5-Acetyl-2,4-dimethylthiazole
Synonym(s):5-Acetyl-2,4-dimethylthiazole;nutty thiazole
- CAS NO.：38205-60-6
- Empirical Formula: C7H9NOS
- Molecular Weight: 155.22
- MDL number: MFCD00005331
- EINECS: 253-826-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-28 03:28:36
What is 5-Acetyl-2,4-dimethylthiazole?
Chemical properties
Colorless to light yellow liqui
Chemical properties
2,4-Dimethyl-5-acetylthiazole is a heterocyclic thiazole that has an odor of roasted nut or sulfur, as in boiled meat.
Definition
ChEBI: 5-Acetyl-2,4-dimethylthiazole is a member of thiazoles.
Taste threshold values
Taste characteristics at 10 ppm: nutty, roasted, meaty and savory with woody and coffee nuances.
General Description
Conversion of 5-acetyl-2,4-dimethylthiazoleoxime by SeO2 via deoximation to 5-acetyl-2,4-dimethylthiazole has been reported.
Properties of 5-Acetyl-2,4-dimethylthiazole
| Boiling point: | 228-230 °C (lit.) |
| Density | 1.15 g/mL at 25 °C (lit.) |
| refractive index | n |
| FEMA | 3267 | 2,4-DIMETHYL-5-ACETYLTHIAZOLE |
| Flash point: | 220 °F |
| storage temp. | 2-8°C |
| form | clear liquid |
| pka | 1.97±0.10(Predicted) |
| Specific Gravity | 1.15 |
| color | Light yellow to Brown |
| Odor | at 0.10 % in dipropylene glycol. meaty sulfurous nutty boiled meat |
| JECFA Number | 1055 |
| BRN | 120560 |
| CAS DataBase Reference | 38205-60-6(CAS DataBase Reference) |
| NIST Chemistry Reference | 5-Acetyl-2,4-dimethylthiazole(38205-60-6) |
Safety information for 5-Acetyl-2,4-dimethylthiazole
| Signal word | Danger |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07  Health Hazard GHS08 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H334:Sensitisation, respiratory H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 5-Acetyl-2,4-dimethylthiazole
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