4.5-Dimethyl thiazole (CAS # 3581-91-7)
| Risk Codes | R10 - Flammable R22 - Ua phem yog tias nqos R37/38 - Kab mob ua pa thiab tawv nqaij. R41 - Riam phom loj rau qhov muag R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. |
| Kev nyab xeeb piav qhia | S16 - Khaws kom deb ntawm qhov chaw hluav taws xob. S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob. S39 - Hnav qhov muag / ntsej muag tiv thaiv. S37/39 - Hnav cov hnab looj tes tsim nyog thiab tiv thaiv qhov muag / ntsej muag S36/37/39 - Hnav cov khaub ncaws tiv thaiv tsim nyog, hnab looj tes thiab tiv thaiv qhov muag / ntsej muag. |
| UN IDs | UN 1993 3/PG 3 |
| WGK Germany | 3 |
| RTECS | XJ438000 |
| HS Code | 293499 0 |
| Hazard Class | 3 |
| Packing Group | III |
Taw qhia
4,5-Dimethylthiazole yog cov organic compound. Nov yog qee yam ntawm nws cov khoom, kev siv, kev tsim khoom, thiab cov ntaub ntawv kev nyab xeeb:
Zoo:
- Cov tsos mob: tsis muaj xim tsis muaj kua lossis crystalline khoom.
- Solubility: Soluble nyob rau hauv ntau cov organic solvents xws li cawv, ethers thiab ketones.
- Stability: Nws yog qhov ruaj khov ntawm chav tsev kub.
Siv:
- Nws kuj tseem siv tau los ua cov roj hmab accelerator thiab roj hmab vulcanizing tus neeg sawv cev los txhim kho cov khoom siv ntawm cov roj hmab.
Txoj kev:
- 4,5-Dimethylthiazole tuaj yeem tsim los ntawm cov tshuaj tiv thaiv ntawm dimethyl sodium dithiolate thiab 2-bromoacetone.
- Kev sib npaug sib npaug: 2-bromoacetone + dimethyl dithiolate → 4,5-dimethylthiazole + sodium bromide.
Cov ntaub ntawv kev nyab xeeb:
- 4,5-Dimethylthiazole yog cov organic compound thiab yuav tsum tau zam nrog kev ntsuas tsim nyog.
- Cov hnab looj tes tiv thaiv, tsom iav thiab hnav ris tsho yuav tsum tau siv thaum siv.
- Tsis txhob nqus nws cov vapors thiab xyuas kom muaj kev ua haujlwm hauv qhov chaw muaj cua zoo.
-Thaum muaj kev sib tsoo ntawm qhov muag, yaug tam sim nrog dej kom ntau thiab nrhiav kev kho mob sai.
- Khaws 4,5-dimethylthiazole nyob rau hauv qhov chaw txias, qhuav kom deb ntawm oxidants thiab muaj zog acids.
