3 4-Difluorotoluene (CAS # 2927-34-6)
| Hazard Cov Cim | F - Flammable |
| Risk Codes | 10 – Flammable |
| Kev nyab xeeb piav qhia | S16 - Khaws kom deb ntawm qhov chaw hluav taws xob. S29 - Tsis txhob muab tso rau hauv qhov dej. S33 - Siv cov kev tiv thaiv kev tiv thaiv zoo li qub. |
| UN IDs | UN 1993 3/PG 3 |
| WGK Germany | 3 |
| HS Code | 2 903990 |
| Kev Ceeb Toom | Flamable |
| Hazard Class | 3 |
| Packing Group | II |
Taw qhia
3,4-difluorotoluene yog cov organic compound nrog cov tshuaj formula C7H6F2. Nws yog cov kua uas tsis muaj xim nrog cov ntxhiab tsw tshwj xeeb. Hauv qab no yog cov lus piav qhia ntxaws txog qhov xwm txheej, kev siv, kev npaj thiab kev nyab xeeb ntawm 3,4-difluorotoluene:
Xwm:
-Cov tsos mob: cov kua tsis muaj xim
-Saj: Tshwj xeeb aromatic tsw
- Kub taw tes: 96-97 ° C
Qhov ceev: 1.145g / cm³
-Solubility: Insoluble hauv dej, soluble hauv organic solvents
Siv:
-3,4-difluorotoluene tuaj yeem siv los ua ib qho tseem ceeb nruab nrab ntawm cov organic synthesis.
-Nws tuaj yeem siv los ua cov tshuaj, tshuaj zawv plaub hau, tshuaj tua kab thiab lwm yam tshuaj.
-Nws tseem tuaj yeem siv los ua cov khoom siv raw rau cov khoom siv hluav taws xob.
Txoj kev:
-3,4-difluorotoluene muaj ntau txoj kev npaj, feem ntau yog tau los ntawm hydrogenation txo cov tshuaj tiv thaiv p-nitrotoluene. Cov kauj ruam tshwj xeeb yog:
1. Ua ntej, P-nitrotoluene reacts nrog ntau tshaj hlau diammonium sulfate kom tau p-nitrotoluene hlau diammonium ntsev.
2. Hydrogen yog ntxiv, thiab p-nitrotoluene hlau diammonium ntsev yog raug txo cov tshuaj tiv thaiv nyob rau hauv lub xub ntiag ntawm ib tug hlau catalyst.
3. Thaum kawg, 3,4-difluorotoluene raug ntxuav los ntawm distillation.
Cov ntaub ntawv kev nyab xeeb:
-3,4-difluorotoluene feem ntau pom tau tias muaj kev nyab xeeb nyob rau hauv ib txwm siv. Txawm li cas los xij, tseem yuav tsum ua raws li cov txheej txheem kev nyab xeeb uas cuam tshuam.
-Nws yog cov kua ua kua thiab yuav tsum tsis txhob sib cuag nrog hluav taws kub thiab kub.
-Cov hnab looj tes tiv thaiv tsim nyog, tsom iav thiab khaub ncaws tiv thaiv raug pom zoo siv thiab tuav.
- Khaws deb ntawm zaub mov, dej thiab menyuam yaus ncav cuag.
-Thaum muaj xwm txheej tshwm sim los yog nqos tau yuam kev, nrhiav kev pab kho mob tam sim ntawd thiab tso cov khoom lag luam lossis lub thawv rau tus kws kho mob.
