5-Fluoro-2-nitrobenzoic acid (CAS # 320-98-9)
| Risk Codes | R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. R22 - Ua phem yog tias nqos R20/21/22 - Ua phem los ntawm kev nqus pa, tiv thaiv daim tawv nqaij thiab yog tias nqos. |
| 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 - Hnav khaub ncaws tiv thaiv zoo. S36/37/39 - Hnav cov khaub ncaws tiv thaiv tsim nyog, hnab looj tes thiab tiv thaiv qhov muag / ntsej muag. S22 - Tsis txhob nqus plua plav. |
| WGK Germany | 3 |
| HS Code | 291639 0 |
| Hazard Class | IRRITANT |
Taw qhia
5-fluoro-2-nitrobenzoic acid (5-fluoro-2-nitrobenzoic acid) yog cov organic compound nrog cov tshuaj formula C7H4FNO4. 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: 5-fluoro-2-nitrobenzoic acid yog dawb los yog dawb crystalline hmoov.
- Melting point: Txog 172 ° C.
-Solubility: me ntsis soluble nyob rau hauv dej, soluble nyob rau hauv ib co organic solvents xws li cawv thiab esters.
Siv:
-Chemical synthesis: 5-fluoro-2-nitrobenzoic acid yog cov feem ntau siv cov organic synthesis intermediate, uas tuaj yeem siv los ua ke rau lwm cov organic tebchaw, xws li tshuaj, tshuaj tua kab thiab dyes.
-Kev tshawb fawb lub hom phiaj: Vim nws cov qauv muaj cov fluorine thiab nitro pawg, 5-fluoro-2-nitrobenzoic acid muaj cov tshuaj tshwj xeeb thiab tuaj yeem siv rau kev tshawb fawb thiab kev sim kuaj.
Txoj kev:
Txoj kev npaj ntawm 5-fluoro-2-nitrobenzoic acid feem ntau yog tau los ntawm fluorination cov tshuaj tiv thaiv ntawm 2-nitrobenzoic acid.
1. Ua ntej, 2-nitrobenzoic acid yog reacted nrog ib tug fluorinating neeg sawv cev (xws li hydrogen fluoride los yog sodium fluoride).
2. Tom qab cov tshuaj tiv thaiv, 5-fluoro-2-nitrobenzoic acid cov khoom tau txais.
Nws yuav tsum tau muab sau tseg tias thaum lub sij hawm cov txheej txheem npaj, cov kev sim uas tsim nyog kev khiav hauj lwm tej yam kev mob thiab kev nyab xeeb ntsuas yuav tsum tau siv los xyuas kom meej qhov kev nyab xeeb ntawm kev sim.
Cov ntaub ntawv kev nyab xeeb:
- 5-fluoro-2-nitrobenzoic acid yog suav tias yog ib qho kev nyab xeeb zoo nyob rau hauv cov xwm txheej dav dav, tab sis nws tseem yuav tsum tau ua tib zoo saib xyuas thiab ua raws li kev sim ua kom tsim nyog.
-Nyob rau hauv kev sib cuag nrog cov compound no, kev sib cuag ntawm daim tawv nqaij ncaj qha thiab nqus tau nws cov plua plav yuav tsum raug zam.
-Nyob rau hauv cov txheej txheem siv thiab khaws cia, thov tiv thaiv cov khoom siv hauv chav kuaj kom zoo, thiab ua raws li cov lus qhia txog kev nyab xeeb.
-Thaum muaj xwm txheej los yog xav tias muaj kab mob lom, nrhiav kev kho mob tam sim ntawd thiab nqa daim ntawv qhia kev nyab xeeb.
