p-Phenylene diamine; 1,4-diaminobenzene

White crystal. Inoita rosy muchiedza. Inoshanduka yepepuru mumhepo. Kunyungudika 140 ℃. Boiling point 267 ℃. Inogona kuderedzwa. Zvishoma kunyungudika mumvura inotonhora, soluble mu ethanol, ether, chloroform uye benzene. Inopindirana neinorganic acids kuita munyu unonyungudika nyore mumvura. Inoshandiswa mukugadzira azo dhayi nesarufa dhayi, nezvimwewo, uye inoshandiswa sedhayi dzemvere (Fur Black D, Ursol D kana Fur Nhema D, Ursol D kana Fur Nhema D) uye vanogadzira maajenti. Ichi chigadzirwa ndecheCategory 3 carcinogens. Iyo inogadzirwa nekuderedzwa kwep-nitroaniline.

Nzira yekugadzira

Inowanikwa nekudzikisa p-nitroaniline nehupfu hwesimbi mune acidic medium. Isa hupfu hwesimbi muhydrochloric acid, kupisa kusvika 90 ° C, uye wedzera p-nitroaniline uchikurudzira. Mushure mekuwedzera kwapera, ita pa 95-100 ° C kwemaawa 0.5, uye wobva wawedzera concentrated hydrochloric acid dropwise kuti upedze Chemicalbook reduction reaction. Mushure mekutonhodza, gadzirisa nesaturated sodium carbonate solution kusvika pH 7-8, bika uye sefa uchipisa, wogeza keke resefa nemvura inopisa. Sanganisa iyo filtrate uye yekuwachisa mvura, simbisa pasi pekumanikidzwa kwakaderedzwa, penya nekutonhodza kana distill pasi pekumanikidzwa kwakaderedzwa kuwana p-phenylenediamine ine goho re95%.

Chemical properties

Zita rechiChinese: p-Phenylenediamine
Zita rekunze: p-Phenylenediamine
Mushonga wekemikari: C6H8N2
Molecular uremu: 108.14
Nhamba yekunyoresa yeCAS: 106-50-3
Kunyungudika: 139 ℃
chitarisiko: Makristasi machena kusvika kulavender

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