4-Bromo-3-nitrobenzoic acid (CAS # 6319-40-0)
| Risk Codes | R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. 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. |
| WGK Germany | 3 |
| HS Code | 291639 0 |
| Kev Ceeb Toom | Irritant |
Taw qhia
3-nitro-4-bromobenzoic acid yog cov organic compound nrog cov mis mos C7H4BrNO4.
Xwm:
-Cov tsos mob: tsis muaj xim siv lead ua lossis lub teeb daj crystalline hmoov.
- melting point: 215-218 ℃.
-Solubility: Solubility nyob rau hauv dej yog me me, soluble nyob rau hauv ethanol, ether thiab chloroform thiab lwm yam organic solvents.
Siv:
3-nitro-4-bromobenzoic acid yog ib qho tseem ceeb organic synthesis intermediate, uas yog dav siv nyob rau hauv kws tshuaj synthesis thiab dye kev lag luam.
-Drug synthesis: tuaj yeem siv los ua tus thawj coj rau kev sib txuas ntawm qee cov tshuaj tsis-steroidal anti-inflammatory thiab lwm yam tshuaj.
-Dye kev lag luam: tuaj yeem siv rau hluavtaws dyes thiab pigments.
Txoj Kev Npaj:
3-nitro-4-bromobenzoic acid tuaj yeem npaj los ntawm nitration ntawm 4-bromobenzoic acid. Cov kauj ruam tshwj xeeb yog raws li nram no:
1. Dissolve 4-bromobenzoic acid nyob rau hauv ib tug tov tov ntawm nitric acid thiab glacial acetic acid.
2. Sib tov cov tshuaj tiv thaiv ntawm qhov kub thiab txias.
3. Cov khoom precipitated nyob rau hauv cov tshuaj tiv thaiv sib tov yog lim thiab ntxuav, thiab ces qhuav kom tau 3-nitro-4-bromobenzoic acid.
Cov ntaub ntawv kev nyab xeeb:
3-nitro-4-bromobenzoic acid muaj cov nyhuv stimulating ntawm daim tawv nqaij thiab qhov muag, thiab yuav tsum tau ntxuav tag nrho tom qab kev sib cuag. Thaum siv thiab khaws cia, tsis txhob nqus nws cov plua plav thiab hnav cov khoom tiv thaiv yog tias tsim nyog. Tsis tas li ntawd, 3-nitro-4-bromobenzoic acid kuj tseem tuaj yeem ua rau muaj kev puas tsuaj rau ib puag ncig, yog li yuav tsum tau saib xyuas kom ua raws li cov cai tswj kev nyab xeeb ib puag ncig.
