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Basic Information
| CAS No.: | 541-58-2 |
|---|---|
| Name: | 2,4-Dimethylthiazole |
| Molecular Structure: | |
|
|
|
| Formula: | C5H7NS |
| Molecular Weight: | 113.183 |
| Synonyms: | 2,4-Dimethyl-1,3-thiazole;2,4-Methylthiazole;NSC 7510; |
| EINECS: | 208-786-9 |
| Density: | 1.081 g/cm3 |
| Melting Point: | 272 °C |
| Boiling Point: | 153.4 °C at 760 mmHg |
| Flash Point: | 46 °C |
| Solubility: | Slightly soluble in water |
| Appearance: | Colorless to light yellow liquid |
| Hazard Symbols: |
 Xi,  F
|
| Risk Codes: | 10-36/37/38 |
| Safety: | 16-26-36-37/39 |
| Transport Information: | UN 1993 3/PG 3 |
| PSA: | 41.13000 |
| LogP: | 1.75990 |
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Synthetic route
Conditions
| Conditions | Yield |
|---|---|
| In benzene for 1h; Heating; | 97% |
Conditions
| Conditions | Yield |
|---|---|
| In N,N-dimethyl-formamide at 60℃; for 1h; Hantzsch Thiazole Synthesis; Sealed tube; | 75% |
Conditions
| Conditions | Yield |
|---|---|
| With aluminum oxide; hydrogen sulfide at 375℃; |
- 13797-62-1
α-(2-methyl-4-thiazolyl)acetic acid
A
- 541-58-2
2,4-dimethylthiazole
B
- 15719-64-9, 15719-76-3, 97762-63-5
methylammonium carbonate
Conditions
| Conditions | Yield |
|---|---|
| bei der trocknen Destillation; |
- 77470-53-2
4-chloromethyl-2-methylthiazole hydrochloride
- 541-58-2
2,4-dimethylthiazole
Conditions
| Conditions | Yield |
|---|---|
| With acetic acid; zinc |
Conditions
| Conditions | Yield |
|---|---|
| With sodium hydroxide; sodium hydrogensulfide; ethanol | |
| With diphosphorus pentasulfide; benzene | |
| With diphosphorus pentasulfide |
Conditions
| Conditions | Yield |
|---|---|
| With dihydrogen peroxide |
Conditions
| Conditions | Yield |
|---|---|
| (i) BuLi, Et2O, (ii) /BRN= 635994/; Multistep reaction; |
- 76133-03-4
1-iminoethylthiopropanone hydrobromide
- 541-58-2
2,4-dimethylthiazole
Conditions
| Conditions | Yield |
|---|---|
| With sodium carbonate In acetic acid at 40 - 50℃; | 12.6 g |
- 57516-14-0
2,4-Dimethyl-thiazole; compound with iodine
- 541-58-2
2,4-dimethylthiazole
Conditions
| Conditions | Yield |
|---|---|
| In tetrachloromethane at 24.9℃; Equilibrium constant; investigated by electronic absorption spectra; |
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2,4-Dimethylthiazole
Chemistry
Molecular Formula: C5H7NS 
Formula Weight: 113.18
bp of 2,4-DIMETHYLTHIAZOLE (541-58-2): 144-146 °C 719 mm Hg(lit.)
density : 1.056 g/mL at 25 °C(lit.)
refractive index : n20/D 1.509(lit.)
Fp of 2,4-DIMETHYLTHIAZOLE (541-58-2): 109 °F
storage temp. : -20°C
APPEARANCE : Clear to pale yellow liquid.
2,4-DIMETHYLTHIAZOLE (541-58-2) is dissolved in alcohol, ether and cold water.
Formula Weight: 113.18
bp of 2,4-DIMETHYLTHIAZOLE (541-58-2): 144-146 °C 719 mm Hg(lit.)
density : 1.056 g/mL at 25 °C(lit.)
refractive index : n20/D 1.509(lit.)
Fp of 2,4-DIMETHYLTHIAZOLE (541-58-2): 109 °F
storage temp. : -20°C
APPEARANCE : Clear to pale yellow liquid.
2,4-DIMETHYLTHIAZOLE (541-58-2) is dissolved in alcohol, ether and cold water.
Uses
2,4-DIMETHYLTHIAZOLE (541-58-2) is used as an organic synthesis intermediate.
Production
First, acetamide reacts with phosphorus pentasulfide; then condensation with acetone to form 2,4-DIMETHYLTHIAZOLE (541-58-2).
Toxicity Data With Reference
| 1. | ipr-mus LD50:250 mg/kg | NTIS** National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) AD691-490 . |
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
Hazard Codes : Xi,F (Irritant; Highly Flammable)
Risk Statements : 10-36/37/38 (Flammable; Irritating to eyes, respiratory system and skin)
Safety Statements : 16-26-36-37/39 (Keep away from sources of ignition - No smoking; In case of contact with eyes, rinse immediately with plenty of water and seek medical advice; Wear suitable protective clothing; Wear suitable gloves and eye/face protection)
RIDADR : UN 1993 3/PG 3
WGK Germany : 3
RTECS : XJ4375000
HazardClass : 3
PackingGroup : III
Poison by intraperitoneal route. When heated to decomposition it emits very toxic fumes of NOx and SOx.
Risk Statements : 10-36/37/38 (Flammable; Irritating to eyes, respiratory system and skin)
Safety Statements : 16-26-36-37/39 (Keep away from sources of ignition - No smoking; In case of contact with eyes, rinse immediately with plenty of water and seek medical advice; Wear suitable protective clothing; Wear suitable gloves and eye/face protection)
RIDADR : UN 1993 3/PG 3
WGK Germany : 3
RTECS : XJ4375000
HazardClass : 3
PackingGroup : III
Poison by intraperitoneal route. When heated to decomposition it emits very toxic fumes of NOx and SOx.
Specification
STORAGE: Store in a cool dry place. Keep container closed. Wash thoroughly after handling.