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HCID 20913Erstellt: 24. Oktober 2026

Crotononitril

CROTONONITRILE · CROTONITRILE · but-2-enenitrile · (2E)-2-Butenenitrile · trans-Crotononitrile · e (pract) · Crotonnitrile · CrotononitriL

https://huagongshe.com/de/chemical/20913

Molekülstruktur von Crotononitril

Identifikatoren & physikalische Daten

CAS No.4786-20-3
SummenformelC4H5N
Durchschnittliche Molmasse67,09 g/mol
Monoisotopische Masse67,04219916 g/mol
SMILESCC=CC#N
InChIKeyNKKMVIVFRUYPLQ-UHFFFAOYSA-N
PubChem CID20913
EC No.225-335-1
DTXSIDDTXSID0063604
Lokaler NameCrotononitril

Chemische & physikalische Eigenschaften

XLogP0,8
Polarare Oberfläche (TPSA)23,8
H-Brücken-Donoren0
H-Brücken-Akzeptoren1
Frei drehbare Bindungen0
Schwere Atome5
Formalladung0
Komplexität72,9
StoffklassenNitrogen Compounds -> NitrilesFlammable agents - 3rd degree
SpringerMaterials PropertiesBoiling point
Flammpunkt16 °C17 °C
Dampfdruck32.0 [mmHg]
Physical DescriptionSoluble in water (25 g/L at 25 deg C)[ChemIDplus] Slightly yellow clear liquid[MSDSonline]
Schmelzpunkt-51.5°C
Siedepunkt120-121 °C(lit.)
Dichte0.824 g/mL at 25 °C(lit.)
Brechungsindexn20/D 1.419(lit.)
LagerbedingungenFlammables area
Aggregatzustandliquid
BRN1719747
Henry-Konstante8.8×10-2 mol/(m3Pa) at 25℃, Duchowicz et al. (2020)
InChIInChI=1S/C4H5N/c1-2-3-4-5/h2-3H,1H3
InChIKeyNKKMVIVFRUYPLQ-UHFFFAOYSA-N
SMILESC(#N)C=CC
CAS Datenbank4786-20-3(CAS DataBase Reference)
EPA chemische Informationen2-Butenenitrile (4786-20-3)

Sicherheit & Vorschriften

GHS-EinstufungDangerH225 (99.5%): Highly Flammable liquid and vapor [Danger Flammable liquids]P203, P210, P233, P240, P241, P242, P243, P260, P261, P264, P264+P265, P270, P271, P280, P301+P316, P301+P317, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P308+P316, P316, P317, P318, P319, P321, P330, 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 209 reports by companies from 7 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Regulatorische InformationenStatus: Active Update: 05-05-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/25843Crotonic acid nitrile: Does not have an individual approval but may be used under an appropriate group standardThe 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.)
GefahrenübersichtCorrosive to skin and eyes[eChemPortal: ERMA] A corrosive substance that can cause injury to the skin, eyes, and respiratory tractCauses lacrimation and may cause chemical pneumonitis and pulmonary edema after inhalation of high concentrationsMay cause liver injury[MSDSonline] See NITRILES.
Hazard Classes and CategoriesFlam. Liq. 2 (99.5%)Flammable agents - 3rd degree, Reactive agents - 1st degree
Unerwünschte WirkungenOccupational hepatotoxin - Secondary hepatotoxins: the potential for toxic effect in the occupational setting is based on cases of poisoning by human ingestion or animal experimentation.
Wassergefährdungsklasse (WGK)3
TSCA-Inventar-StatusTSCA listed
UN-TransportnummerUN 2924 3/PG 2
Zollcode29269090
RTECS-Nr.GQ6322000
R-Sätze (R)11-22-36/37/38-26-16
GefahrensymboleF,Xn
Sicherheitshinweise (S)16-26-36
Gefahrenklasse3.1Acute Tox. 4 OralEye Irrit. 2Flam. Liq. 2Skin Irrit. 2STOT SE 3
VerpackungsgruppeII
Lagerklasse3 - Flammable liquids