4-hydroxy-2,5-dimethyl thiophen-3(2H)-one
3(2H)-thiophenone, 4-hydroxy-2,5-dimethyl-
 
Notes:
None found
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CAS Number: 26494-10-0Picture of molecule3D/inchi
ECHA EINECS - REACH Pre-Reg: 247-742-3
FDA UNII: E9814L6CJM
Nikkaji Web: J248.954F
XlogP3-AA: 1.20 (est)
Molecular Weight: 144.19316000
Formula: C6 H8 O2 S
NMR Predictor: Predict (works with chrome or firefox)
EFSA/JECFA Comments: CASrn in Register does not specify isomer. Racemate (EFFA, 2010a). Substance not supported by Industry (EFFA,2009c). No longer supported by Industry (EFSA, 2011). Racemate (EFFA, 2010).
Category: information only not used for fragrances or flavors
 
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Google Scholar: Search
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Perfumer and Flavorist: Search
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Physical Properties:
Assay: 95.00 to 100.00 % 
Food Chemicals Codex Listed: No
Melting Point: 133.00 °C. @ 760.00 mm Hg
Boiling Point: 296.00 °C. @ 760.00 mm Hg
Vapor Pressure: 0.003000 mmHg @ 25.00 °C. (est)
Flash Point: 222.00 °F. TCC ( 105.56 °C. )
logP (o/w): 1.447 (est)
Soluble in:
 alcohol
 water, 8984 mg/L @ 25 °C (est)
Insoluble in:
 water
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Organoleptic Properties:
 
Odor Type: meaty
 
 meaty  bready  
Odor Description:
at 0.10 % in propylene glycol. 
meaty bready
 
Odor and/or flavor descriptions from others (if found).
 
 
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Cosmetic Information:
None found
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Suppliers:
Chemical Sources Association
Need This Item for Flavor/Food?: You can contact the CSA
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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: information only not used for fragrances or flavors
Recommendation for 4-hydroxy-2,5-dimethyl thiophen-3(2H)-one usage levels up to:
 not for fragrance use.
 
Maximised Survey-derived Daily Intakes (MSDI-EU): 0.12 (μg/capita/day)
Modified Theoretical Added Maximum Daily Intake (mTAMDI): 78 (μg/person/day)
Threshold of Concern:90 (μg/person/day)
Structure Class: III
 
