Calcium nitrate. Cov khoom thiab cov kev siv

Calcium nitrate, kuj paub los ntawm cov npe tshuaj "calcium nitrate", "calcareous or calcium nitrate", yog ib qho muaj ntsev tsawg ntawm nitric acid, uas yog cov xim tsis muaj kaub pob zeb. Lub compound muaj qib siab ntawm hygroscopicity. Qhov ntom ntawm qhov compound yog 2.36 g / cm³, nws cov melting point yog 561 ° C, thiab kub taw tes yog 151 ° C. Tsuas yog cov xeeb ceem qis no yog cov khoom uas tsis yog-flammable, explosion-proof substance. Nyob rau hauv qhov kub kub ntawm -60 ° C rau +155 ° C, stability yog manifested, uas distinguishes calcium nitrate. Lub mis ntawm cov tshuaj siv yog Ca (NO3) 2.

Calcium nitrate yog tau los ntawm cov kua nitrogen oxides nrog cov kua mis los yog los ntawm HNO3 los limestone. Cov tshuaj calcium nitrate yog tau los ntawm txoj kev uas tsis tshua muaj kev kub ntxhov ntawm HNO3 nrog ntuj limestone.

Calcium nitrate yog ib qho muaj sia ntawm tej kab mob hauv lub cev uas muaj cov kab mob calcium uas tsis haum rau lub cev. Calcium nitrate yog tsim rau tag nrho cov xau. Tshwj xeeb tsim nyog yog nws siv on acidified, Sandy, alkaline xau. Calcium yog ib qho tseem ceeb rau kev noj qab nyob thiab kom zoo kev loj hlob ntawm tsob nroj ntaub so ntswg, ua lub dag lub zog ntawm lawv cov cell phab ntsa, kev txhim kho qhov zoo ntawm cov txiv hmab txiv ntoo. Calcium nitrate pab kho qhov khoom nthuav tawm, muab lub neej txuag ntawm qhov khoom ntawd. Nws kuj yog siv rau kev tiv thaiv kab mob provoked los ntawm calcium deficiency (tub ntxhais los yog apical rot, nplooj ntug hlawv thiab lwm tus). Fertilizer yog siv nyob rau hauv daim ntawv kua. Rau hydroponic tshuab calcium nitrate - tsuas yog txoj kev kom tau ib tug dej-soluble calcium.

Kev npaj ntawm lub compound nyob rau hauv daim ntawv ntawm granules thiab muaju nthuav dav lub qhov muaj ntawm nws daim ntawv thov. Granulated calcium nitrate tsis caked, tsis hygroscopic, yooj yim rau siv.

Crystalline calcium nitrate yog dav siv hauv kev tsim kho thiab kev lag luam. Nws yog ib tug complex additive nkag tau rau hauv cov pob zeb thiab mortars nyob rau hauv thiaj li yuav txhim kho lawv lub zog nyob rau hauv kev tsim kho ntawm lub tsev pob zeb ua thiab ua kev reinforced lug. Cov tebchaw no yog siv qhob zom txhim ua kom yooj yim. Lawv nce lub chav dej ntawm cov dej tsis ruaj ntawm cov pob zeb, nce lub sij hawm ntawm nws qhov chaw tsis tas hloov tus khiav (rheology) vim kev siv cov yas yas. Calcium nitrate yog siv los ua kom cov cua txias tuaj, lub zog ntawm pob zeb tawg, txo cov dej deformations ntawm cov pob zeb thiab tawg, retardation corrosion ntawm reinforcing steel siv nyob rau hauv concretes los ntawm high chloride cov ntsiab lus.

Nws kuj yog siv nyob rau hauv qhov kev npaj ntawm cements, uas yog npaj rau cov cementing ntawm cov roj qhov dej, nyob rau hauv qhov kev npaj ntawm hauj tov siv nyob rau hauv lub kho ntawm cov roj qhov dej, xws li drilling kua.

Calcium nitrate yog siv nyob rau hauv pyrotechnics, raws li yog ib tug ntawm cov constituent ntsiab ntawm explosives. Muaj tseeb, nws siv vim muaj zog hygroscopicity yog me ntsis txwv.

Calcium nitrate Nws tseem siv tau los ua kev tsim cov tshuaj reagents, cov cav qhuav, cov xim fiberglass thiab cov khoom siv hauv tsev.