Formalin: A 37% aqueous (dej) tov ntawm formaldehyde, roj pungent, nrog cov tshuaj HCHO, siv los ua tshuaj tua kab mob, tshuaj tua kab mob, thiab tshwj xeeb tshaj yog niaj hnub no raws li ib tug fixative rau histology (kev kawm ntawm cov ntaub so ntswg nyob rau hauv lub microscope).
Formalin yog dab tsi thiab nws siv?
Formaldehyde yog cov ntxhiab tsw muaj zog, tsis muaj xim tsis muaj roj siv los ua cov khoom siv hauv tsev thiab ntau yam khoom siv hauv tsev. … Thaum yaj hauv dej nws hu ua formalin, uas feem ntau yog siv los ua tshuaj tua kab mob, thiab ua cov tshuaj tua kab mob hauv tsev pam tuag thiab chaw kuaj mob.
tshuaj formalin yog dab tsi?
Formaldehyde (HCHO), tseem hu ua methanal, ib qho organic compound, qhov yooj yim ntawm aldehydes, siv ntau ntau hauv ntau yam kev tsim tshuaj. Nws yog tsim los ntawm vapour-theem oxidation ntawm methanol thiab feem ntau muag li formalin, 37 feem pua aqueous tov.
Formalin ua los ntawm dab tsi?
Formalin Composition
Formalin yog dej-raws li cov kua dej ntawm formaldehyde gas. Nws muaj li ntawm 40% formaldehyde gas (los ntawm ntim) lossis 37% formaldehyde roj (los ntawm qhov hnyav), nrog rau ib qho me me ntawm stabilizer. … Methylene glycol yog cov khoom tseem ceeb ntawm kev ua kom tiav cov dej ntawm formaldehyde gas.
Vim li cas formaldehyde siv?
Ntxiv rau, formaldehyde feem ntau yog siv los ua ib qho tshuaj fungicide, tshuaj tua kab mob, thiabtshuaj tua kab mob, thiab ua cov tshuaj tua kab mob hauv tsev kho mob thiab chaw kuaj mob. Formaldehyde kuj tshwm sim nyob rau hauv ib puag ncig. Nws yog tsim los ntawm me me los ntawm feem ntau cov kab mob nyob ua ib feem ntawm cov txheej txheem metabolic.
