3 5-difluoropyridine (CAS # 71902-33-5)
| Risk Codes | R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. R50 - Muaj tshuaj lom rau cov kab mob hauv dej R20/21/22 - Ua phem los ntawm kev nqus pa, tiv thaiv daim tawv nqaij thiab yog tias nqos. R11 - Cov nplaim hluav taws kub heev |
| 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. S61 - Tsis txhob tso tawm rau ib puag ncig. Xa mus rau cov lus qhia tshwj xeeb / cov ntaub ntawv kev nyab xeeb. S36/37 - Hnav cov khaub ncaws tiv thaiv thiab hnab looj tes tsim nyog. |
| UN IDs | Xyoo 1993 |
| WGK Germany | 3 |
| HS Code | 293339 0 |
| Kev Ceeb Toom | Heev Flammable/Irritant |
| Hazard Class | 3 |
| Packing Group | II |
Taw qhia
3,5-Difluoropyridine yog cov organic compound nrog cov tshuaj formula C5H3F2N. Cov hauv qab no yog cov lus piav qhia ntawm nws qhov xwm txheej, kev siv, kev tsim thiab cov ntaub ntawv kev nyab xeeb:
Xwm:
-Cov tsos mob: cov kua tsis muaj xim
- Melting point: -53 ℃
-Boiling point: 114-116 ℃
Qhov ceev: 1.32g / cm³
-Solubility: Soluble nyob rau hauv dej thiab feem ntau organic solvents.
Siv:
- 3,5-Difluoropyridine feem ntau yog siv los ua cov khoom tseem ceeb hauv cov organic synthesis. Nws tuaj yeem siv rau hauv kev sib txuas ntawm cov tshuaj tua kab, tshuaj thiab lwm yam organic tebchaw.
-Nws tseem tuaj yeem siv los ua cov tshuaj reagent rau kev tshuaj xyuas thiab kev tshawb fawb tshuaj.
Txoj Kev Npaj:
Kev npaj ntawm 3,5-Difluoropyridine feem ntau yog ua los ntawm ib qho ntawm cov hauv qab no:
-Pib pib ntawm pyrimidine, thawj zaug qhia fluorine atoms ntawm pyrimidine, thiab tom qab ntawd ntxiv fluorine atoms rau 3 thiab 5 txoj haujlwm.
- tau los ntawm 3,5-difluoro chloropyrimidine lossis 3,5-difluoro bromopyrimidine cov tshuaj tiv thaiv.
Cov ntaub ntawv kev nyab xeeb:
- 3,5-Difluoropyridine tej zaum yuav muaj teeb meem rau tib neeg lub cev. Kev sib xyaw ua ke tuaj yeem ua rau qhov muag thiab tawv nqaij ua xua. Yog li ntawd, yuav tsum tau siv cov kev tiv thaiv tsim nyog, xws li hnav cov hnab looj tes tsim nyog, tsom iav thiab khaub ncaws tiv thaiv.
-Thaum kov lossis nqus tau 3,5-Difluoropyridine, thaj chaw cuam tshuam yuav tsum raug ntxuav tam sim ntawd thiab qhia los ntawm kws kho mob.
-Thaum khaws cia thiab tuav, yuav tsum tau saib xyuas kom tsis txhob muaj oxidants muaj zog thiab muaj zog acids.
Thov nco ntsoov tias thaum siv thiab tuav 3,5-Difluoropyridine, ib txwm ua raws li cov txheej txheem kev nyab xeeb hauv chav kuaj thiab xa mus rau cov ntaub ntawv thiab cov lus qhia txog kev nyab xeeb.
