3-Fluoro-4-nitrobenzoic acid (CAS # 403-21-4)
| Risk Codes | R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. R37/38 - Kab mob ua pa thiab tawv nqaij. R36 - Khau qhov muag R22 - Ua phem 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. S36/37/39 - 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. |
| HS Code | 291639 0 |
| Hazard Class | IRRITANT |
Taw qhia
3-Fluoro-4-nitrobenzoic acid yog cov organic compound nrog cov tshuaj formula C7H4FNO4. Cov hauv qab no yog cov lus piav qhia ntawm qee yam khoom, kev siv, kev npaj thiab cov ntaub ntawv kev nyab xeeb ntawm cov khoom sib xyaw:
Xwm:
-Cov tsos mob: Dawb los yog daj me ntsis siv lead ua, los yog lub teeb daj mus rau yellowish xim av hmoov.
- Melting point: 174-178 ° C.
- Kub taw tes: 329 ° C.
-Solubility: Soluble nyob rau hauv cawv thiab organic solvents, xws li ethanol, dimethylformamide thiab dichloromethane.
Siv:
- 3-Fluoro-4-nitrobenzoic acid yog ib qho tseem ceeb nruab nrab, dav siv nyob rau hauv cov organic synthesis.
-Nws yog feem ntau siv nyob rau hauv tshuaj synthesis thiab dye synthesis.
-Qhov kev sib xyaw no tseem tuaj yeem siv los ua cov khoom siv raw rau dyes, tshuaj tua kab thiab tawg.
Txoj Kev Npaj:
Txoj kev npaj ntawm 3-Fluoro-4-nitrobenzoic acid feem ntau suav nrog cov kauj ruam hauv qab no:
1. 4-Nitrobenzoic acid yog reacted nrog hydrogen fluoride kom tau 3-nitro-4-fluorobenzoic acid.
2. Cov khoom tau txais nyob rau hauv cov kauj ruam dhau los yog reacted nrog sulfuric acid kom tau 3-Fluoro-4-nitrobenzoic acid.
Cov ntaub ntawv kev nyab xeeb:
- 3-Fluoro-4-nitrobenzoic acid tej zaum yuav ua rau khaus ntawm qhov muag, tawv nqaij, thiab ua pa ib ntsuj av. Ua tib zoo saib xyuas kev siv cov cuab yeej tiv thaiv tus kheej thaum sib cuag.
-Nws yuav tsum muab khaws cia rau hauv qhov tsaus, qhuav thiab kaw lub thawv, kom deb ntawm hluav taws thiab oxidizing tus neeg sawv cev.
-Nyob rau hauv kev siv thiab tuav, yuav tsum ua raws li cov txheej txheem kev nyab xeeb, thiab tswj qhov cua kom zoo.
