2-Methyl-2-pentenoic acid (CAS # 3142-72-1)
| Hazard Cov Cim | C - Corrosive |
| Risk Codes | R34 - Ua rau kub hnyiab R22 - Ua phem yog tias nqos R41 - Riam phom loj rau qhov muag |
| Kev nyab xeeb piav qhia | S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob. S36/37/39 - Hnav cov khaub ncaws tiv thaiv tsim nyog, hnab looj tes thiab tiv thaiv qhov muag / ntsej muag. S45 - Thaum muaj xwm txheej lossis yog tias koj tsis xis nyob, nrhiav kev kho mob tam sim ntawd (qhia daim ntawv lo thaum twg ua tau.) |
| UN IDs | UN 3261 8/PG 3 |
| WGK Germany | 2 |
| TSCA | Yog lawm |
| HS Code | 29161900 ib |
| Hazard Class | 8 |
| Packing Group | III |
Taw qhia
2-Methyl-2-pentenic acid, tseem hu ua butenedic acid, yog cov organic compound. Cov hauv qab no yog kev qhia txog cov khoom, kev siv, kev npaj thiab cov ntaub ntawv kev nyab xeeb ntawm 2-methyl-2-pentenoic acid:
Zoo:
- 2-Methyl-2-pentenoic acid yog cov kua uas tsis muaj xim rau daj ntseg daj nrog cov txiv hmab txiv ntoo zoo li tsw.
- 2-Methyl-2-pentenoic acid yog soluble hauv dej thiab cov kuab tshuaj organic xws li cawv thiab ethers.
- Nws yog ib qho chaw ruaj khov uas tsis tuaj yeem tshwm sim los yog nws tus kheej-detonate ntawm cov pa kub thiab siab.
Siv:
- 2-Methyl-2-pentenoic acid feem ntau yog siv rau hauv kev npaj cov khoom siv polymers xws li cov txheej tshwj xeeb, cov nplaum, thiab cov sealants.
- Nws yog ib qho tseem ceeb thib ob monomer uas tuaj yeem npaj los ntawm polymerization ntawm butenic acid copolymer.
Txoj kev:
- 2-Methyl-2-pentenoic acid tuaj yeem npaj los ntawm acid-catalyzed ntxiv ntawm cyclohexene.
- Dimethyllithium thiab cyclohexene yog reacted kom tau 2-methyl-1-cyclohexenylmethyllithium, thiab ces hydrolyzed thiab acidified kom tau 2-methyl-2-pentenoic acid.
Cov ntaub ntawv kev nyab xeeb:
- 2-Methyl-2-pentenoic acid yog ib yam khoom uas ua rau khaus khaus ntawm daim tawv nqaij thiab qhov muag, thiab yuav tsum tau ceev faj zoo xws li hnav hnab looj tes tiv thaiv thiab tsom iav thaum siv.
- Nws tsis ruaj khov rau lub teeb thiab kub kub, thiab cov tshuaj tiv thaiv polymerization tuaj yeem tshwm sim, yog li kev raug tshav ntuj ntev los yog khaws cia ntawm qhov kub siab yuav tsum zam.
- Thaum tuav thiab khaws cia, nws yuav tsum khaws cia kom deb ntawm cov khoom siv hluav taws xob thiab cov oxidizing cov neeg ua haujlwm kom tsis txhob muaj hluav taws kub los yog tawg.
- Thaum tuav 2-methyl-2-pentenoic acid, yuav tsum ua raws li cov txheej txheem kev sim thiab kev nyab xeeb ntawm kev ua haujlwm. Thaum muaj xwm txheej, kev ntsuas kub ceev yuav tsum tau ua tam sim ntawd thiab kev pab kho mob yuav tsum tau nrhiav tam sim ntawd.
