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Ethenon
Keten · ethenone · carbometene · Ethen-1-one · Carbomethene · ketene ISO 9001：2015 REACH
Identifikatoren & physikalische Daten
| CAS No. | 12071-23-7 |
|---|---|
| Summenformel | C2H2O |
| Durchschnittliche Molmasse | 42,04 g/mol |
| Monoisotopische Masse | 42,01056468 g/mol |
| SMILES | C=C=O |
| InChIKey | CCGKOQOJPYTBIH-UHFFFAOYSA-N |
| PubChem CID | 10038 |
| ChEBI | CHEBI:48003 |
| EC No. | 207-336-9 |
| DTXSID | DTXSID1052113 |
| Lokaler Name | Ethenon |
Chemische & physikalische Eigenschaften
| XLogP | 0,8 |
|---|---|
| Polarare Oberfläche (TPSA) | 17,1 |
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 1 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 3 |
| Formalladung | 0 |
| Komplexität | 25,8 |
| Stoffklassen | Toxic Gases & Vapors -> Other Toxic Gases & VaporsFlammable agents - 3rd degree |
| SpringerMaterials Properties | Coriolis coupling |
| Geruch | PENETRATING ODORPenetrating odor. |
| Geschmack | DISAGREEABLE TASTE |
| Dichte | 1.45(relative gas density)0.6600 |
| Color/Form | COLORLESS GASColorless gas. |
| Löslichkeit | Reacts with water (NIOSH, 2024)SLIGHTLY SOL IN ETHERFairly sol in acetoneSolubility in water: reaction |
| Flammpunkt | Flammable gasNA (Gas) |
| Siedepunkt | -69 °F at 760 mmHg (NIOSH, 2024)-56 °C-49.8 °C @760 [mm Hg]bp -56° |
| Schmelzpunkt | -238 °F (NIOSH, 2024)-150 °C-151 °C-150° |
| Dampfdichte | 1.45 (NIOSH, 2024) - Heavier than airwill sink (Relative to Air)1.45 (AIR= 1)Relative vapor density (air = 1): 1.4 |
| Dampfdruck | greater than 1 atm (NIOSH, 2024)1.04X10+4 mm Hg @ 25 °C /calculated from experimentally derived coefficients/750 [mm Hg] @-50 °C>1 atm |
| Brechungsindex | 1.3040 (estimate) |
| Aggregatzustand | Gas |
| EPA chemische Informationen | Ketene (463-51-4) |
Sicherheit & Vorschriften
| GHS-Einstufung | DangerH220 (100%): Extremely flammable gas [Danger Flammable gases]P203, P210, P222, P260, P261, P264, P264+P265, P271, P280, P284, P302+P352, P304+P340, P305+P354+P338, P316, P317, P319, P320, P321, P332+P317, P362+P364, P377, P381, P403, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 111 reports by companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.H220: Extremely flammable gas [Danger Flammable gases] |
|---|---|
| Regulatorische Informationen | Chemical: EthenoneKetene: 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.) |
| DOT-Kennzeichnung | Poison Inhalation Hazard Flammable Liquid |
| Brandgefahren | Excerpt from ERG Guide 131 [Flammable Liquids - Toxicpolymerization hazard]:Extremely flammable. Gas/air mixtures are explosive. |
| Gesundheitsgefahren | Excerpt from NIOSH Pocket Guide for Ketene: |
| Gefahrenübersicht | TLV Basis is pulmonary edema, lung damage, and eye irritation. Animal studies show that ketene is an inhalation irritant with toxicity similar to that of phosgene. [ACGIH] A severe irritant of the skin, eyes, and respiratory tract[CAMEO] Reacts violently with water producing acetic acidA skin, eye, and respiratory tract irritantInhalation may cause pulmonary edemaChronic or repeated exposure may cause emphysema and fibrosis[ICSC] Causes acute pulmonary edema, other changes in lungs, thorax, or respiration, convulsions, and dyspnea in lethal-concentration inhalation studies of rodents[RTECS] |
| Reaktive Gruppe | Ketones |
| Reactivity Alerts |
Anwendungen & Verwendung
Verwenden
For the conversion of higher acids into their anhydrides; for acetylation in the manufacture of cellulose acetate and aspirin.