(E) - Methyl 4-bromocrotonate (CAS # 6000-00-6)
Ewu ati Aabo
| Awọn aami ewu | Xi - Irritant |
| Awọn koodu ewu | R37 / 38 - Irritating si eto atẹgun ati awọ ara. R41 - Ewu ti pataki ibaje si oju R36 / 37/38 - Irritating si oju, eto atẹgun ati awọ ara. |
| Apejuwe Abo | S26 - Ni ọran ti olubasọrọ pẹlu awọn oju, fi omi ṣan lẹsẹkẹsẹ pẹlu ọpọlọpọ omi ki o wa imọran iṣoogun. S39 - Wọ oju / aabo oju. |
| WGK Germany | 3 |
| RTECS | GQ3120000 |
| FLUKA BRAND F koodu | 8-9 |
| HS koodu | 29161900 |
Ọrọ Iṣaaju
Trans-4-bromo-2-butenoic acid methyl ester jẹ omi ti ko ni awọ pẹlu õrùn pataki kan. O ni iwuwo ti o to 1.49g/cm3, aaye farabale ti o to 171-172°C, ati aaye filasi kan ti o to 67°C. O jẹ insoluble ninu omi ni iwọn otutu yara, ṣugbọn o jẹ miscible pẹlu awọn olomi Organic gẹgẹbi ethanol, ether, ati bẹbẹ lọ.
Lo:
Trans-4-bromo-2-butenoic acid methyl ester jẹ lilo akọkọ bi agbedemeji ni awọn aati iṣelọpọ Organic. O le ṣee lo fun iṣelọpọ ti awọn agbo ogun Organic miiran, fun apẹẹrẹ fun iṣelọpọ ti awọn agbo ogun ni kemistri oogun ati kemistri pesticide.
Ọna Igbaradi:
Trans-4-bromo-2-butenoic acid methyl ester ni a maa n pese sile nipasẹ iṣesi bromination ati iṣesi esterification. Butene ti kọkọ ṣe atunṣe pẹlu bromine lati fun 4-bromo-2-butene, eyiti o jẹ ki o jẹ ki o ni itọsi pẹlu methanol lati fun trans-4-bromo-2-butenoic acid methyl ester.
Alaye Abo:
Trans-4-bromo-2-butenoic acid methyl ester jẹ iru epo-ara Organic ati ohun elo aise kemikali, eyiti o ni eewu kan. O jẹ irritating ati ibajẹ, ati olubasọrọ pẹlu awọ ara, oju tabi atẹgun atẹgun le fa irritation ati ipalara. Olubasọrọ taara yẹ ki o yago fun lakoko lilo, ati pe aabo atẹgun ti o yẹ ati aṣọ aabo yẹ ki o mu. Ni afikun, o yẹ ki o ṣe itọju lati yago fun olubasọrọ pẹlu awọn oxidants ati awọn acids ti o lagbara nigba ipamọ lati ṣe idiwọ awọn aati ti o lewu. Ti o ba nilo lati lo agbo-ara yii, jọwọ ṣiṣẹ ni ile-iṣẹ ailewu ki o tẹle awọn ilana iṣiṣẹ ailewu ti o yẹ.
