Poov tshuaj dichromate - physicochemical zog thiab teb daim ntawv thov

Poov tshuaj dichromate yog dua li uas tsis yog-caking txiv kab ntxwv muaju (tej zaum reddish) uas yog nkag soluble nyob rau hauv aqueous nruab nrab thiab yog zoo li tus zoo li ib tug yuav luag tsis paub koob los yog daim hlau. Thaum interacting nrog cov tshuaj yeeb dej caw aqueous tov yuav acidic.

Poov tshuaj dichromate - heev tshuaj lom, carcinogen thiab muaj zog oxidants. Tshuaj tsuag cov tshuaj yuav ua kom puas daim tawv nqaij, pob txha mos, thiab nqus tau pa ntawm vapors - cov hlab cua.

Thaum ib tug kub ntawm txog 1300 ° C raws li ib tug tshwm sim ntawm cov kev pauv cov tshuaj tiv thaiv ntawm sodium dichromate thiab poov tshuaj tshuaj dawb yog npaj poov tshuaj dichromate, uas nws mis K ₂ Kr ₂ O _7:

2KCl + Na ₂ Kr ₂ O ₇ → K ₂ Kr ₂ O ₇ + 2NaCl.

Qhov no tshuaj yog siv nyob rau hauv qhov kev lag luam. Kev poov tshuaj bichromate yog siv rau zus tau tej cov ntais ntawv qhuav roj teeb, inorganic pigments, xim coatings raws li zoo raws li nyob rau hauv cov organic synthesis - tau txais ntau hom tshuaj tebchaw.

Liab-daj tshuaj ntawm poov tshuaj dichromate stain litmus daj liab xim. Thaum ntxiv reflux cov tshuaj tov ua ib tug yam ntxwv tsaus-liab xim. Thaum lub kub mus txog 398 ^o C poov tshuaj dichromate melts thiab dhau mus ua ib cov kua uas tsaus nti xim av xim, uas nyob rau tom ntej txias solidifies thiab crystallizes. Saum toj no 500 ^o C cov yam khoom uas yog kiag li decomposed rau oxygen tsim, chromium oxide thiab poov tshuaj chromate.

Physicochemical zog ntawm poov tshuaj dichromate

Cia thiab thauj ntawm tshuaj muaj siab teeb meem hauv chav kawm ntawv

Kev poov tshuaj dichromate yuav thauj los ntawm tej yam them thauj, tsuas yog rau tej huab cua. Tshuaj, tau ntim rau hauv tshwj xeeb ntim npaj rau ib tug-lub sij hawm siv, koj yuav kis tau ib tug qhib railway dov Tshuag. Kev poov tshuaj dichromate yuav tsum tau muab cia rau hauv qhuav cia chaw, thaum cov khoom nyob rau hauv tshwj xeeb ntim ib lo lus uas peb yuav tsum muab cia rau hauv lub qhib cua, txawm peem rau nrog ib tug nyuaj txheej rau dej runoff.

Ntim ntawm Tshuaj uas yuav mus rau cov thawj cov hoob kawm ntawm kev ruaj

Kev poov tshuaj dichromate yog fej nyob rau hauv tshwj xeeb uas tsim steel drums raws li hnab yas, muaj raws ntawm tsib khaubncaws sab nraud povtseg, uas 50 kg. Tso ntim rau hauv cov mos mos ntim, tshwj xeeb lub hom phiaj rau ib siv.

Taag ib tug hauv chav kawm ntawv ntawm kev txaus ntshai rau tshuaj lom neeg

Kev poov tshuaj dichromate tawg thiab hluav taws teeb meem. Lub degree ntawm cawv rau tib neeg lub cev nws thawj teeb meem chav kawm ntawv yog muab. Thaum ua hauj lwm nrog ib tug tshuaj yuav tsum muaj cai muaj kev ruaj ntseg, yuav tau ceev faj heev thiab attentive thiab yuav thov PPE daim tawv nqaij thiab ua pa kabmob.