2-Acetylthiazole
Product Description
Product Detail
Description References
|
Product Name: |
2-Acetylthiazole |
|
Synonyms: |
Ketone, Methyl 2-thiazolyl (7CI,8CI);1-(1,3-Thiazol-2-yl)ethan-1-one, 2-Ethanoyl-1,3-thiazole;THIAZOLE-2-ACETYL;1-(3-thiazol-3-iumyl)ethanone;2- acetylthiazoliuM;2-acetylthiazone;1-(1,3-Thiazol-2-yl)ethanone;1-(2-thiazolyl)-ethanon |
|
CAS: |
24295-03-2 |
|
MF: |
C5H5NOS |
|
MW: |
127.16 |
|
EINECS: |
246-134-5 |
|
Product Categories: |
A-B;Alphabetical Listings;ACETYLGROUP;Sulphur Derivatives;Thiazoles;Flavors and Fragrances;thiazole Flavor;Building Blocks;Heterocyclic Building Blocks |
|
Mol File: |
24295-03-2.mol |
|
|
|
|
Melting point |
65.5°C |
|
Boiling point |
89-91 °C12 mm Hg(lit.) |
|
density |
1.227 g/mL at 25 °C(lit.) |
|
FEMA |
3328 | 2-ACETYLTHIAZOLE |
|
refractive index |
n20/D 1.548(lit.) |
|
Fp |
173 °F |
|
storage temp. |
Store below +30°C. |
|
pka |
0.05±0.10(Predicted) |
|
form |
Powder or Crystals |
|
color |
White to slightly yellow |
|
Specific Gravity |
1.23 |
|
Sensitive |
Stench |
|
JECFA Number |
1041 |
|
BRN |
109803 |
|
CAS DataBase Reference |
24295-03-2(CAS DataBase Reference) |
|
NIST Chemistry Reference |
2-Acetylthiazole(24295-03-2) |
|
EPA Substance Registry System |
Ethanone, 1-(2-thiazolyl)- (24295-03-2) |
|
Hazard Codes |
Xn,Xi |
|
Risk Statements |
22-36-43-36/37/38 |
|
Safety Statements |
26-36/37-24/25-36 |
|
RIDADR |
3334 |
|
WGK Germany |
3 |
|
F |
13 |
|
Hazard Note |
Irritant/Stench |
|
TSCA |
T |
|
HazardClass |
STENCH |
|
HS Code |
29341000 |
|
Chemical Properties |
A colorless liquid with green onion, herbal, grassy odor. It is used as flavor enhancer and flavoring agent |
|
Preparation |
By oxidation of the corresponding carbinol using dichromate |
|
Aroma threshold values |
Detection at 4 ppb |
|
Taste threshold values |
Taste characteristics at 30 ppm: corn chip with slightly musty background |
|
Purification Methods |
Check NMR spectrum; if it is not too bad, distil it through an efficient column in a vacuum. The oxime sublimes at 140-145o, m 159o, and when crystallised from H2O has m 163-165.5o. [Erlenmeyer et al. Helv Chim Acta 31 1142 1948, Waisvisz et al. J Am Chem Soc 79 4524 1957, Menasseé et al. Helv Chim Acta 40 554 1957, Beilstein 27 IV 2617.] |
|
Raw materials |
Ethyl acetate-->Diethyl ether-->Dichromate, Ion chromatography standard solution, Specpure, Cr2O7ˉ2 1000μg/ml |