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General Material Information

Preferred name 2,4,5-trimethyl thiazole
Trivial Name 2,4,5-Trimethylthiazole
Short Description 2,4,5-trimethylthiazole
Formula C6 H9 N S
CAS Number 13623-11-5
FEMA Number 3325
Flavis Number 15.019
ECHA Number 237-107-9
FDA UNII 6393273PE0
Nikkaji Number J40.173K
MDL MFCD00005332
COE Number 11650
xLogP3-AA 2.20 (est)
Bio Activity Summary External link
NMR Predictor External link
JECFA Food Flavoring 1036 2,4,5-trimethylthiazole
FDA Patent No longer provide for the use of these seven synthetic flavoring substances
FDA Mainterm 13623-11-5 ; 2,4,5-TRIMETHYLTHIAZOLE
Synonyms
  • thiazole, 2,4,5-trimethyl-
  • trimethyl thiazole
  • 2, 4, 5 trimethyl thiazole
  • 2,4,5-trimethyl-1,3-thiazole
  • 2,4,5-trimethylthiazole
  • 2,4,5-trimethyl-1,3-thiazole
  • Thiazole, trimethyl-
  • 2,4,5-Trimethylthiazole
  • Trimethylthiazole
  • NSC 170614

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
CHEBI:View
HMDB (The Human Metabolome Database):HMDB33155
FooDB:FDB011160
Export Tariff Code:2934.10.9000
VCF-Online:VCF Volatile Compounds in Food
ChemSpider:View

PhysChem Properties

Material listed in food chemical codex No
Molecular weight 127.20973205566
Specific gravity @ 25 °C
Pounds per Gallon 8.413 to 8.446
Refractive Index 1.503 to 1.511 @ 20 °C
Boiling Point 166 to 167°C @ 717.5 mm Hg
Boiling Point 65 to 67°C @ 20 mm Hg
Vapor Pressure 2.112 mmHg @ 25 °C
Vapor Density 4.3
Flash Point TCC Value 51.11 °C TCC
logP (o/w) 0.852 est
Shelf life 24 months (or longer if stored properly.)
Storage notes Store in cool, dry place in tightly sealed containers, protected from heat and light.
Solubility
alcohol Yes
dipropylene glycol Yes
water, slightly Yes
water, 530 mg/L @ 25 °C (est) Yes
water No

Organoleptic Properties

Odor Type: Chocolate
musty, nutty, vegetable, cocoa, hazelnut, chocolate, coffee, toasted, brown
Odor strength high , recommend smelling in a 1.00 % solution or less
Substantivity 16 hour(s) at 100.00 %
Luebke, William tgsc, (1995) At 1.00 % in dipropylene glycol. musty nutty vegetable cocoa hazelnut chocolate coffee
Mosciano, Gerard P&F 19, No. 4, 45, (1994) Musty, nutty and vegetative with toasted brown cocoa and coffee nuances
Flavor Type: Nutty
nutty, cocoa, green, vegetable, roasted, earthy
Mosciano, Gerard P&F 19, No. 4, 45, (1994) At 10.00 ppm. Nutty, cocoa and green vegetative-like with roasted earthy nuances
Excellent sweet, roasted notes for chocolate, coffee, roasted nuts, and cured meat, especially ham. Notes of raw potato skin at higher levels (>0.05ppm). Sweet, roasted notes, with raw potato skin at higher levels
Used in flavours for condiments, relish, soups at 6ppm, and in frozen and soft confectionery at 2ppm. Cocoa

