2-butyl-5- or 6-keto-1,4-dioxane
5 or 6-butyl-1,4-dioxan-2-one
 
Notes:
None found
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CAS Number: 65504-45-2 
Molecular Weight: 158.19718000
Formula: C8 H14 O3
Also Contains: 5(or 6)-butyl-1,4-dioxan-2-one
EFSA/JECFA Comments: JECFA CASrn: 65504-95-2 does not specify stereoisomers. CASrn in Register to be changed. Mixture of 5-butyl- and 6-butyl-1,4-dioxane-2-one: 65% 5- and 32 % 6-isomer (sum isomers > 95%). Racemate (EFFA, 2010a). Change CASrn to 65504-95-2.
Category: flavoring agents
 
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
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FEMA Number: 2204 2-butyl-5- or 6-keto-1,4-dioxane
FDA:No longer provide for the use of these seven synthetic flavoring substances
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Physical Properties:
Appearance: colorless clear liquid (est)
Assay: 97.00 to 100.00 % sum of isomers
Food Chemicals Codex Listed: No
Specific Gravity: 1.29200 to 1.29600 @  25.00 °C.
Pounds per Gallon - (est).: 10.751 to 10.784
Refractive Index: 1.47200 to 1.47800 @  20.00 °C.
Boiling Point: 98.00 to  99.00 °C. @ 13.00 mm Hg
Soluble in:
 alcohol
 water, slightly
Insoluble in:
 water
Similar Items: note
2-amyl-5 or 6-keto-1,4-dioxane
2-hexyl-5 or 6-keto-1,4-dioxane
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Organoleptic Properties:
Odor Strength: high ,
recommend smelling in a 1.00 % solution or less
 
Odor Description:
at 1.00 % in dipropylene glycol. 
fruity
 
Odor and/or flavor descriptions from others (if found).
 
 
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Cosmetic Information:
None found
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Suppliers:
Parchem
2-Butyl-5- or 6-keto-1,4-dioxane
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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
 
Pictogram
 
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
Not determined
Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined
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Safety in Use Information:
Category: flavoring agents
Recommendation for 2-butyl-5- or 6-keto-1,4-dioxane usage levels up to:
 not for fragrance use.
 
Maximised Survey-derived Daily Intakes (MSDI-EU): 0.43 (μg/capita/day)
Maximised Survey-derived Daily Intakes (MSDI-USA): 0.50 (μg/capita/day)
Structure Class: III
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: 3
Click here to view publication 3
 average usual ppmaverage maximum ppm
baked goods: --
beverages(nonalcoholic): --
beverages(alcoholic): --
breakfast cereal: --
cheese: --
chewing gum: --
condiments / relishes: --
confectionery froastings: --
egg products: --
fats / oils: -5.00000
fish products: --
frozen dairy: -5.00000
fruit ices: -5.00000
gelatins / puddings: --
granulated sugar: --
gravies: --
hard candy: -5.00000
imitation dairy: --
instant coffee / tea: --
jams / jellies: --
meat products: --
milk products: --
nut products: --
other grains: --
poultry: --
processed fruits: --
processed vegetables: --
reconstituted vegetables: --
seasonings / flavors: --
snack foods: --
soft candy: --
soups: --
sugar substitutes: --
sweet sauces: --
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Safety References:
European Food Safety Athority(efsa): Flavor usage levels; Subacute, Subchronic, Chronic and Carcinogenicity Studies; Developmental / Reproductive Toxicity Studies; Genotoxicity Studies...
European Food Safety Authority (EFSA) reference(s):
Flavouring Group Evaluation 83, (FGE.83) [1] - Consideration of 6-keto-1,4-dioxane derivatives substances evaluated by JECFA (65th meeting) - Scientific Opinion of the Panel on Food Additives, Flavourings, Processing Aids and Materials in Contact with Food
View page or View pdf
Scientific Opinion on Flavouring Group Evaluation 83, Revision 1 (FGE.83Rev1): Consideration of ethyl maltol and two 6-keto-1,4-dioxane derivatives substances evaluated by JECFA (65th meeting)
View page or View pdf
Scientific Opinion on Flavouring Group Evaluation 96 (FGE.96): Consideration of 88 flavouring substances considered by EFSA for which EU production volumes / anticipated production volumes have been submitted on request by DG SANCO. Addendum to FGE. 51, 52, 53, 54, 56, 58, 61, 62, 63, 64, 68, 69, 70, 71, 73, 76, 77, 79, 80, 83, 84, 85 and 87.
View page or View pdf
EPA ACToR: Toxicology Data
EPA Substance Registry Services (SRS): Registry
National Institute of Allergy and Infectious Diseases: Data
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References:
Pubchem (cas): 65504-45-2
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Other Information:
HMDB (The Human Metabolome Database): HMDB59939
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Potential Blenders and core components note
 
