Lub hauv paus ntsiab lus ua haujlwm ntawm sodium hydrogen sulfate

Lub luag haujlwm tseem ceeb ntawm anhydrous sodium sulfates yog ua los ntawm desiccant, tshem tawm cov dej los ntawm cov organic tebchaw, tshwj xeeb tshaj yog cov kuab tshuaj, los ntawm kev tsim cov hydrated crystals nrog dej molecules.

Sodium sulfate muaj cov tshuaj formula Na2SO4 thiab los ntawm ntau hom: anhydrous, decahydrate, heptahydrate thiab pentahydrate. Txawm li cas los xij, daim ntawv anhydrous yog cov desiccant feem ntau siv vim nws tshem tawm dej los ntawm cov kua. Nws mechanism ntawm kev txiav txim yog raws li lub hauv paus ntsiab lus ntawm lub cev qhuav dej. Nyob rau hauv lub xub ntiag ntawm dej, anhydrous sodium sulfate absorbs dej nyob rau hauv ib tug txheej txheem hu ua adsorption. Cov txheej txheem no suav nrog cov dej molecules txuas rau saum npoo ntawm sodium sulfate hais. Raws li ntau cov dej molecules yog adsorbed, cov sodium sulfate hais pib tsim hydrate crystals, uas yooj yim lim los yog tshem tawm ntawm cov kua. Thaum lub hydrate siv lead ua tau tsim, anhydrous sodium sulfate tsis tuaj yeem nqus dej molecules ntxiv lawm vim tias txhua qhov chaw muaj adhesion ntawm qhov chaw me me twb tau nyob hauv dej molecules. Qhov no txhais tau hais tias anhydrous sodium sulfate tau mus txog nws lub peev xwm nqus tau siab tshaj plaws thiab tsis muaj txiaj ntsig zoo ntawm kev tshem dej ntawm cov kua.

Hydrated sodium sulfate crystals yog ib qho yooj yim kom paub qhov txawv ntawm cov ntaub ntawv anhydrous vim lawv feem ntau yog dawb thiab hmoov, thaum cov ntaub ntawv anhydrous feem ntau yog crystalline thiab granular. Tsis tas li ntawd, hydrate crystals yog soluble heev hauv dej, thaum cov ntaub ntawv anhydrous tsis yog. Hauv cov ntawv thov kev lag luam, anhydrous sodium sulfate feem ntau yog siv los ua cov kuab tshuaj kom qhuav thiab hauv kev tsim cov tshuaj detergents thiab iav. Hauv cov chaw soj nstuam, nws feem ntau yog siv los ntxuav cov organic tebchaw thiab tshem tawm cov dej los ntawm cov tshuaj tiv thaiv.

Nyob rau hauv luv luv, anhydrous sodium sulfate yog ib qho zoo thiab dav siv desiccant uas nws lub luag hauj lwm yog tsim hydrated crystals nrog dej molecules kom tshem tawm noo noo los ntawm cov kua. Nws cov txheej txheem ntawm kev ua haujlwm yog ua raws li lub hauv paus ntsiab lus ntawm lub cev qhuav dej thiab feem ntau yog siv rau hauv ntau yam kev lag luam thiab kev sim.