Cov khoom siv raw yooj yim siv rau kev tsim cov dyestuff yog Benzene, Toluene, Xylene thiab Naphthalene (BTXN). Cov ntaub ntawv nyoos no tau pib hloov mus rau hauv cov xim nruab nrab los ntawm nitration, sulfonation, amination, txo thiab lwm yam txheej txheem tshuaj.
Yuav ua li cas dyes tsim?
Dyes yog synthesized nyob rau hauv lub reactor, lim, qhuav, thiab blended nrog lwm yam additives los tsim cov khoom kawg… Feem ntau, cov organic tebchaw xws li naphthalene yog reacted nrog ib tug acid. los yog alkali nrog rau qhov nruab nrab (xws li nitrating lossis sulfonating compound) thiab cov kuab tshuaj los tsim cov xim sib tov.
dyestuffs yog dab tsi?
Feem ntau ntawm cov xim ntuj yog muab los ntawm cog qhov chaw: cag, berries, tawv ntoo, nplooj, ntoo, fungi thiab lichens. Nyob rau hauv lub xyoo pua 21st, feem ntau dyes yog hluavtaws, piv txwv li, yog neeg tsim los ntawm petrochemicals. Cov txheej txheem tau pioneer los ntawm J. Pullar thiab Cov Tub hauv Scotland.
Yuav ua li cas yog cov hauv qab no siv los tsim cov dyes?
Sulfuric acid yog siv rau hauv kev tsim cov xim, xws li xim thiab luam ntawv number case.
Yuav ua li cas cov xim hluavtaws ua?
Synthetic organic dyes los ntawm cov roj crudeCov xim tshwj xeeb, yam ntxwv, thiab ntau yam yog los ntawm cov tshuaj tau los ntawm cov khoom siv roj av. Lawv tsis tshwm sim nyob rau hauv qhov, yog li peb categorize lawv li manmade dyes. "Organic" los ntawm lub tswv yim tias lawv tseem tau los ntawm cov khoom siv organic, qhov no, roj.
