5-Methylthiazole
- CAS NO.：3581-89-3
- Empirical Formula: C4H5NS
- Molecular Weight: 99.15
- MDL number: MFCD00005335
- EINECS: 626-260-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-10-27 18:05:13
What is 5-Methylthiazole?
The Uses of 5-Methylthiazole
5-methyl thiazole undergoes alkylation with n-butyl bromide followed by anion exchange of Br- for BF4- to yeild mobile, room-temperature ionic liquids.
What are the applications of Application
5-Methylthiazole is a chemical building block
General Description
The microwave spectrum of 5-methylthiazole was investigated by employing both Fourier transform and Stark spectroscopy. 5-methyl thiazole undergoes alkylation with n-butyl bromide followed by anion exchange of Br- for BF4- to give mobile, room-temperature ionic liquids.
Properties of 5-Methylthiazole
| Melting point: | -40.3°C |
| Boiling point: | 141-142 °C/745 mmHg (lit.) |
| Density | 1.12 g/mL at 25 °C (lit.) |
| refractive index | n |
| Flash point: | 108 °F |
| storage temp. | Sealed in dry,Room Temperature |
| form | Liquid |
| pka | pK1:3.03(+1) (25°C,μ=0.1) |
| color | Clear colorless to pale yellow |
| Water Solubility | Insoluble in water. |
| BRN | 104674 |
| CAS DataBase Reference | 3581-89-3(CAS DataBase Reference) |
| NIST Chemistry Reference | Thiazole, 5-methyl-(3581-89-3) |
Safety information for 5-Methylthiazole
| Signal word | Warning |
| Pictogram(s) |
 Flame Flammables GHS02  Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H226:Flammable liquids H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. 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-Methylthiazole
| InChIKey | RLYUNPNLXMSXAX-UHFFFAOYSA-N |
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