p-Phenylene diamine1,4-diaminobenzene

Siv lead ua dawb. Hloov liab dawb hauv lub teeb. Hloov ntshav hauv huab cua. Lub sijhawm yaj 140 ℃. Lub sijhawm kub 267 ℃. Muaj peev xwm hloov pauv tau. Yaj me ntsis hauv dej txias, yaj hauv ethanol, ether, chloroform thiab benzene. Nws reacts nrog inorganic acids los tsim cov ntsev uas yooj yim yaj hauv dej. Siv rau hauv kev tsim cov xim azo thiab cov xim sulfur, thiab lwm yam, thiab siv ua cov xim plaub (Fur Black D, Ursol D lossis Fur Black D, Ursol D lossis Fur Black D) thiab cov neeg sawv cev tsim khoom. Cov khoom no yog qeb 3 carcinogens. Nws yog tsim los ntawm kev txo qis ntawm p-nitroaniline.

Txoj kev tsim khoom

Nws tau txais los ntawm kev txo p-nitroaniline nrog cov hmoov hlau hauv cov kua qaub nruab nrab. Muab cov hmoov hlau rau hauv hydrochloric acid, ua kom sov rau 90 ° C, thiab ntxiv p-nitroaniline thaum do. Tom qab ntxiv tiav lawm, ua kom sov ntawm 95-100 ° C rau 0.5 teev, thiab tom qab ntawd ntxiv cov kua qaub hydrochloric acid uas muaj concentrated dropwise kom ua tiav Chemicalbook txo cov tshuaj tiv thaiv. Tom qab txias, neutralize nrog cov kua sodium carbonate saturated rau pH 7-8, rhaub thiab lim thaum kub, thiab ntxuav lub ncuav mog qab zib lim nrog dej kub. Ua ke cov lim dej thiab cov kua ntxuav, concentrate nyob rau hauv qab txo qis siab, crystallize los ntawm kev txias lossis distill nyob rau hauv qab txo qis siab kom tau txais p-phenylenediamine nrog cov txiaj ntsig ntawm 95%.

Cov khoom siv tshuaj lom neeg

Lub npe Suav: p-Phenylenediamine
Lub npe txawv teb chaws: p-Phenylenediamine
Cov mis tshuaj: C6H8N2
Qhov hnyav molecular: 108.14
CAS tus lej rau npe: 106-50-3
Melting point: 139 ℃
tsos: Dawb rau lavender siv lead ua

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