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HCID 21244Erstellt: 27. Oktober 2026

5-Methyl-3-hexen-2-on

5-Methyl-3-hexene-2-one · FEMA 3409 · filbert hexenone · 3-Hexen-2-one, 5-Me · 5-methyl-3-hexen-2-on · 3-HEXAN-2-ONE,5-METHYL · 5-METHYLHEX-3-EN-2-ONE · 5-Methyl-3-hexen-2-one

https://huagongshe.com/de/chemical/21244

Molekülstruktur von 5-Methyl-3-hexen-2-on

Identifikatoren & physikalische Daten

CAS No.5166-53-0
SummenformelC7H12O
Durchschnittliche Molmasse112,17 g/mol
Monoisotopische Masse112,088815 g/mol
SMILESCC(=O)C=CC(C)C
InChIKeyIYMKNYVCXUEFJE-UHFFFAOYSA-N
PubChem CID21244
EC No.225-950-5
DTXSIDDTXSID1063726
Lokaler Name5-Methyl-3-hexen-2-on

Chemische & physikalische Eigenschaften

XLogP1,5
Polarare Oberfläche (TPSA)17,1
H-Brücken-Donoren0
H-Brücken-Akzeptoren1
Frei drehbare Bindungen2
Schwere Atome8
Formalladung0
Komplexität101
Dichte0.838-0.8430.85 g/mL at 25 °C (lit.)
Löslichkeitinsoluble in waterMiscible at room temperature (in ethanol)
Siedepunkt77.5 °C (50 mm Hg)157°C
Brechungsindex1.437-1.441n20/D 1.44(lit.)
Physical Descriptionclear colourless liquidpungent metalic odour
FEMA3409 | 5-METHYL-3-HEXEN-2-ONE
Flammpunkt118 °F
LagerbedingungenStorage temp. 2-8°C
Aggregatzustandclear liquid
FarbeColorless to Light yellow to Light orange
Geruchat 100.00 %. sweet berry cheese
Geruchsartfruity
JECFA Number1132
InChI1S/C7H12O/c1-6(2)4-5-7(3)8/h4-6H,1-3H3/b5-4+
InChIKeyIYMKNYVCXUEFJE-SNAWJCMRSA-N
SMILESCC(C)\C=C\C(C)=O
LogP (Verteilungskoeffizient)1.44
CAS Datenbank5166-53-0(CAS DataBase Reference)
EPA chemische Informationen3-Hexen-2-one, 5-methyl- (5166-53-0)

Sicherheit & Vorschriften

GHS-EinstufungDangerH226 (100%): Flammable liquid and vapor [Warning Flammable liquids]H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]H311 (100%): Toxic in contact with skin [Danger Acute toxicity, dermal]H319 (85.5%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]H331 (85.5%): Toxic if inhaled [Danger Acute toxicity, inhalation]H332 (12.9%): Harmful if inhaled [Warning Acute toxicity, inhalation]P210, P233, P240, P241, P242, P243, P261, P262, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P316, P317, P321, P330, P337+P317, P361+P364, P370+P378, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 303 reports by companies from 4 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 InformationenCommission Regulation (EC) No 1565/2000 (Repealed by Com. Implementing Reg. (EU) No 872/2012)
Hazard Classes and CategoriesFlam. Liq. 3 (100%)Acute Tox. 4 (100%)Acute Tox. 3 (100%)Eye Irrit. 2 (85.5%)Acute Tox. 3 (85.5%)Acute Tox. 4 (12.9%)
Wassergefährdungsklasse (WGK)3
TSCA-Inventar-StatusTSCA listed
UN-TransportnummerUN 1992 3/PG 3
Zollcode2914199090
RTECS-Nr.MP8750000
R-Sätze (R)10-20/21/22-24-20/22
Gefahrensymbole

Anwendungen & Verwendung

Occurrence

Reported found in roasted filberts, green tea, cooked and roasted shrimp.

Verwenden

5-Methyl-3-hexen-2-one was used in combinatorial synthesis of mercaptoketones and mercaptoalcohols.

Xn,T
Sicherheitshinweise (S)16-27-36/37/39-45-36/37
Gefahrenklasse3Acute Tox. 3 DermalAcute Tox. 4 InhalationAcute Tox. 4 OralFlam. Liq. 3
VerpackungsgruppeIII
Lagerklasse3 - Flammable liquids