Grundinformationen
- Standard-SMILES
CC#CC- InChIKey
XNMQEEKYCVKGBD-UHFFFAOYSA-N- Summenformel
- C4H6
- Durchschnittliche Molmasse
- 54,09 g/mol
- Monoisotopische Masse
- 54,04695019
Überblick
Crotonylene appears as a clear colorless liquid with a petroleum-like odor. Less dense than water and insoluble in water. Vapors heavier than air.
Namen und Bezeichner
- Bevorzugter Name
- Dimethylacetylene
- IUPAC
- but-2-yne
- Englischer Name
- 2-Butyne
- Summenformel
- C4H6
- Molmasse
- 54.09
Namen und Synonyme
Dimethylacetylene4-butynebut-4-yneRefChem:860602-BUTYNEBut-2-yne503-17-3CrotonyleneUN1144UNII-LKE6D3018ELKE6D3018EEINECS 207-962-2
Weitere Namen anzeigen
MFCD0000927525684-85-9dimethyl acetylene2-BUTINE2-Butyne, 99%SCHEMBL3561SCHEMBL18681SCHEMBL51760
Datenbank-Bezeichner
- CAS
503-17-3- PubChem CID
- 10419
- DTXSID
DTXSID3060116- ChEMBL
CHEMBL119108- UNII
- LKE6D3018E
- EC Number
- 207-962-2
- Nikkaji
- J2.603D
Eigenschaften
Berechnete Struktureigenschaften
- XLogP
- 1,5
- Polarare Oberfläche (TPSA)
- 0 Ų
- H-Brücken-Donoren
- 0
- H-Brücken-Akzeptoren
- 0
- Frei drehbare Bindungen
- 0
- Schwere Atome
- 4
- Formalladung
- 0
- Komplexität
- 42,9
Experimentelle und physikochemische Eigenschaften
Chemical Classes
Other Classes -> Aliphatics, Unsaturated
Flammable agents - 4th degree
SpringerMaterials PropertiesDunham energy parameter
LogP1.46
Flash Point-4 °F (NFPA, 2010)
Vapor Pressure706.0 [mmHg]
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]
Physikochemische Eigenschaften
- Schmelzpunkt
- -32.3 °C · -32.3 °C
- Siedepunkt
- 26.9 °C · 26.9 °C
- Dichte
- 0.715 g/cm3 · 0.715 g/cm3(Temp: 0 °C)
Sicherheit und Regulatorisches
GHS-Klassifizierung
GHS Classification
Danger
H224 (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.
Gefahrenhinweise
Regulatory Information
Chemical: 2-Butyne
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.)
Other Safety InformationIMAP assessments - 2-Butyne: Human health tier I assessment
DOT LabelFlammable Liquid
Fire Hazards
Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:
· HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
Health Hazards
Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:
CAUTION: Petroleum crude oil (UN1267) may contain TOXIC hydrogen sulphide gas.
Hazards SummaryHighly flammable; [CAMEO] Extremely flammable; An irritant; [MSDSonline] See Methylacetylene.
DOT ID and Guide1144 128
Reactive GroupHydrocarbons, Aliphatic Unsaturated
Reactivity AlertsHighly Flammable
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.
DOT Hazard Classification
Crotonylene
UN1144
Class 3 Flammable and combustible liquid (49 eCFR § 173.120)
PG I: the degree of danger presented by the material is great
Air and Water ReactionsHighly flammable. Insoluble in water.
Sicherheit und Schutzausrüstung
Fire FightingExcerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:
Accidental Release Measures
· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.
· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.
First Aid
Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:
General First Aid:
Exposure Control and Personal Protection· Wear positive pressure self-contained breathing apparatus (SCBA).
Nonfire Spill ResponseExcerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:
Isolation and Evacuation
Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:
Immediate precautionary measure
Personal Protective Equipment (PPE)Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:
Emergency Response Planning GuidelinesCAUTION: The majority of these products have a very low flash point. Use of water spray when fighting fire may be inefficient.
Toxikologische Informationen
Adverse EffectsNeurotoxin - Acute solvent syndrome
Sicherheitsdaten
- Alarmwort
- Achtung
- Gefahrenhinweise
- Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code H224
Chemie und Industrie
Verwendung und Herstellung
General Manufacturing Information2-Butyne: ACTIVE
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