3 5-difluorobenzaldehyde (CAS # 32085-88-4)
| Hazard Cov Cim | Xi-xaj |
| Risk Codes | 36/37/38 – Khaus 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. S37/39 - Hnav cov hnab looj tes tsim nyog thiab tiv thaiv qhov muag / ntsej muag |
| UN IDs | UN 1989 3/PG 3 |
| WGK Germany | 3 |
| FLUKA BRAND F CODE | 10-21 |
| HS Code | 291249 0 |
| Kev Ceeb Toom | Irritant |
| Hazard Class | 3 |
| Packing Group | III |
Taw qhia
3,5-difluorobenzaldehyde yog cov organic compound nrog cov tshuaj formula C7H4F2O. Cov hauv qab no yog cov lus piav qhia ntawm cov khoom, kev siv, kev npaj thiab kev nyab xeeb cov ntaub ntawv ntawm lub compound:
Khoom: 3,5-difluorobenzaldehyde yog xim tsis muaj xim rau lub teeb daj nrog cov ntxhiab tsw tshwj xeeb phenone. Nws muaj qhov ceev ntawm 1.383g / cm³, melting point ntawm 48-52 ° C, thiab boiling point ntawm 176-177 ° C. 3,5-difluorobenzaldehyde yog insoluble hauv dej, tab sis soluble hauv organic solvents xws li ethanol, ether, thiab benzene.
Kev Siv: 3,5-difluorobenzaldehyde feem ntau yog siv los ua ib qho nruab nrab hauv cov organic synthesis. Nws tuaj yeem siv los ua ke ntau yam fluorine-muaj cov organic tebchaw, tshwj xeeb tshaj yog rau cov tshuaj tiv thaiv tshuaj uas qhia txog fluorine atoms rau hauv cov organic molecules. Tsis tas li ntawd, nws tseem tuaj yeem siv los ua cov khoom siv nruab nrab rau cov tshuaj, tshuaj tua kab thiab tshuaj pleev xim.
kev npaj: txoj kev npaj ntawm 3,5-difluorobenzaldehyde tuaj yeem tau los ntawm kev ua haujlwm ntawm 3,5-difluorobenzyl methanol nrog cov kua qaub aldehyde reagent (xws li trichloroformic acid, thiab lwm yam). Cov txheej txheem hluavtaws tshwj xeeb tuaj yeem xa mus rau Organic Synthesis Handbook thiab lwm yam ntaub ntawv.
Cov ntaub ntawv kev nyab xeeb: 3,5-difluorobenzaldehyde yog cov tshuaj thiab yuav tsum tau siv kom zoo. Nws yog irritating thiab corrosive thiab tej zaum yuav ua rau puas rau lub qhov muag, tawv nqaij thiab ua pa system. Cov cuab yeej tiv thaiv tus kheej tsim nyog xws li tsom iav, hnab looj tes thiab daim npog ntsej muag yuav tsum hnav thaum siv. Ua raws li kev soj ntsuam kev nyab xeeb thiab khaws cia, tuav thiab pov tseg cov khoom kom raug. Nyob rau hauv rooj plaub ntawm kev sib chwv los yog kev noj, nrhiav kev kho mob tam sim ntawd thiab muab cov ntaub ntawv tsim nyog rau tus kws kho mob.
