2 3 5-trifluoropyridine (CAS # 76469-41-5)
| Risk Codes | R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. R10 - Flammable |
| 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. S37 - Hnav cov hnab looj tes tsim nyog. |
| UN IDs | Xyoo 1993 |
| HS Code | 293339 0 |
| Kev Ceeb Toom | Flammable / Irritant |
| Hazard Class | 3 |
| Packing Group | III |
Taw qhia
2,3,5-Trifluoropyridine yog cov organic compound nrog cov tshuaj formula C5H2F3N. 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:
2,3,5-Trifluoropyridine yog cov kua tsis muaj xim uas muaj ntxhiab tsw. Nws muaj qhov ntom ntom ntawm 1.42 g / mL, qhov kub ntawm 90-91 ° C, thiab melting point ntawm -47 ° C. Nws muaj zog hydrophobicity thiab nyuaj rau yaj hauv dej, tab sis nws tuaj yeem yaj hauv cov kuab tshuaj organic xws li ethanol, acetone thiab xylene.
Siv:
2,3,5-Trifluoropyridine yog tsuas yog siv nyob rau hauv cov organic synthesis. Raws li ib qho zoo fluorination reagent, nws tuaj yeem siv rau hauv cov tshuaj fluorination, thiab feem ntau yog siv los ntawm kev qhia txog cov tshuaj fluorine atoms. Tsis tas li ntawd, nws tseem tuaj yeem siv los ua ib qho nruab nrab rau kev sib txuas ntawm cov tshuaj, tshuaj tua kab thiab lwm cov organic tebchaw.
Txoj Kev Npaj:
2,3,5-Trifluoropyridine muaj ntau txoj kev npaj, ib qho ntawm feem ntau yog siv los ntawm reacting 2,3, 5-trichloropyridine nrog hydrofluoric acid. Thaum lub sij hawm cov tshuaj tiv thaiv, 2,3, 5-trichloropyridine yog reacted nrog hydrofluoric acid nyob rau hauv ib tug haum hnyav, thiab cov tshuaj tiv thaiv kub thiab pH tus nqi yog tswj kom thaum kawg tau 2,3,5-Trifluoropyridine.
Cov ntaub ntawv kev nyab xeeb:
Ua tib zoo saib xyuas kev nyab xeeb thaum tuav 2,3,5-Trifluoropyridine. Nws yog ib qho pungent tsw uas yuav ua rau khaus rau ntawm daim tawv nqaij, qhov muag thiab ua pa. Yog li ntawd, tsis txhob kov ncaj qha rau ntawm daim tawv nqaij thiab ob lub qhov muag thaum siv, thiab xyuas kom meej tias yuav tsum tau ua hauj lwm nyob rau hauv ib tug zoo-ventilated qhov chaw. Thaum tuav thiab khaws cia, nws yog ib qho tsim nyog yuav tsum tau ua cov kev tiv thaiv tsim nyog thiab tsis txhob sib cuag nrog oxidizing cov neeg ua haujlwm thiab cov kua qaub uas muaj zog tiv thaiv cov tshuaj tiv thaiv txaus ntshai.
Tsis tas li ntawd, rau kev siv cov tshuaj, thov ua raws li cov txheej txheem kev khiav hauj lwm kom raug thiab cov kev cai cuam tshuam, thiab sab laj cov kws tshaj lij kev taw qhia thaum tsim nyog.
