Ethyl 4 4-difluorovalerate CAS # 659-72-3
Hazard Cov Cim | Xn – Ua phem |
Risk Codes | R10 - Flammable R18 - Hauv kev siv yuav tsim cov nplaim hluav taws / tawg vapor-cua sib tov R20/22 - Ua phem los ntawm kev nqus pa thiab yog tias nqos. R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. |
Kev nyab xeeb piav qhia | 26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej kom ntau thiab nrhiav kev kho mob. |
UN IDs | UN 3272 3 / PGIII |
WGK Germany | 3 |
Taw qhia
Ethyl 4,4-difluoropentanoate, tshuaj formula C6H8F2O2, yog cov organic compound. Cov hauv qab no yog cov lus piav qhia ntawm nws qhov xwm txheej, kev siv, kev npaj thiab cov ntaub ntawv kev nyab xeeb:
Xwm:
-Cov tsos mob: cov kua tsis muaj xim
Molecular Luj: 146.12g / mol
- Cov ntsiab lus kub: 142-143 ° C
Qhov ceev: 1.119 g / mL
-Solubility: Soluble nyob rau hauv cov organic solvents, insoluble nyob rau hauv dej
-Stability: ruaj khov, tab sis susceptible rau lub teeb, tshav kub, oxidants thiab acids
Siv:
-Ethyl 4,4-difluoropentanoate yog ib qho tseem ceeb ntawm cov organic synthesis intermediate, uas muaj ntau yam kev siv hauv kev lag luam tshuaj, tshuaj tua kab thiab tshuaj pleev xim. Nws tuaj yeem siv los ua cov khoom siv ua ntej rau kev sib txuas ntawm cov tshuaj, tshuaj tua kab thiab dyes, nrog rau kev npaj ntawm lwm cov organic tebchaw.
- 4,4-difluoropentanoic acid ethyl ester tuaj yeem siv los ua hnyav, esterification reagent thiab catalyst hauv organic synthesis.
Txoj Kev Npaj:
Kev npaj ntawm ethyl 4,4-difluoropentanoate feem ntau yog ua los ntawm cov kauj ruam hauv qab no:
1. Ua ntej, pentanoic acid yog reacted nrog sulfur difluoride kom tau 4,4-difluoropentanoic acid.
2.4,4-difluoropentanoic acid yog ces reacted nrog ethanol nyob rau hauv acidic tej yam kev mob los tsim ethyl 4,4-difluoropentanoate.
Cov ntaub ntawv kev nyab xeeb:
- 4,4-difluoropentanoic acid ethyl ester yog cov kua hluav taws xob, kev cia thiab kev ua haujlwm yuav tsum tau ua tib zoo saib xyuas kom tsis txhob muaj hluav taws kub thiab qhib nplaim taws.
-siv yuav tsum hnav tsom iav thiab hnab looj tes tiv thaiv, tsis txhob sib cuag nrog daim tawv nqaij thiab nqus tau nws vapor.
- Ua haujlwm nyob rau hauv qhov chaw uas muaj qhov cua zoo kom tsis txhob nkag mus rau hauv txoj kev ua pa.
-Yog tias kov los yog ua yuam kev, yaug tam sim nrog dej kom ntau thiab nrhiav kev kho mob tam sim ntawd.