Occurrences

Safety Information

Safety information

Preferred SDS: View
European information :
Most important hazard(s):
Xn - Harmful.
R 10 - Flammable.
R 22 - Harmful if swallowed.
R 37/38 - Irritating to respiratory system and skin.
R 41 - Risk of serious damage to eyes.
S 02 - Keep out of the reach of children.
S 16 - Keep away from sources of ignition - No Smoking.
S 20/21 - When using do not eat, drink or smoke.
S 24/25 - Avoid contact with skin and eyes.
S 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S 36/37/39 - Wear suitable clothing, gloves and eye/face protection.
Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
Flammable liquids (Category 3), H226
Acute toxicity, Oral (Category 4), H302
Skin irritation (Category 2), H315
Serious eye damage (Category 1), H318
Specific target organ toxicity - single exposure (Category 3), Respiratory system, H335
GHS Label elements, including precautionary statements
Pictogramflame.jpgcorrosion.jpgexclamation-mark.jpg
Signal word Danger
Hazard statement(s)
H226 - Flammable liquid and vapour
H302 - Harmful if swallowed
H315 - Causes skin irritation
H318 - Causes serious eye damage
H335 - May cause respiratory irritation
Precautionary statement(s)
P210 - Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P233 - Keep container tightly closed.
P240 - Ground/bond container and receiving equipment.
P241 - Use explosion-proof electrical/ventilating/lighting/…/equipment.
P242 - Use only non-sparking tools.
P243 - Take precautionary measures against static discharge.
P261 - Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 - Wash skin thouroughly after handling.
P270 - Do not eat, drink or smoke when using this product.
P271 - Use only outdoors or in a well-ventilated area.
P280 - Wear protective gloves/protective clothing/eye protection/face protection.
P301 + P312 - IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P303 + P361 + P353 - IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P304 + P340 - IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305 + P351 + P338 - IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P310 - Immediately call a POISON CENTER or doctor/physician.
P330 - Rinse mouth.
P332 + P313 - IF SKIN irritation occurs: Get medical advice/attention.
P362 - Take off contaminated clothing and wash before reuse.
P370 + P378 - In case of fire: Use dry sand, dry chemical or alcohol-resistant foam for extinction.
P403 + P233 - Store in a well-ventilated place. Keep container tightly closed.
P403 + P235 - Store in a well-ventilated place. Keep cool.
P405 - Store locked up.
P501 - Dispose of contents/ container to an approved waste disposal plant.
Oral/Parenteral Toxicity:
Not determined
Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined

Safety in use information

Category:
flavor and fragrance agents
RIFM Fragrance Material Safety Assessment: Search
IFRA Code of Practice Notification of the 49th Amendment to the IFRA Code of Practice
Recommendation for 2,4,5-trimethyl thiazole usage levels up to:
0.5000 % in the fragrance concentrate.
Maximised Survey-derived Daily Intakes (MSDI-EU): 0.61 (μg/capita/day)
Maximised Survey-derived Daily Intakes (MSDI-USA): 0.30 (μg/capita/day)
Structure Class: II
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: 5
Click here to view publication 5
average usual ppmaverage maximum ppm
baked goods: --
beverages(nonalcoholic): --
beverages(alcoholic): --
breakfast cereal: --
cheese: --
chewing gum: --
condiments / relishes: -6.00000
confectionery froastings: --
egg products: --
fats / oils: --
fish products: --
frozen dairy: -2.00000
fruit ices: -2.00000
gelatins / puddings: --
granulated sugar: --
gravies: -6.00000
hard candy: -2.00000
imitation dairy: --
instant coffee / tea: --
jams / jellies: --
meat products: -6.00000
milk products: --
nut products: --
other grains: --
poultry: --
processed fruits: --
processed vegetables: --
reconstituted vegetables: --
seasonings / flavors: --
snack foods: --
soft candy: --
soups: -6.00000
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 the safety and efficacy of thiazoles, thiophene, thiazoline and thienyl derivatives (chemical group 29): 3-acetyl-2,5-dimethylthiophene when used as a flavouring for all animal species
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

Safety and efficacy of thiazoles, thiophene and thiazoline belonging to chemical group 29 when used as flavourings for all animal species
View page or View pdf

EPI System: View
AIDS Citations:Search
Cancer Citations:Search
Toxicology Citations:Search
EPA Substance Registry Services (TSCA):13623-11-5
EPA ACToR:Toxicology Data
EPA Substance Registry Services (SRS):Registry
Laboratory Chemical Safety Summary :61653
National Institute of Allergy and Infectious Diseases:Data
WISER:UN 1993
WGK Germany:3
2,4,5-trimethyl-1,3-thiazole
Chemidplus:0013623115