3 4-Dichlorophenylhydrazine hydrochloride (CAS# 19763-90-7)
Kotsi le Polokeho
Likhoutu tsa Kotsi | R20/21/22 – E kotsi ka ho hema, ho kopana le letlalo le ha e koetsoe. R36/37/38 – Ho tena mahlo, tsamaiso ya ho hema le letlalo. |
Tlhaloso ea Tšireletseho | S26 - Ha u kopana le mahlo, hlatsoa hang-hang ka metsi a mangata 'me u batle keletso ea bongaka. S37/39 - Apara liatlana tse loketseng le tšireletso ea mahlo / sefahleho S36/37/39 - Apara liaparo tse loketseng tsa tšireletso, liatlana le tšireletso ea mahlo / sefahleho. S22 - U se ke ua hema lerole. S24/25 - Qoba ho kopana le letlalo le mahlo. |
Li-ID tsa UN | 2811 |
WGK Jeremane | 3 |
Khoutu ea HS | 29280000 |
Tsebiso ea Kotsi | E kotsi/ E tenang |
Sehlopha sa Likotsi | MOQEBI |
3 4-Dichlorophenylhydrazine hydrochloride (CAS# 19763-90-7) Boitsebiso
kopo | 3, 4-dichlorophenylhydrazine hydrochloride ke setsi sa meriana se ka sebelisoang ho lokisetsa biphenylpyridine. |
mokhoa oa ho lokisetsa | motsoako 3,4-dichloroaniline (38.88g,0.2399mol) e qhibiliha ka dichloroethane (30ml), ebe 12mol / L concentrated hydrochloric acid (70ml,0.84mol) e kenyelletsoa, sodium nitrite (18.06g,0.261 themol) e eketsoa. tharollo ea karabelo e hlohlelletsoa ho 5 ℃ bakeng sa 30min, 'me mokelikeli o hlakisitsoeng oa tlhotloa, o theohela ho 140ml ea sodium sulfite solution e nang le (90.71g,0.7197mol), e arabela ho 80 ℃ ka lihora tse ka bang 3, e arabela ho hlahisa 3,4-dichlorophenylhydrazine, eketsa ka (60ml,0.72mol) concentrated hydrochloric acid bakeng sa 1 hora, hlohlelletsa bosiu bo le bong mocheso oa kamore, filthara ho fumana 3,4-dichlorophenylhydrazine hydrochloride tšoeu e tiileng 46.1g, lihlahisoa: 90%. |
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