4-Bromoanisol CAS Nr 104-92-7
Risk thiab Safety
| Hazard Cov Cim | Xn – Ua phem |
| Kev nyab xeeb piav qhia | S23 - Tsis txhob ua pa. S24/25 - Tsis txhob sib cuag nrog daim tawv nqaij thiab qhov muag. |
| WGK Germany | 2 |
| RTECS | BZ8501000 |
| FLUKA BRAND F CODE | 8 |
| TSCA | Yog lawm |
| HS Code | 29093038 ib |
| Toxicity | LD50 orl-mus: 2200 mg/kg GISAAA 44(12), 19,79 |
Cov ntaub ntawv siv
| Siv | raw khoom ntawm fragrances thiab dyes; Organic synthesis thiab tshuaj intermediates. siv los ua cov kuab tshuaj, kuj siv rau hauv cov organic synthesis Qhov nruab nrab ntawm Fuke tshuaj Taishu. organic synthesis. Solvent. |
| txoj kev tsim khoom | 1. Muab los ntawm cov tshuaj tiv thaiv p-bromophenol nrog dimethyl sulfate. Cov p-bromophenol tau yaj hauv dilute sodium hydroxide tov, txias kom qis dua 10 ° c, thiab tom qab ntawd dimethyl sulfate tau maj mam ntxiv nrog nplawm. Cov tshuaj tiv thaiv kub tuaj yeem nce mus rau 30 ° C., rhuab mus rau 40-50 ° C. Thiab nplawm rau 2H. Cov roj txheej yog sib cais, ntxuav nrog dej kom txog thaum nruab nrab, qhuav nrog anhydrous calcium chloride, thiab distilled kom tau cov khoom tiav. Nrog anisol ua raw khoom, bromination cov tshuaj tiv thaiv nrog bromine nyob rau hauv glacial acetic acid tau nqa tawm, thiab thaum kawg nws tau los ntawm kev ntxuav thiab distillation nyob rau hauv lub siab txo. p-bromophenol yog siv los ua cov khoom siv raw rau cov tshuaj dimethyl sulfate hauv cov tshuaj alkaline. Txij li thaum cov tshuaj tiv thaiv yog exothermic, dimethyl sulfate yog maj mam ntxiv kom qhov kub ntawm cov tshuaj tiv thaiv da dej yog 50 ° C. Los yog qis dua. Tom qab ua tiav cov tshuaj tiv thaiv, cov tshuaj tiv thaiv sib tov raug tso cai sawv ntsug thiab cov txheej txheem raug cais tawm. Cov txheej txheem organic tau muab tshem tawm thiab muab rho tawm nrog ethanol lossis diethyl ether. Lub sij hawm rho tawm tau distilled kom rov qab tau cov extractant. |
| qeb | tshuaj lom |
| qib toxicity | lom |
| Mob toxicity | qhov ncauj-nas LD50: 2200 mg/kg; Intraperitoneal-nas LD50: 1186 mg/kg |
| flammability tej yam ntxwv | flammable nyob rau hauv qhib nplaim; Toxic bromide pa luam yeeb los ntawm combustion |
| khaws cia thiab kev thauj mus los yam ntxwv | Lub warehouse yog ventilated thiab qhuav ntawm qhov kub thiab txias, cais cia cov khoom noj additives |
| extinguishing tus neeg sawv cev | carbon dioxide, ua npuas ncauj, xuab zeb, dej pos huab. |
Sau koj cov lus ntawm no thiab xa tuaj rau peb
