Potassium dichromate - physicochemical zvivako uye munda chikumbiro

Potassium dichromate iri iya vasiri caking Orange crystals (dzimwe nguva yakatsvukuruka) zviri nyore soluble mune aqueous svikiro uye akaumbwa akafanana usingaoneki tsono kana kwamahwendefa. Kana kuwadzana nefuma aqueous mhinduro anova acidic.

Potassium dichromate - zvikuru chepfu, carcinogen uye simba oxidants. Pfapfaidzo mhinduro anogona kuparadza ganda, shwashwa, uye inhalation pamusoro vapor - Airways.

Pamusangano tembiricha anenge 1300 ° C somugumisiro exchange maitiro yavaibvisa dichromate uye potassium chloride rinogadzirirwa potassium dichromate, ane nzira K ₂ Kr ₂ O _7:

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

fuma iyi rinoshandiswa indasitiri. Technical potassium bichromate rinoshandiswa kuti pagadzirwe machisi akaoma mabhatiri, inorganic pigments, pendi coatings uyewo makemikari kwetunhu - kugamuchira nekuve makemikari.

Red-yellow mhinduro kuti potassium dichromate aizonyatsovachenesa litmus hapana yakatsvuka. Pamusoro mamwe reflux makemikari mhinduro anova anozivikanwa rima-yakatsvuka. Apo tembiricha yakasvika 398 ^Haiwa C potassium dichromate Unonyunguduka uye anochinja kuva mvura ine shava ruvara, iro riri unozotevera kutonhora solidifies uye crystallizes. Above 500 ^O C nefuma iri yaora kuti okisijeni inotungamirwa, zvachose chromium oxide uye potassium chromate.

Physicochemical ehupfumi kuti potassium dichromate

Storage uye zvokufambisa kwemakemikari zvinhu mukuru Muvuti mukirasi

Technical potassium dichromate anogona yaitakurwa chero denga chokufambisa, kunze mhepo. Chemical, dzaizara chaihwo midziyo dzaizopiwa mumwe-nguva kushandiswa, unogona kupfuura pachena njanji tikaisa unganidza. Technical potassium dichromate inofanira kuchengetwa rakaoma okuchengetera zvivako, ukuwo chigadzirwa iri kushandiswa midziyo chete rwendo inogona kuchengetwa pachena mhepo, akashongedzerwa ane zvakaoma unhani mvura eko.

Kavha pamusoro Chemicals kuti muri mukirasi Muvuti yokutanga

Technical potassium dichromate iri mumapepa mu yakarongerwa simbi ngoma uyewo mapepa akasungirwa, zvinosanganisira mashanu akaitwa nhurikidzwa, rairema makirogiramu 50. Achirega vakatutirana muimba zvinyoronyoro mumidziyo, chinangwa chinokosha kushandiswa chete.

Fixed boka ngozi makemikari

Technical potassium dichromate kuputika uye moto njodzi. The mwero simba pamusoro mumuviri womunhu wokutanga njodzi kirasi basa. Kana tichishanda makemikari anofanira kuchengetwa kuchengeteka, chenjererai kwazvo uye ngaiteerere uye ringashandiswa PPE ganda uye kufema zvomukati.