I-potassium dichromate - iipropicchemical properties kunye nesicelo

I-potassium dichromate yikristal engakhange ilandele imbala ebomvu (ngamanye amaxesha obomvu), echithwa kakuhle kwimimandla yamanzi kwaye ifane neenaliti ezincinci okanye iiplati ezibunjwa. Xa usebenzisana nesisisombululo, isisombululo esinomsoco sinokuphendula.

I-potassium dichromate yinto enetyhefu, i- carcinogic substance kunye ne-oxidant enamandla kakhulu. Izisombululo zingaphazamisa ulusu, i-cartilage tissue, kunye ne-inhalation of vapors - iphepheni yokuphefumula.

Kwiqondo lokushisa malunga ne-1300 ° C, ngenxa yempendulo yokutshintshaniswa kwe-sodium dichromate kunye ne- potassium chloride, i- dicromate ye potassium ifumaneka, ifom ye-K ₂ Cr ₂ O ₇ :

2KCl + Na _{2 2} Kr ₂ O ₇ → K ₂ Kr ₂ O ₇ + 2NaCl.

Le nkunkuma isetyenziswa kumashishini. I-dichromate ye potassium yobugcisa isetyenziselwa ukuveliswa kwemidlalo, iibhetri ezomileyo, iingubo ezingafaniyo, iingubo zokupenda, kunye ne-organic synthesis - ukufumana iintlobo ezahlukeneyo zamakhemikhali.

Isisombululo esibomvu-yellow yellow potassium dichloride ibala lephepha elibomvu embala obomvu obomvu. Ngokupheka ngakumbi, isisombululo seekhemikhali sifumana umbala obomvu obomvu. Xa ubushushu bufika ku-398 ^° C, i-dichromate ye potassium iqala ukuyibilika kwaye iphenduke ibe ngumbane omnyama obomvu, owathi emva kokupholisa ukupholisa kuqinisa kwaye kudibanisa. Ngaphezulu kwe-500 ^° C, loo nto iyanqumla ngokupheleleyo i-oxygen, i- chromium oxide kunye ne- potassium chromate.

Izakhiwo ze-Physicochemical ze- potassium dichromate

Imithetho yokugcina nokuhamba kwezinto zephemikhali yenkalo yengozi eyongeziweyo

I-dichromate ye potassium yobuchwepheshe ingathunyelwa naliphi na uhlobo lwezothutho, ngaphandle koomoya. I-chemical substance, epakishwe kwizikhonkwane ezikhethekileyo ezenzelwe ukusetyenziswa kwexesha elilodwa, inokuthuthwa ngumzila ovulekileyo. I-dichromate ye-potassium yobugcisa kufuneka igcinwe kwiindawo zokugcina iimpahla, ngelixa umveliso kwizixhobo ezikhethekileyo zokusetyenziswa omnye unokugcinwa kwiindawo ezivulekileyo ezixutywe ngokukhawuleza ukuhamba kwamanzi.

Ukupakishwa kweekhemikhali eklasini yokuqala yengozi

I-dichromate ye potassium yobugcisa ixutywe kwiingqungquthela zetsimbi ezenziwe ngokukodwa, kunye neengxowa ze-polyethylene ezinemiqolo emihlanu, ezilinganiselwa kuma-50 kg. Ivumelekile ukupakisha kwizikhonkwane ezithambileyo ngenjongo ekhethekileyo yokusetyenziswa kwexesha elilodwa.

Iklasi eliyingozi yekhemikhali

I-potassium ye-dichromate yobuchwepheshe ixhaphaza kwaye inobungozi bomlilo. Ngesilinganiso sempembelelo emzimbeni womntu, wanikwa iklasi yokuqala yengozi. Xa usebenza neekhemikhali, kubalulekile ukugcina izicwangciso zokuphepha, ukuba uqaphele kwaye uqaphele, kwaye izixhobo zokukhusela ulusu kunye nezitho zokuphefumula kufuneka zisetyenziswe.