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Ethylethinylether
ETHOXYACETYLENE · ETHYL ETHYNYL ETHER · 1-Ethoxyacetylene · Ethynyl ethyl ether · ethoxy-ethyn · ETHOXYETHYNE · EthoxyacetyL · ethynoxyethane
Identifikatoren & physikalische Daten
| CAS No. | 927-80-0 |
|---|---|
| Summenformel | C4H6O |
| Durchschnittliche Molmasse | 70,09 g/mol |
| Monoisotopische Masse | 70,04186481 g/mol |
| SMILES | C#COCC |
| InChIKey | WMYNMYVRWWCRPS-UHFFFAOYSA-N |
| PubChem CID | 61239 |
| EC No. | 213-164-5 |
| DTXSID | DTXSID80239114 |
| Lokaler Name | Ethylethinylether |
Chemische & physikalische Eigenschaften
| XLogP | 1,1 |
|---|---|
| Polarare Oberfläche (TPSA) | 9,2 |
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 1 |
| Frei drehbare Bindungen | 2 |
| Schwere Atome | 5 |
| Formalladung | 0 |
| Komplexität | 47,9 |
| Stoffklassen | Flammable agents - 3rd degree |
| SpringerMaterials Properties | Dielectric constant |
| Siedepunkt | 53°C |
| Dichte | 0.732 g/mL at 25 °C |
| Brechungsindex | n20/D 1.379 |
| Flammpunkt | −20 °F |
| Lagerbedingungen | 2-8°C |
| Löslichkeit | sol alcohol, ether, benzene, hexaneSlightly miscible with water. |
| Aggregatzustand | liquid |
| Farbe | Clear Yellow |
| BRN | 741882 |
| Dielektrizitätskonstante | 8.0500000000000007 |
| InChI | InChI=1S/C4H6O/c1-3-5-4-2/h1H,4H2,2H3 |
| InChIKey | WMYNMYVRWWCRPS-UHFFFAOYSA-N |
| SMILES | C#COCC |
| CAS Datenbank | 927-80-0(CAS DataBase Reference) |
| NIST chemische Informationen | Ethoxyacetylene(927-80-0) |
Sicherheit & Vorschriften
| GHS-Einstufung | DangerH225 (100%): Highly Flammable liquid and vapor [Danger Flammable liquids]P203, P210, P233, P240, P241, P242, P243, P260, P261, P264, P271, P273, P280, P301+P316, P302+P352, P303+P361+P353, P304+P340, P318, P319, P321, P331, P332+P317, P362+P364, P370+P378, P391, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 46 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies. |
|---|---|
| Regulatorische Informationen | Ethyne, ethoxy-: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.) |
| Hazard Classes and Categories | Flam. Liq. 2 (100%)Flammable agents - 3rd degree, Reactive agents - 3rd degree |
| Wassergefährdungsklasse (WGK) | 3 |
| UN-Transportnummer | UN 1993 3/PG 2 |
| Zollcode | 29091990 |
| RTECS-Nr. | KN9900000 |
| R-Sätze (R) | 11-38-48/20-51/53-62-65-67-36/37/38-36/38 |
| Gefahrensymbole | F,Xn,N |
| hazard_note | Highly Flammable/Keep Cold |
| Sicherheitshinweise (S) | 16-36/37-61-62-45-36/37/39-26-33-29-9 |
| Gefahrenklasse | 3Aquatic Chronic 2Asp. Tox. 1Flam. Liq. 2Repr. 2Skin Irrit. 2STOT RE 2 InhalationSTOT SE 3 |
| Verpackungsgruppe | II |
| Lagerklasse | 3 - Flammable liquids |
Anwendungen & Verwendung
Verwenden
Ethoxyacetylene is used in Arens-van Dorp synthesis to prepare propargyl alcohol via reaction with ketone. In organic synthesis, it undergoes [2+2] cycloaddition reactions with ketenes to give cyclobutenone derivatives. It is also used to prepare alpha, beta-unsaturated esters from ketones by following Meyer-Schuster rearrangement.Used with N-vinylamides and triflic anhydride in a direct, three-component synthesis of pyridines. Also used to prepare α, β-unsaturated esters from ketones via a Meyer-Schuster rearrangement.
Herstellung & Synthese
synthetische
Ethoxyethyne can be prepared from chloroacetaldehyde diethyl acetal (70%).