InChI=1/C6H4O3S/c7-5(6(8)9)4-2-1-3-10-4/h1-3H,(H,8,9)/p-1 |
2-Thienylglyoxylic Acid - Physico-chemical Properties
| Molecular Formula | C6H4O3S |
| Molar Mass | 156.16 |
| Density | 1.404 (estimate) |
| Melting Point | 88-91 °C (lit.) |
| Boling Point | 250.38°C (rough estimate) |
| Flash Point | 119.7°C |
| Vapor Presure | 0.00265mmHg at 25°C |
| Appearance | solid |
| BRN | 115791 |
| pKa | 2.09±0.54(Predicted) |
| Storage Condition | under inert gas (nitrogen or Argon) at 2–8 °C |
| Sensitive | Hygroscopic |
| Refractive Index | 1.5151 (estimate) |
| MDL | MFCD00005441 |
| Physical and Chemical Properties | Yellow crystalline powder, melting point 88-91 ℃. Soluble in dioxymethane and ethyl acetate, insoluble in petroleum ether and ether. |
2-Thienylglyoxylic Acid - Risk and Safety
| Risk Codes | 34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S27 - Take off immediately all contaminated clothing. S28 - After contact with skin, wash immediately with plenty of soap-suds. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 3261 8/PG 2 |
| WGK Germany | 3 |
| HS Code | 29349990 |
| Hazard Note | Irritant |
| Hazard Class | 8 |
| Packing Group | III |
2-Thienylglyoxylic Acid - Reference Information
| Use | 2-thiophene glyoxylic acid is an intermediate for the preparation of 2-thiophene acetyl chloride, usually obtained by the reaction of 2-acetylthiophene and sodium nitrite/hydrochloric acid. |
Last Update：2024-04-09 20:52:54
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