Ethyl 4 4-difluorovalerate（CAS# 659-72-3)
| Nga Tohu Whakamate | Xn – He kino |
| Waehere Morearea | R10 – He mura ahi R18 – Kei te whakamahia pea ka hanga he ranunga kohu-hau ka mura/pahū R20/22 – He kino ma te horomia me te horomia. R36/37/38 – He whakapataritari ki nga kanohi, te punaha manawa me te kiri. |
| Whakaahuatanga Haumaru | 26 – Ki te pa ki nga kanohi, horoi tonu ki te nui o te wai me te rapu tohutohu hauora. |
| UN ID | UN 3272 3 / PGIII |
| WGK Tiamana | 3 |
Kupu Whakataki
Ethyl 4,4-difluoropentanoate, tātai matū C6H8F2O2, he pūhui waro. Ko nga korero e whai ake nei mo tona ahuatanga, te whakamahinga, te whakarite me nga korero haumaru:
Taiao:
-Te ahua: te wai kore tae
-Taimaha rāpoi: 146.12g/mol
-Kohuatanga: 142-143°C
-Kuaiti: 1.119 g/mL
-Solubility: Ka whakarewahia i roto i nga whakarewa pararopi, karekau i te wai
-Taumautanga: pumau, engari he ngawari ki te marama, te wera, te waiora me te waikawa
Whakamahia:
-Ko te Ethyl 4,4-difluoropentanoate he takawaenga whakahiato rauropi nui, he maha nga momo tono i roto i nga waahi rongoa, pesticide me te ahumahi tae. Ka taea te whakamahi hei tohu mo te whakahiato o nga rongoa, pesticides me nga waikano, tae atu ki te whakarite i etahi atu puhui waro.
- 4,4-difluoropentanoic acid ethyl ester ka taea te whakamahi hei whakarewa, reagent esterification me te whakakorikori i roto i te whakahiato waro.
Tikanga Whakaritenga:
Ko te whakaritenga o te ethyl 4,4-difluoropentanoate te nuinga o nga mahi e whai ake nei:
1. Tuatahi, ka tauhohehia te waikawa pentanoic ki te whanariki difluoride kia whiwhi ai te waikawa 4,4-difluoropentanoic.
Ka tauhohehia te waikawa 2.4,4-difluoropentanoic ki te waihano i raro i nga tikanga waikawa hei whakaputa i te ethyl 4,4-difluoropentanoate.
Mōhiohio Haumaru:
- Ko te 4,4-difluoropentanoic acid ethyl ester he wai muramura, me aro te rokiroki me te mahi ki te karo i te ahi me te mura ahi.
-me mau nga karaehe whakamarumaru me nga karapu, karohia te pa ki te kiri me te ngongo o tana kohu.
-Me mahi i roto i te waahi pai-hau kia kore e uru ki te punaha manawa.
-Mena ka pa pohehe, ka tangohia ranei i te pohehe, horoi tonu ki te nui o te wai ka rapu wawe i nga rongoa.
