3 4-Dichlorophenylhydrazine hydrochloride (CAS# 19763-90-7)
Ewu ati Aabo
| Awọn koodu ewu | R20 / 21/22 - ipalara nipasẹ ifasimu, ni olubasọrọ pẹlu awọ ara ati ti o ba gbe. 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. S37 / 39 - Wọ awọn ibọwọ ti o dara ati aabo oju / oju S36 / 37/39 - Wọ aṣọ aabo to dara, awọn ibọwọ ati aabo oju / oju. S22 - Maṣe simi eruku. S24/25 - Yago fun olubasọrọ pẹlu awọ ara ati oju. |
| UN ID | 2811 |
| WGK Germany | 3 |
| HS koodu | 29280000 |
| Akọsilẹ ewu | Ipalara / Irritant |
| Kíláàsì ewu | IKANU |
3 4-Dichlorophenylhydrazine hydrochloride (CAS# 19763-90-7) Alaye
| ohun elo | 3, 4-dichlorophenylhydrazine hydrochloride jẹ agbedemeji elegbogi ti o le ṣee lo lati ṣeto biphenylpyridine. |
| igbaradi ọna | yellow 3,4-dichloroaniline (38.88g,0.2399mol) ti wa ni tituka ni dichloroethane (30ml), ki o si 12mol/L concentrated hydrochloric acid (70ml,0.84mol) ti wa ni afikun, sodium nitrite (18.06g,0.261mol) ti wa ni afikun, awọn na ojutu lenu ti wa ni rú ni 5 ℃ fun 30min, ati awọn Omi ti o ṣalaye ti wa ni filtered jade, ju silẹ si 140ml ti ojutu sulfite soda ti o ni ninu (90.71g,0.7197mol), fesi ni 80 ℃ fun bii wakati 3, fesi lati gbejade 3,4-dichlorophenylhydrazine, ṣafikun nipa (60ml,0.72mol) hydrochloric ogidi acid fun 1 wakati, aruwo moju ni yara otutu, àlẹmọ lati gba 3,4-dichlorophenylhydrazine hydrochloride funfun ri to 46.1g, ikore: 90%. |
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