Dichromate potassium

dichromate potassium Maandooriyaha leeyahay magacyo dhowr ah, kuwaas oo, si ay shahaado ka weyn ama ka yar oo ah inta jeer, waxaa loo isticmaalaa ku xiran berrinkii isticmaalka mukhaadaraadka laftiisa. Dhaqan ahaan, aragtida kiimikada ah ee inta badan la isticmaalo magaca potassium dichromate ama Chrompick potassium. Marka ay timaado in loo isticmaalo warshadaha, halka xarunta this yaqaan Chrompick. Waxaa aad muhiim u ah in la fahmo sida saxda ah nooca xidhiidh ee su'aasha, maxaa yeelay, in isticmaalka maalin walba Chrompick waxaa kaloo loo yaqaan formula sodium dichromate Na2Cr2O7 * 2H2O. formula Chemical bichromate potassium - K2Cr2O7.

The guryaha jirka ah ee bichromate potassium soo socda. Dusha, walax tani waa kiristaalo orange-midab leh, ah crystal daaqaddii ka mid ah taas oo ah variable sarkhaansan yihiin heerkulka. Marka miraheeda in 257 ° C daaqaddii triclinic uu leeyahay qaab kiristaalo hal, iyo marka heerkulka ka badatey 257 ° C, badala si foom monoclinic.

walax dichromate potassium leeyahay heerkul barafku ka mid ah 396 ° C, iyadoo ay koror ka badan 500 ° C decomposes walax on K2CrO4, Cr2O3 iyo oksijiin. bichromate potassium cuf gaarka ah waa 2,69 g / cm3. dichromate potassium waa heer sare L. in xal aqueous:

- at heerkul ah 0 ° C, 100 garaam oo biyo ah waxaa gabi ahaanba kala diri 4.6 grams of bichromate potassium,

- at heerkul ah 25 ° C, tiro la mid ah oo biyo ah in gebi ahaanba hore u kala diri karaa 15.1 garaam, iyo heerkulka lagu sara 50 ° C - waa 37.7 garaam.

In alcohols, tus, ethanol, potassium dichromate yar L..

bichromate potassium foomamka eutectic a - farcan xal dareere ah oo crystallizes hoos heerkulka ugu yar waayo, kooxdan oo ah walxaha formula qaab compositional kuwaas oo - H2O - K2Cr2O7 la content bichromate potassium 4.30% by miisaanka. Heerkulka barafku ka mid ah xarunta kaliya 0,63 ° C iyo waxa kulul at 104,8 ° C (bichromate potassium in xal - 52% by miisaanka).

C lug leh walxaha sida dichromate potassium, falcelinta ka dhacay warbaahinta acidic, haddii ay ka kooban tahay xal aqueous. Maandooriyaha laftiisa ayaa sidoo kale ah wakiilka oksidheeyeyaal xoog leh, tusaale ahaan, by falcelinta ee bichromate potassium iyo baaruuddu ka helay K2SO4 milix iyo chromium xabagta.

By ficil la foomamka polihromaty bichromate acids potassium sulfuric iyo nitric. Marka kulaylinta isku kooban xarunta iyo this hydrogen waxaay sheegayaan waxaa helay si fudud kiristaalo waxaay sheegayaan waxyaabaha qarxa kuwaas oo, ee jeedo, waa qayb muhiim ah oo ka mid ah waxyaabaha qarxa.

Industrially diyaarinta bichromate potassium waa la fuliyay by reaction sarrifka la Na2Cr2O7 KCl, at taas oo xal waa kuleelka si heer kulka weyn - oo ku saabsan 1000 - 1300 ° C.

dichromate potassium waxaa loo isticmaalaa, guryaha kiimikada ee kuwaas oo ku tilmaamay kor ku xusan ee soo saaridda of formaldehyde kala duwan ee dharka iyo maqaar warshadaha, waxaa loo adeegsanayaa in maqaar warshadaynta. codsiga qaybiyey processing qoryo iyo wax soo saarka kulan, soo saaridda ee isku sawiro pyrotechnic. Haddii bichromate potassium potassium kala diri ee sulfuric acid, waxay siinaysaa xal aad wax ku ool alaab muraayad lagu dhaqo ee shaybaarka. Sida qayb ka mid ah bichromate potassium potassium ah electrolytes loo isticmaalo qalalan iyo sidoo kale habka metallurgy Biraha inhibitor miridhku iyo Alloys ay.

Chrompick potassium - xarunta aad u sun ah. Dhibcood oo xal dhanba, dhacayay meelaha qaawan ee jidhka, baabbi'in maqaarka. Xitaa uruureen yar oo ah walaxda taasi waxay u keeni kartaa dhaawac weyn u mareenka-mareenka iyo dhaawici unugyada jilibka carjawda. kiis la yaqaan oo dhaawac kelyaha, beerka iyo marinka caloosha iyo mindhicirka. Sidaa darteed, wax soo saarka ee shuqullo la dichromate potassium waa in si adag loo fuliyo tallaabooyinka nabadgelyo. Gaar ahaan waa in ay is ogow in ay ilaaliyaan nidaamka neefsashada iyo maqaarka.