2,4-Dimethylthiazole
2,4-Dimethylthiazole
CAS: 541-58-2
Molecular Formula: C5H7NS
2,4-Dimethylthiazole - Names and Identifiers
| Name | 2,4-Dimethylthiazole |
| Synonyms | NSC 7510 BRN 0106414 2,4-METHYLTHIAZOLE 2,4-DIMETHYLTHIAZOLE 2,4-dimethyl-thiazol 2,4-Dimethylthiazole 2,4-Dimethyl thiazole Thiazole, 2,4-dimethyl- 2,4-DIMETHYL-1,3-THIAZOLE 2,4-dimethyl-1,3-thiazole dimethylthiazole,2,4-dimethylthiazole 4-27-00-00981 (Beilstein Handbook Reference) |
| CAS | 541-58-2 |
| EINECS | 208-786-9 |
| InChI | InChI=1/C5H7NS/c1-4-3-7-5(2)6-4/h3H,1-2H3 |
2,4-Dimethylthiazole - Physico-chemical Properties
| Molecular Formula | C5H7NS |
| Molar Mass | 113.18 |
| Density | 1.056g/mLat 25°C(lit.) |
| Melting Point | 272 °C |
| Boling Point | 144-146°C719mm Hg(lit.) |
| Flash Point | 109°F |
| Water Solubility | Slightly soluble in water |
| Vapor Presure | 4.28mmHg at 25°C |
| Appearance | Liquid |
| Specific Gravity | 1.06 |
| Color | Clear colorless to light yellow |
| BRN | 106414 |
| pKa | pK1:3.98 (25°C,μ=0.1) |
| Storage Condition | Inert atmosphere,Room Temperature |
| Refractive Index | n20/D 1.509(lit.) |
| Physical and Chemical Properties | The liquid is hygroscopic. Boiling point of 144-145 ℃(95.9kPa),70-73 ℃(6.67kPa), relative density of 1.0562(15/4 ℃), refractive index of 1.5091. Soluble in alcohol, ether and cold water, slightly less soluble in hot water. |
| Use | For daily use, food flavor |
2,4-Dimethylthiazole - Risk and Safety
| Risk Codes | R10 - Flammable R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S37/39 - Wear suitable gloves and eye/face protection |
| UN IDs | UN 1993 3/PG 3 |
| WGK Germany | 3 |
| RTECS | XJ4375000 |
| TSCA | Yes |
| HS Code | 29339900 |
| Hazard Class | 3 |
| Packing Group | III |
2,4-Dimethylthiazole - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | is useful as an intermediate in organic synthesis. for daily use, food flavor |
| production method | is obtained by reacting acetamide with phosphorus pentasulfide and then condensing with acetone chloride. Anhydrous benzene was added to the reaction flask, and a mixture of acetamide and powdered phosphorus pentasulfide was added and heated on a water bath. A benzene solution of chloroacetone was added and refluxed for 30 minutes. Water was then added to the reaction mixture, I .e., the layers were separated, the upper reddish liquid was discarded, the lower liquid was made alkaline by adding sodium hydroxide, and extracted with diethyl ether. The extract was dried over anhydrous sodium sulfate. Filtration and atmospheric distillation were carried out to collect the 140-150 ° C. Fraction, and the collected fraction was re-distilled to collect the 143-145 ° C. Fraction, I .e., 2, 4-dimethylthiazole. |
Last Update：2024-04-09 02:00:04
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View History
2,4-Dimethylthiazole
Bismuth ternitrate
Poly[nitrilo(diphenoxyphosphoranylidyne)]
HSDB 6321
O-NITROPHENYL-1-THIO-BETA-D-GALACTOSIDE
Bismuth ternitrate
Poly[nitrilo(diphenoxyphosphoranylidyne)]
HSDB 6321
O-NITROPHENYL-1-THIO-BETA-D-GALACTOSIDE