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General Material Information

Preferred name 2-methyl-5-methoxythiazole
Trivial Name 2-Methyl-5-methoxythiazole
Short Description thiazole, 5-methoxy-2-methyl-
Formula C5 H7 N O S
CAS Number 38205-64-0
FEMA Number 3192
Flavis Number 15.002
FDA UNII 154Z60090O
Nikkaji Number J59.611F
Beilstein Number 1209888
COE Number 736
xLogP3-AA 1.70 (est)
NMR Predictor External link
JECFA Food Flavoring 1057 2-methyl-5-methoxythiazole
FDA Patent No longer provide for the use of these seven synthetic flavoring substances
FDA Mainterm 38205-64-0 ; 2-METHYL-5-METHOXYTHIAZOLE
Synonyms
  • 5-methoxy-2-methyl thiazole
  • 5-methoxy-2-methyl-1,3-thiazole
  • 5-methoxy-2-methylthiazole
  • thiazole, 5-methoxy-2-methyl-
  • 5-methoxy-2-methyl-1,3-thiazole
  • 5-Methoxy-2-methylthiazole

US / EU / FDA / JECFA / FEMA / Scholar / Patents

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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
FDA Substances Added to Food (formerly EAFUS):View
HMDB (The Human Metabolome Database):HMDB37178
FooDB:FDB016176
Export Tariff Code:2934.10.0000
ChemSpider:View

PhysChem Properties

Material listed in food chemical codex No
Molecular weight 129.18199157715
Specific gravity @ 25 °C
Pounds per Gallon 9.536 to 9.602
Refractive Index 1.515 to 1.52 @ 20 °C
Vapor Pressure 1.085 mmHg @ 25 °C
Flash Point TCC Value 63.89 °C TCC
logP (o/w) 0.336 est
Solubility
alcohol Yes
water, 3822 mg/L @ 25 °C (est) Yes
water No

Organoleptic Properties

Odor Type: Sulfurous
green, cabbage, vegetable, sulfurous
General comment At 0.10 % in dipropylene glycol. green cabbage vegetable sulfurous

Potential Uses

Applications
Flavoring purposes Cabbage, Green, Vegetable

Safety Information

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:
oral-rat LD50 1250 mg/kg
(Posternak et al., 1975)

oral-rat LD50 1250 mg/kg
Food and Cosmetics Toxicology. Vol. 13, Pg. 487, 1975.

Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined

Safety in use information

Category:
flavoring agents
Recommendation for 2-methyl-5-methoxythiazole usage levels up to:
not for fragrance use.
Maximised Survey-derived Daily Intakes (MSDI-EU): 0.012 (μg/capita/day)
Maximised Survey-derived Daily Intakes (MSDI-USA): 0.01 (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: 4
Click here to view publication 4
average usual ppmaverage maximum ppm
baked goods: -4.00000
beverages(nonalcoholic): -2.00000
beverages(alcoholic): --
breakfast cereal: --
cheese: --
chewing gum: --
condiments / relishes: --
confectionery froastings: --
egg products: --
fats / oils: --
fish products: --
frozen dairy: --
fruit ices: --
gelatins / puddings: --
granulated sugar: --
gravies: --
hard candy: --
imitation dairy: --
instant coffee / tea: --
jams / jellies: --
meat products: -2.00000
milk products: --
nut products: --
other grains: --
poultry: --
processed fruits: --
processed vegetables: --
reconstituted vegetables: --
seasonings / flavors: --
snack foods: --
soft candy: --
soups: -2.00000
sugar substitutes: --
sweet sauces: --

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

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

Scientific Opinion on Flavouring Group Evaluation 76, Revision 1 (FGE.76Rev1): Consideration of sulphur-containing heterocyclic compounds evaluated by JECFA (59th meeting) structurally related to thiazoles, thiophene, thiazoline and thienyl derivatives from chemical group 29 and miscellaneous substances from chemical group 30 evaluated by EFSA in FGE.21Rev3
View page or View pdf

EPI System: View
AIDS Citations:Search
Cancer Citations:Search
Toxicology Citations:Search
EPA Substance Registry Services (TSCA):38205-64-0
EPA ACToR:Toxicology Data
EPA Substance Registry Services (SRS):Registry
Laboratory Chemical Safety Summary :61976
National Institute of Allergy and Infectious Diseases:Data
5-methoxy-2-methyl-1,3-thiazole
Chemidplus:0038205640