For Odor
caramellic
 maltyl isobutyrateFL/FR
earthy
 octyl phenyl acetateFL/FR
floral
 bois de rose oil brazilFL/FR
 citronellyl acetateFL/FR
 coranol (Firmenich)FR
 dihydrolinaloolFL/FR
3,6-dimethyl-3-octanolFL/FR
 ethyl linaloolFR
 ethyl linalyl acetalFR
 ethyl linalyl acetateFR
 ethyl linalyl etherFL/FR
 linaloolFL/FR
dextro-linaloolFL/FR
laevo-linaloolFL/FR
 linalool oxideFL/FR
 linalyl anthranilateFL/FR
 phenethyl acetateFL/FR
 tetrahydrolinaloolFL/FR
isoamyl propionateFL/FR
 geranyl methyl tiglate 
 propyl isobutyrateFL/FR
 tropical indeneFR
 tropical iononeFL/FR
 tropical thiazoleFL/FR
green
 ethyl (E,Z)-2,4-decadienoateFL/FR
 heptanal dimethyl acetalFL/FR
1-penten-3-olFL/FR
herbal
 viridiflorolFL/FR
spicy
 cubeb oilFL/FR
sulfurous
 buchu mercaptanFL/FR
 cassis pentanoneFL/FR
 passiflora acetateFL/FR
tropical
 tropical 3-thiobutyrateFL/FR
yeasty
2-octen-4-oneFL/FR
 
For Flavor
 
No flavor group found for these
isoamyl 3-methyl thiopropionateFL
 ethyl 3-octenoateFL
 ethyl linalyl etherFL/FR
dextro-linaloolFL/FR
 octyl phenyl acetateFL/FR
 viridiflorolFL/FR
alliaceous
 tropical thiazoleFL/FR
citrus
 linaloolFL/FR
laevo-linaloolFL/FR
floral
 bois de rose oil brazilFL/FR
 citronellyl acetateFL/FR
 dihydrolinaloolFL/FR
 linalyl anthranilateFL/FR
 tetrahydrolinaloolFL/FR
 tropical iononeFL/FR
fruity
isoamyl propionateFL/FR
 geranyl methyl tiglate 
 propyl isobutyrateFL/FR
green
 cassis pentanoneFL/FR
 ethyl (E,Z)-2,4-decadienoateFL/FR
 heptanal dimethyl acetalFL/FR
 linalool oxideFL/FR
1-penten-3-olFL/FR
herbal
3,6-dimethyl-3-octanolFL/FR
honey
 phenethyl acetateFL/FR
jammy
 maltyl isobutyrateFL/FR
spicy
 cubeb oilFL/FR
sulfurous
 buchu mercaptanFL/FR
 methyl 2-(methyl thio) butyrateFL
 methyl thiomethyl butyrateFL
 tropical 3-thiobutyrateFL/FR
tropical
 passiflora acetateFL/FR
vegetable
2-octen-4-oneFL/FR
 
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Potential Uses:
 fruitFR
 fruit tropical fruitFL
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Occurrence (nature, food, other): note
 not found in nature
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Synonyms:
5 or 6-butyl-1,4-dioxan-2-one
2-butyl-5 or 6-keto-1,4-dioxane
2-butyl-5(6)-keto-1,4-dioxane
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