Food categories according to Commission Regulation EC No. 1565/2000 (EC, 2000) in FGE.06 (EFSA, 2002a). According to the Industry the "normal" use is defined as the average of reported usages and "maximum use" is defined as the 95th percentile of reported usages (EFSA, 2002i).
Note: mg/kg = 0.001/1000 = 0.000001 = 1/1000000 = ppm.
 average usage mg/kgmaximum usage mg/kg
Dairy products, excluding products of category 02.0 (01.0): 0.200001.00000
Fats and oils, and fat emulsions (type water-in-oil) (02.0): 0.100000.50000
Edible ices, including sherbet and sorbet (03.0): 0.200001.00000
Processed fruit (04.1): 0.200001.00000
Processed vegetables (incl. mushrooms & fungi, roots & tubers, pulses and legumes), and nuts & seeds (04.2): --
Confectionery (05.0): 0.200001.00000
Chewing gum (05.0): --
Cereals and cereal products, incl. flours & starches from roots & tubers, pulses & legumes, excluding bakery (06.0): 0.100000.50000
Bakery wares (07.0): 0.200001.00000
Meat and meat products, including poultry and game (08.0): 0.100000.20000
Fish and fish products, including molluscs, crustaceans and echinoderms (MCE) (09.0): 0.100000.20000
Eggs and egg products (10.0): --
Sweeteners, including honey (11.0): --
Salts, spices, soups, sauces, salads, protein products, etc. (12.0): 0.100000.50000
Foodstuffs intended for particular nutritional uses (13.0): 0.200001.00000
Non-alcoholic ("soft") beverages, excl. dairy products (14.1): 0.100000.50000
Alcoholic beverages, incl. alcohol-free and low-alcoholic counterparts (14.2): 0.200001.00000
Ready-to-eat savouries (15.0): 0.400002.00000
Composite foods (e.g. casseroles, meat pies, mincemeat) - foods that could not be placed in categories 01.0 - 15.0 (16.0): 0.100000.50000
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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 21: Thiazoles, thiophene, thiazoline and thienyl derivatives from chemical group 29. Miscellaneous substances from chemical group 30. (Commission Regulation (EC) No 1565/2000 of 18 July 2000) - Opinion of the Scientific Panel on Food Additives, Flavourings, Processing Aids and Materials in contact with Food (AFC)
View page or View pdf
Flavouring Group Evaluation 76, (FGE.76)[1] - Consideration of sulphur-containing heterocyclic compounds evaluated by JECFA (59th meeting) structurally related to thiazoles, thiophene, thiazoline and thienyl derivatives from chemical group 29, miscellaneous substances from chemical group 30 evaluated by EFSA in FGE.21 - Scientific Opinion of the Panel on Food Additives, Flavourings, Processing Aids and Materials in Contact with Food
View page or View pdf
Flavouring Group Evaluation 21, Revision 1 (FGE.21Rev1): Thiazoles, thiophene, thiazoline and thienyl derivatives from chemical group 29 Miscellaneous substances from chemical group 30
View page or View pdf
Flavouring Group Evaluation 93 (FGE.93): Consideration of sulphur heterocyclic evaluated by JECFA (68th meeting) structurally related to thiazoles, thiophene, thiazoline and thienyl evaluated by EFSA in FGE.21Rev1 (2009)
View page or View pdf
Scientific Opinion on Flavouring Group Evaluation 21, Revision 2 (FGE.21Rev2): Thiazoles, thiophene, thiazoline and thienyl derivatives from chemical group 29. Miscellaneous substances from chemical group 30.
View page or View pdf
Scientific Opinion on Flavouring Group Evaluation 21, Revision 3 (FGE.21Rev3): Thiazoles, thiophenes, thiazoline and thienyl derivatives from chemical groups 29 and 30
View page or View pdf
Scientific Opinion on Flavouring Group Evaluation 21, Revision 4 (FGE.21Rev4): Thiazoles, thiophenes, thiazoline and thienyl derivatives from chemical groups 29 and 30
View page or View pdf
Scientific Opinion on Flavouring Group Evaluation 21, Revision 5 (FGE.21Rev5): Thiazoles, thiophenes, thiazoline and thienyl derivatives from chemical groups 29 and 30
View page or View pdf
EPI System: View
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EPA ACToR: Toxicology Data
EPA Substance Registry Services (SRS): Registry
Laboratory Chemical Safety Summary : 5743410
National Institute of Allergy and Infectious Diseases: Data
 4-hydroxy-2,5-dimethylthiophen-3-one
Chemidplus: 0026494100
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References:
 4-hydroxy-2,5-dimethylthiophen-3-one
NIST Chemistry WebBook: Search Inchi
Canada Domestic Sub. List: 26494-10-0
Pubchem (cid): 5743410
Pubchem (sid): 135268247
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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
HMDB (The Human Metabolome Database): Search
ChemSpider: View
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Potential Blenders and core components note
 
None Found
 
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Potential Uses:
None Found
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Occurrence (nature, food, other): note
 not found in nature
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Synonyms:
4-hydroxy-2,5-dimethyl thiophen-3-one
4-hydroxy-2,5-dimethyl-3(2H)-thiophenone
4-hydroxy-2,5-dimethylthiophen-3-one
4-hydroxy-2,5-dimethylthiophen-3(2H)-one
3(2H)-thiophenone, 4-hydroxy-2,5-dimethyl-
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