Identifikatoren & physikalische Daten
| CAS No. | 503-17-3 |
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| Summenformel | C4H6 |
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| Durchschnittliche Molmasse | 54,09 g/mol |
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| Monoisotopische Masse | 54,04695019 g/mol |
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| SMILES | CC#CC |
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| InChIKey | XNMQEEKYCVKGBD-UHFFFAOYSA-N |
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| PubChem CID | 10419 |
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| ChEMBL | CHEMBL119108 |
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| EC No. | 207-962-2 |
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| DTXSID | DTXSID3060116 |
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Chemische & physikalische Eigenschaften
| XLogP | 1,5 |
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| Polarare Oberfläche (TPSA) | 0 |
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| H-Brücken-Donoren | 0 |
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| H-Brücken-Akzeptoren | 0 |
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| Frei drehbare Bindungen | 0 |
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| Schwere Atome | 4 |
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| Formalladung | 0 |
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| Komplexität | 42,9 |
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| Stoffklassen | Other Classes -> Aliphatics, UnsaturatedFlammable agents - 4th degree |
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| SpringerMaterials Properties | Dunham energy parameter |
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| LogP (Verteilungskoeffizient) | 1.46 |
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| Flammpunkt | -4 °F (NFPA, 2010) |
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| Dampfdruck | 706.0 [mmHg] |
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| Physical Description | Crotonylene appears as a clear colorless liquid with a petroleum-like odor. Less dense than water and insoluble in water. Vapors heavier than air.Clear colorless liquid with an odor of petroleum[CAMEO] |
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| Schmelzpunkt | -32.3 °C |
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| Siedepunkt | 26.9 °C |
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| Dichte | 0.715 g/cm3(Temp: 0 °C) |
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Sicherheit & Vorschriften
| GHS-Einstufung | DangerH224 (100%): Extremely flammable liquid and vapor [Danger Flammable liquids]P210, P233, P240, P241, P242, P243, P261, P264, P264+P265, P271, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P370+P378, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 76 reports by companies from 9 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies. |
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| Regulatorische Informationen | Chemical: 2-ButyneThe 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.) |
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| Weitere Sicherheitsinformationen | IMAP assessments - 2-Butyne: Human health tier I assessment |
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| DOT-Kennzeichnung | Flammable Liquid |
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| Brandgefahren | Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:· HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. |
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| Gesundheitsgefahren | Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:CAUTION: Petroleum crude oil (UN1267) may contain TOXIC hydrogen sulphide gas. |
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| Gefahrenübersicht | Highly flammable[CAMEO] Extremely flammableAn irritant[MSDSonline] See Methylacetylene. |
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| DOT-Nummer und Handbuch | 1144 128 |
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| Reaktive Gruppe | Hydrocarbons, Aliphatic Unsaturated |
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| Reactivity Alerts | Highly Flammable |
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| Reactivity Profile | CROTONYLENE may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release hydrogen gas. In the presence of various catalysts (such as acids) or initiators, may undergo exothermic addition polymerization reactions. |
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