4-fluoro-3-nitrobenzoic acid (CAS # 453-71-4)
| Risk Codes | R22 - Ua phem yog tias nqos R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. |
| 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. S24/25 - Tsis txhob sib cuag nrog daim tawv nqaij thiab qhov muag. |
| WGK Germany | 2 |
| HS Code | 291639 0 |
| Hazard Class | IRRITANT |
Taw qhia
3-nitro-4-fluorobenzoic acid yog cov organic compound. Cov hauv qab no yog kev qhia txog nws cov khoom, kev siv, kev tsim khoom, thiab cov ntaub ntawv kev nyab xeeb:
Zoo:
- Cov tsos: Dawb crystalline khoom.
- Solubility: insoluble hauv dej, me ntsis soluble hauv cawv thiab ethers.
Siv:
- 3-Nitro-4-fluorobenzoic acid feem ntau yog siv los ua ib qho nruab nrab hauv cov organic synthesis tshwm sim.
Txoj kev:
- 3-nitro-4-fluorobenzoic acid tuaj yeem tau los ntawm kev hloov cov tshuaj tiv thaiv p-nitrotoluene. Cov kauj ruam tshwj xeeb yog thawj zaug fluorine hloov ntawm nitrotoluene nyob rau hauv acidic tej yam kev mob kom tau 3-nitro-4-fluorotoluene, thiab ces ntxiv oxidation cov tshuaj tiv thaiv kom tau 3-nitro-4-fluorobenzoic acid.
Cov ntaub ntawv kev nyab xeeb:
- 3-nitro-4-fluorobenzoic acid tej zaum yuav muaj kuab lom rau tib neeg, nws ua rau khaus qhov muag thiab tawv nqaij.
- Thaum siv, tsis txhob kov ncaj qha rau ntawm daim tawv nqaij thiab qhov muag, thiab siv hnab looj tes tiv thaiv thiab tsom iav yog tias tsim nyog.
- Thaum lub sijhawm khaws cia, nws yuav tsum muab cia rau hauv qhov tsaus ntuj, qhuav, thiab qhov chaw txias, kom deb ntawm hluav taws thiab oxidants.
- Thaum muab pov tseg, thov ua raws li cov cai tswj kev nyab xeeb kom tsis txhob muaj kuab paug ib puag ncig.
