A1285912
2-Butynoic acid , 98% , 590-93-2
Synonym(s):
Tetrolic acid
CAS NO.：590-93-2
Empirical Formula: C4H4O2
Molecular Weight: 84.07
MDL number: MFCD00004363
EINECS: 209-695-7
| Pack Size | Price | Stock | Quantity |
| 1G | RMB60.80 | In Stock |
|
| 5G | RMB135.20 | In Stock |
|
| 25G | RMB470.40 | In Stock |
|
| 100G | RMB1723.20 | In Stock |
|
| others | Enquire |
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 78-80 °C (lit.) |
| Boiling point: | 200-203°C |
| Density | 0,9641 g/cm3 |
| refractive index | 1.3918 (estimate) |
| Flash point: | 200-203°C |
| storage temp. | Sealed in dry,2-8°C |
| solubility | water: soluble50mg/mL, clear to very slightly hazy, colorless to very faintly yellow |
| form | Powder |
| pka | 2.62(at 25℃) |
| color | White to yellow |
| Water Solubility | Soluble in water. Slightly soluble in methanol and chloroform. |
| BRN | 1740205 |
| InChIKey | LUEHNHVFDCZTGL-UHFFFAOYSA-N |
| CAS DataBase Reference | 590-93-2(CAS DataBase Reference) |
| NIST Chemistry Reference | 2-Butynoic acid(590-93-2) |
| EPA Substance Registry System | 2-Butynoic acid (590-93-2) |
Description and Uses
Synthon employed in a variety of reactions, including cycloacylation of phenols to flavones and chromones,1 and cyclization to γ-butyrolactones.2
Safety
| Symbol(GHS) |  GHS05 |
| Signal word | Danger |
| Hazard statements | H314 |
| Precautionary statements | P260-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338-P363 |
| Hazard Codes | C |
| Risk Statements | 34-20/21/22 |
| Safety Statements | 26-27-36/37/39-45 |
| RIDADR | UN 3261 8/PG 2 |
| WGK Germany | 3 |
| TSCA | Yes |
| HazardClass | 8 |
| PackingGroup | II |
| HS Code | 29161900 |
| Limited Quantities | 1.0 L (0.3 gallons) (liquid) or 1 Kg (2.2 lbs) (solid) |
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml) |
