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| IUPAC name : | 1-(4,5-dihydro-1,3-thiazol-2-yl)ethanone |
| InChI : | InChI=1/C5H7NOS/c1-4(7)5-6-2-3-8-5/h2-3H2,1H3 |
| InChIKey : | FZOZFDAMVVEZSJ-UHFFFAOYAO |
| SMILES : | CC(=O)C1=NCCS1 |
| cas number : | 29926-41-8 |
| fema number : | 3817 |
| coe number : | 2335 |
| jecfa number : | 1759 |
| fl. number : | 15.010 |
| molar refractivity : | 34.56 ± 0.5 cm3 |
| parachor : | 260.0± 8.0 cm3 |
| index of refraction : | 1.609 ± 0.05 |
| surface tension : | 46.1 ± 7.0 dyne/cm |
| density : | 1.29 ± 0.1 g/cm3 |
| polarizability : | 13.70 ± 0.5 10-24cm3 |
| XlogP : | 0.20 |
| XlogP3-AA : | 0.20 |
| molecular weight : | 129.1801800 (IUPAC) |
| formula : | C5 H7 N O S |
| NMR Predictor : | Predict |
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| export tariff code : | 2934.10.0000 |
| fda reg : | unspecified |
Suppliers :
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| Fontarome : | 2-ACETYL 2 THIAZOLINE
Odor: Herbal, grassy |
| Nanjing : | 2-Acetyl-2-thiazoline
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| Penta : | 2-acetyl-2-thiazoline
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| Sigma-Aldrich-SAFC : | 2-Acetyl-2-thiazoline
≥96% Odor: corn chip taco potato chip toasted bread nutty |
| Symrise : | Acetyl thiazoline-2
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organoleptics :
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| odor type : | corn chip |
| odor strength : | high , recommend smelling in a 0.10 % solution or less |
odor description :¹ at 0.10 % in propylene glycol. | corn chip taco potato chip toasted bread nutty |
| odor sample from : | Sigma-Aldrich Inc. |
properties :
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| appearence : | dark yellow orange brown liquid to solid |
| assay : | 98.00 to 100.00 %
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| Food Chemicals Codex Listed : | No |
| specific gravity : | 1.16000 to 1.17000 @ 25.00 °C.
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| pounds per gallon - calc. : | 9.652 to 9.736
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| refractive index : | 1.52740 to 1.52840 @ 20.00 °C.
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| melting point : | 26.00 to 30.00 °C. @ 760.00 mm Hg
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| boiling point : | 222.00 to 223.00 °C. @ 760.00 mm Hg
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| flash point : | 198.00 °F. TCC ( 92.22 °C. )
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| logP (o/w) : | -0.89 |
| shelf life : | 24.00 month(s) or longer if stored properly. |
| storage : | store in cool, dry place in tightly sealed containers, protected from heat and light. |
safety :
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| most important hazard(s) : | Xn - Harmful. |
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R 22 - Harmful if swallowed. R 36 - Irritating to eyes. S 02 - Keep out of the reach of children. S 20/21 - When using do not eat, drink or smoke. S 25 - Avoid contact with 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.
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| Oral Toxicity(LD50) : |
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Not determined
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| Dermal Toxicity(LD50) : |
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Not determined
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| Inhalation Toxicity(LC50) : |
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Not determined
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safety in use :
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| Maximised Survey-derived Daily Intakes (MSDI-EU) : | 9.30 (μg/capita/day) |
| Maximised Survey-derived Daily Intakes (MSDI-USA) : | ND (μg/capita/day) |
| modified Theoretical Added Maximum Daily Intake (mTAMDI) : | 810 (μg/person/day) |
| Threshold of concern : | 540 (μg/person/day) |
| Structure Class : | II |
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| recommendation for 2-acetyl-2-thiazoline usage levels up to : |
| | not for fragrance use.
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| recommendation for 2-acetyl-2-thiazoline usage levels up to : |
| | 5.0000 ppm in the flavor.
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| Food categories according to Commission Regulation EC No. 1565/2000 (EC, 2000) in FGE.06 (EFFA, 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 (EFFA, 2002i). |
| Note : mg/kg = 0.001/1000 = 0.000001 = 1/1000000 = ppm. |
| | average usage mg/kg | maximum usage mg/kg |
| Dairy products, excluding products of category 02.0 (01.0) : | 0.40000 | 2.00000 |
| Fats and oils, and fat emulsions (type water-in-oil) (02.0) : | 0.20000 | 1.00000 |
| Edible ices, including sherbet and sorbet (03.0) : | 0.40000 | 2.00000 |
| Processed fruit (04.1) : | 0.30000 | 1.50000 |
| Processed vegetables (incl. mushrooms & fungi, roots & tubers, pulses and legumes), and nuts & seeds (04.2) : | - | - |
| Confectionery (05.0) : | 0.40000 | 2.00000 |
| Cereals and cereal products, incl. flours & starches from roots & tubers, pulses & legumes, excluding bakery (06.0) : | 0.20000 | 1.00000 |
| Bakery wares (07.0) : | 0.40000 | 2.00000 |
| Meat and meat products, including poultry and game (08.0) : | 0.10000 | 0.40000 |
| Fish and fish products, including molluscs, crustaceans and echinoderms (MCE) (09.0) : | 0.10000 | 0.40000 |
| Eggs and egg products (10.0) : | - | - |
| Sweeteners, including honey (11.0) : | - | - |
| Salts, spices, soups, sauces, salads, protein products, etc. (12.0) : | 0.20000 | 1.00000 |
| Foodstuffs intended for particular nutritional uses (13.0) : | 0.40000 | 2.00000 |
| Non-alcoholic ("soft") beverages, excl. dairy products (14.1) : | 0.20000 | 1.00000 |
| Alcoholic beverages, incl. alcohol-free and low-alcoholic counterparts (14.2) : | 0.40000 | 2.00000 |
| Ready-to-eat savouries (15.0) : | 1.00000 | 5.00000 |
| Composite foods (e.g. casseroles, meat pies, mincemeat) - foods that could not be placed in categories 01.0 - 15.0 (16.0) : | 0.20000 | 1.00000 |
safety references :
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| European Food Safety Athority(efsa) : | Flavor usage levels; Subacute, Subchronic, Chronic and Carcinogenicity Studies; Developmental / Reproductive Toxicity Studies; Genotoxicity Studies... |
| msds : | msds |
| EPI System : | view |
| Canada Domestic Sub. List : | Yes |
| WISER : | UN 2811 |
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| WGK Germany : | 3 |
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| | 1-(4,5-dihydro-1,3-thiazol-2-yl)ethanone
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| chemidplus : | 029926418 |
| EPA Substance Registry Services : | 29926-41-8 |
references :
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| | 1-(4,5-dihydro-1,3-thiazol-2-yl)ethanone
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| fl. number : | 15.010 |
| jecfa number : | 1759 |
| NIST Chemistry WebBook : | 8222021 |
| pubchem : | 746634 |
other :
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| reference : | Luebke, William tgsc, (1993)¹ |
| VCF-Online: | VCF Volatile Compounds in Food |
| | C of A |
| FDA Everything Added to Food in the United States (EAFUS) | View |