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HCID 29935Erstellt: 26. Oktober 2026

2-Methyl-2-butennitril

Ccris 6055 · 2-CYANO-2-BUTENE · Einecs 224-544-5 · 2-methylcrotononitrile · 2-methyl-crotononitril · 2-methyl-2-butenenitril · 2-Methylbut-2-enenitrile · 2-Methyl-2-butenenitrile

https://huagongshe.com/de/chemical/29935

Molekülstruktur von 2-Methyl-2-butennitril

Identifikatoren & physikalische Daten

CAS No.4403-61-6
SummenformelC5H7N
Durchschnittliche Molmasse81,12 g/mol
Monoisotopische Masse81,05784923 g/mol
SMILESCC=C(C)C#N
InChIKeyIHXNSHZBFXGOJM-UHFFFAOYSA-N
PubChem CID29935
EC No.224-544-5
DTXSIDDTXSID0025577
Lokaler Name2-Methyl-2-butennitril

Chemische & physikalische Eigenschaften

XLogP1,2
Polarare Oberfläche (TPSA)23,8
H-Brücken-Donoren0
H-Brücken-Akzeptoren1
Frei drehbare Bindungen0
Schwere Atome6
Formalladung0
Komplexität102
Dichte0.817 at 65.3 °F (NTP, 1992) - Less dense than waterwill float0.810 g/mL at 20 °C(lit.)
Löslichkeitless than 1 mg/mL at 72 °F (NTP, 1992)Slightly soluble in water
Flammpunktless than 67 °F (NTP, 1992)-17 °C
Dampfdruck74.3 mmHg at 75 °F148.2 mmHg at 111 °F293.8 mmHg at 149 °F (NTP, 1992)
Physical Description2-methyl-2-butenenitrile is a clear amber liquid. (NTP, 1992)
Siedepunkt115-120 °C(lit.)
Brechungsindexn20/D 1.417
Aggregatzustandclear liquid
FarbeColorless to Light yellow
InChIInChI=1S/C5H7N/c1-3-5(2)4-6/h3H,1-2H3
InChIKeyIHXNSHZBFXGOJM-UHFFFAOYSA-N
SMILESC(#N)C(C)=CC
CAS Datenbank4403-61-6
EPA chemische Informationen2-Methyl-2-butenenitrile (4403-61-6)

Sicherheit & Vorschriften

GHS-EinstufungDangerH225 (100%): Highly Flammable liquid and vapor [Danger Flammable liquids]H301 (100%): Toxic if swallowed [Danger Acute toxicity, oral]H332 (97.5%): Harmful if inhaled [Warning Acute toxicity, inhalation]P210, P233, P240, P241, P242, P243, P261, P264, P270, P271, P280, P301+P316, P303+P361+P353, P304+P340, P317, P321, P330, P370+P378, P403+P235, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 40 reports by companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.
Regulatorische InformationenChemical: 2-Butenenitrile, 2-methyl-
DOT-KennzeichnungFlammable Liquid Poison
BrandgefahrenThis chemical is flammable. (NTP, 1992)
GesundheitsgefahrenExcerpt from ERG Guide 131 [Flammable Liquids - Toxic]:may be fatal if inhaled, ingested or absorbed through skin. Inhalation or contact with some of these materials will irritate or burn skin and eyes. Methyl chloroacetate (UN2295) is an eye irritant/lachrymator (causes flow of tears). Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or asphyxiation, especially when in closed or confined areas. Runoff from fire control or dilution water may cause environmental contamination. (ERG, 2024)
Reaktive GruppeNitrilesHydrocarbons, Aliphatic Unsaturated
Reactivity AlertsHighly Flammable
Reactivity ProfileNitriles, such as 2-METHYL-2-BUTENENITRILE, may polymerize in the presence of metals and some metal compounds. They are incompatible with acidsmixing nitriles with strong oxidizing acids can lead to extremely violent reactions. Nitriles are generally incompatible with other oxidizing agents such as peroxides and epoxides. The combination of bases and nitriles can produce hydrogen cyanide. Nitriles are hydrolyzed in both aqueous acid and base to give carboxylic acids (or salts of carboxylic acids). These reactions generate heat. Peroxides convert nitriles to amides. Nitriles can react vigorously with reducing agents. Acetonitrile and propionitrile are soluble in water, but nitriles higher than propionitrile have low aqueous solubility. They are also insoluble in aqueous acids.
Air and Water ReactionsHighly flammable. This chemical may be sensitive to prolonged exposure to air. (NTP, 1992). Insoluble in water.
Hazard Classes and CategoriesFlam. Liq. 2 (100%)Acute Tox. 3 (100%)Acute Tox. 4 (97.5%)
BrandbekämpfungFires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher. (NTP, 1992)
Erste HilfeEYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.INHALATION: IMMEDIATELY leave the contaminated areatake deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be usedif not available, use a level of protection greater than or equal to that advised under Protective Clothing.INGESTION: DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital. (NTP, 1992)
Freisetung ohne BrandSMALL SPILLS AND LEAKAGE: If you spill this chemical, FIRST REMOVE ALL SOURCES OF IGNITION. Then, use absorbent paper to pick up all liquid spill material. Your contaminated clothing and absorbent paper should be sealed in a vapor-tight plastic bag for eventual disposal. Solvent wash all contaminated surfaces with 60-70% ethanol followed by washing with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.STORAGE PRECAUTIONS: You should keep this material in a tightly-closed container under an inert atmosphere, and store it in an explosion-proof freezer. STORE AWAY FROM SOURCES OF IGNITION. (NTP, 1992)
Isolation and EvacuationExcerpt from ERG Guide 131 [Flammable Liquids - Toxic]:IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area for at least 50 meters (150 feet) in all directions.SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.FIRE: If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directionsalso, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2024)
Personal Protective Equipment (PPE)RECOMMENDED RESPIRATOR: Where the neat test chemical is weighed and diluted, wear a NIOSH-approved half face respirator equipped with an organic vapor/acid gas cartridge (specific for organic vapors, HCl, acid gas and SO2) with a dust/mist filter. (NTP, 1992)
Wassergefährdungsklasse (WGK)3
UN-TransportnummerUN 3273 3/PG 2
Zollcode2926.90.5050
RTECS-Nr.EM8312500
R-Sätze (R)11-20/22
GefahrensymboleF,Xn
Sicherheitshinweise (S)16-23-36/37
Gefahrenklasse3.1
VerpackungsgruppeI