6-Bromo-7-chloro-3H-imidazo[4 5-b]pyridine (CAS # 83472-62-2)

Ọrọ Iṣaaju

3-Methyl-2,4-dichlorobenzoic acid jẹ ẹya Organic yellow. Atẹle jẹ ifihan si iseda rẹ, lilo, ọna igbaradi ati alaye aabo:

Didara:

- Irisi: Alailowaya kirisita ti o lagbara

- Solubility: tiotuka ni awọn nkan ti ara ẹni gẹgẹbi ethanol, ether ati methylene kiloraidi, insoluble ninu omi

Lo:

- Awọn ipakokoropaeku: 3-methyl-2,4-dichlorobenzoic acid jẹ herbicide ti o gbooro pupọ ti o le ṣee lo lati ṣakoso idagbasoke ti awọn oriṣiriṣi awọn èpo, gẹgẹbi koriko ni ayika awọn irugbin bii kale, awọn ẹfọ, ati agbado.

Ọna:

3-Methyl-2,4-dichlorobenzoic acid ni a le pese sile nipasẹ chlorination ti p-methylanise ether (3-methylanisole). Ọna igbaradi pato le ni awọn igbesẹ wọnyi:

Tu 3-methylanisole sinu anhydrous hydrochloric acid.

Sodium chlorite (NaClO) tabi potasiomu chlorite (KClO) ni a fi kun bi awọn orisun chlorine.

Adalu ifaseyin naa ni a ru ni iwọn otutu kekere, nigbagbogbo laarin 0-5 °C.

Lẹhin ti ifasẹyin ti pari, adalu naa jẹ filtered tabi fa jade lati gba ọja 3-methyl-2,4-dichlorobenzoic acid kan.

Alaye Abo:

- 3-Methyl-2,4-dichlorobenzoic acid le fa ipalara si ayika, ati pe akiyesi yẹ ki o san si iṣakoso lilo ati sisọnu awọn egbin.

- Ifarakanra taara pẹlu nkan na le jẹ irritating si awọ ara, oju, ati eto atẹgun, ati olubasọrọ taara yẹ ki o yago fun.

- Wọ ohun elo aabo ti o yẹ gẹgẹbi awọn ibọwọ, awọn goggles, ati awọn iboju iparada nigba lilo.

- O yẹ ki o ṣe itọju lati yago fun idapọ pẹlu awọn kemikali miiran lakoko ibi ipamọ ati mimu, ati yago fun ina ati awọn iwọn otutu giga.

- Jọwọ ka ati tẹle awọn iwe data aabo ti o yẹ ati awọn itọnisọna iṣẹ ṣaaju lilo. …