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CAS Number: 27743-70-0Picture of molecule3D/inchi
Nikkaji Web:J370.542K
XlogP3-AA:2.70 (est)
Molecular Weight:140.22572000
Formula:C9 H16 O
NMR Predictor:Predict (works with chrome, Edge or firefox)
Category:flavoring agents
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Google Scholar:Search
Google Books:Search
Google Scholar: with word "volatile"Search
Google Scholar: with word "flavor"Search
Google Scholar: with word "odor"Search
Perfumer and Flavorist:Search
Google Patents:Search
US Patents:Search
EU Patents:Search
Pubchem Patents:Search
JECFA Food Flavoring:1844 (E)-2-nonen-4-one
FEMA Number:4301 trans-2-nonen-4-one
FDA:No longer provide for the use of these seven synthetic flavoring substances
FDA Mainterm (SATF):27743-70-0 ; TRANS-2-NONEN-4-ONE
Physical Properties:
Appearance:colorless to pale yellow clear liquid (est)
Assay: 95.00 to 100.00
Food Chemicals Codex Listed: No
Specific Gravity:0.85500 to 0.85900 @ 25.00 °C.
Pounds per Gallon - (est).: 7.114 to 7.148
Refractive Index:1.44300 to 1.44900 @ 20.00 °C.
Boiling Point: 200.00 to 201.00 °C. @ 760.00 mm Hg
Vapor Pressure:0.301000 mmHg @ 25.00 °C. (est)
Flash Point: 178.00 °F. TCC ( 81.11 °C. )
logP (o/w): 2.689 (est)
Soluble in:
 water, very slightly
 water, 349.5 mg/L @ 25 °C (est)
Insoluble in:
Organoleptic Properties:
Odor and/or flavor descriptions from others (if found).
Cosmetic Information:
None found
For experimental / research use only.
2-Nonen-4-one, (E)-
Chemical Sources Association
Need This Item for Flavor/Food?: You can contact the Chemical Sources Association
Safety Information:
Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
Not determined
Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined
Safety in Use Information:
flavoring agents
Recommendation for (E)-2-nonen-4-one usage levels up to:
 not for fragrance use.
Use levels for FEMA GRAS flavoring substances on which the FEMA Expert Panel based its judgments that the substances are generally recognized as safe (GRAS).
The Expert Panel also publishes separate extensive reviews of scientific information on all FEMA GRAS flavoring substances and can be found at FEMA Flavor Ingredient Library
publication number: 23
Click here to view publication 23
 average usual ppmaverage maximum ppm
baked goods: --
beverages(nonalcoholic): 1.0000010.00000
beverages(alcoholic): 2.0000010.00000
breakfast cereal: --
cheese: 2.000005.00000
chewing gum: 5.0000015.00000
condiments / relishes: 5.0000025.00000
confectionery froastings: 2.0000010.00000
egg products: --
fats / oils: --
fish products: --
frozen dairy: --
fruit ices: 1.000005.00000
gelatins / puddings: 2.0000010.00000
granulated sugar: --
gravies: --
hard candy: 2.0000010.00000
imitation dairy: --
instant coffee / tea: 2.0000010.00000
jams / jellies: --
meat products: --
milk products: 1.000005.00000
nut products: --
other grains: --
poultry: --
processed fruits: --
processed vegetables: --
reconstituted vegetables: --
seasonings / flavors: 50.000001000.00000
snack foods: 2.0000010.00000
soft candy: 2.0000010.00000
soups: --
sugar substitutes: 10.0000025.00000
sweet sauces: --
Safety References:
EPI System: View
AIDS Citations:Search
Cancer Citations:Search
Toxicology Citations:Search
EPA ACToR:Toxicology Data
EPA Substance Registry Services (SRS):Registry
Laboratory Chemical Safety Summary :448996
National Institute of Allergy and Infectious Diseases:Data
NIST Chemistry WebBook:Search Inchi
Pubchem (cid):448996
Pubchem (sid):135232328
Other Information:
(IUPAC):Atomic Weights of the Elements 2011 (pdf)
Videos:The Periodic Table of Videos
tgsc:Atomic Weights use for this web site
(IUPAC):Periodic Table of the Elements
FDA Substances Added to Food (formerly EAFUS):View
HMDB (The Human Metabolome Database):HMDB35916
VCF-Online:VCF Volatile Compounds in Food
Potential Blenders and core components note
None Found
Potential Uses:
Occurrence (nature, food, other):note
 pepper bell pepper fruit
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2-nonen-4-one, (E)-


PubMed:New volatile sulfur-containing constituents in a simultaneous distillation-extraction extract of red bell peppers (Capsicum annuum).
PubMed:Copper-catalyzed enantioselective intramolecular conjugate addition/trapping reactions: synthesis of cyclic compounds with multichiral centers.
PubMed:Identification of character impact odorants of different soybean lecithins.
PubMed:Olfactory sensitivity of two sympatric species of rice leaf folders (Lepidoptera: Pyralidae) to plant volatiles.
Detected in bell pepper and potato volatiles
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