4-Formylphenylboronic acid (CAS # 87199-17-5)
| Risk Codes | R34 - Ua rau kub hnyiab R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij. |
| Kev nyab xeeb piav qhia | S22 - Tsis txhob nqus plua plav. 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. S45 - Thaum muaj xwm txheej lossis yog tias koj tsis xis nyob, nrhiav kev kho mob tam sim ntawd (qhia daim ntawv lo thaum twg ua tau.) S37/39 - Hnav cov hnab looj tes tsim nyog thiab tiv thaiv qhov muag / ntsej muag S36 - Hnav khaub ncaws tiv thaiv zoo. |
| UN IDs | UN 1759 8/PG 3 |
| WGK Germany | 3 |
| FLUKA BRAND F CODE | 10 |
| TSCA | T |
| HS Code | 291639 0 |
| Kev Ceeb Toom | Irritant |
| Hazard Class | IRRITANT, AIR SENSIT |
Taw qhia
4-carboxylphenylboronic acid yog cov organic compound. Cov hauv qab no yog kev qhia txog cov khoom, kev siv, kev npaj thiab cov ntaub ntawv kev nyab xeeb ntawm 4-carboxylphenylboronic acid:
Zoo:
- Cov tsos mob: feem ntau yog dawb crystalline lossis crystalline hmoov.
- Soluble: Soluble hauv dej thiab qee cov organic solvents xws li ethanol thiab acetone.
- Cov khoom siv tshuaj: Esterification, acylation thiab lwm yam tshuaj tiv thaiv tuaj yeem tshwm sim.
Siv:
- Ua ib qho tseem ceeb nruab nrab ntawm cov organic synthesis, nws tuaj yeem siv los npaj lwm cov organic sib txuas.
Txoj kev:
- 4-Carboxylbenzylboronic acid tuaj yeem tau txais los ntawm esterification cov tshuaj tiv thaiv ntawm benzoic acid nrog boric acid. Cov kauj ruam tshwj xeeb yog raws li nram no: benzoic acid thiab borate yog rhuab thiab reacted nyob rau hauv cov organic hnyav, thiab ces cov khoom yog tau los ntawm crystallization.
Cov ntaub ntawv kev nyab xeeb:
- 4-carboxylphenylboronic acid feem ntau suav hais tias yog ib qho chaw nyab xeeb, tab sis nws tseem ceeb heev uas yuav tsum tau ua tib zoo saib xyuas cov txheej txheem kev nyab xeeb tsim nyog.
- Thaum ua haujlwm, tsis txhob kov ncaj qha rau ntawm daim tawv nqaij thiab qhov muag. Thaum muaj kev sib cuag, yaug tam sim nrog dej ntau.
- Thaum khaws cia, nws yuav tsum khaws cia kom qhuav thiab kom deb ntawm qhov qhib nplaim taws thiab qhov chaw sov.
