Cov cuab yeej thiab kev siv ntawm Sodium Cyanide, tshuaj lom neeg lom neeg heev

sodium cyanide (NaCN) yog ib qho tshuaj lom neeg tsis muaj tshuaj lom neeg muaj npe nrov rau nws qhov ua rau tuag taus thiab sib txawv. Tshuaj lom neeg. Kab lus no delves rau hauv lub cev thiab tshuaj yam ntxwv ntawm Sodium cyanide thiab tshawb nrhiav nws ntau yam kev siv, thaum tseem qhia txog qhov tseem ceeb ntawm kev nyab xeeb thiab kev tswj hwm kev tswj hwm.

Lub cev lub cev thiab tshuaj

Sodium cyanide yog dawb, crystalline khoom uas zoo li lub rooj ntsev hauv qhov tsos. Nws yog heev soluble nyob rau hauv dej, yooj yim tsim ib tug ntshiab, tsis muaj xim tov. Qhov kev solubility no ua rau nws muaj kev sib kis sai sai hauv qhov chaw aqueous, uas txhim kho nws cov peev xwm toxicity. Nrog lub melting point ntawm 563.7 ° C thiab lub boiling point ntawm 1496 ° C, Sodium Cyanide pom zoo thermal stability nyob rau hauv ib txwm tej yam kev mob.

Kuaj, sodium cyanide yog heev reactive. Nws dissociates hauv dej kom tso tawm cyanide ions (CN-), uas yog lub luag hauj lwm rau nws toxicity. Thaum sib cuag nrog cov kua qaub, sodium cyanide reacts heev los tsim hydrogen cyanide (HCN), ib tug heev volatile thiab tsis tshua muaj tshuaj lom roj. Cov tshuaj tiv thaiv no ua rau muaj kev pheej hmoo tseem ceeb, vim tias cov kua qaub ntau dhau tuaj yeem ua rau muaj kev tso tawm ntawm hydrogen cyanide tuag taus. Tsis tas li ntawd, sodium cyanide tuaj yeem hnov ​​​​mob nrog ntau yam hlau los tsim cov hlau cyanide complexes ruaj khov, cov cuab yeej siv tau siv ntau yam kev lag luam.

muaj daim ntaub ntawv

Txawm hais tias nws cov tshuaj lom heev, sodium cyanide plays lub luag haujlwm tseem ceeb hauv ntau yam kev lag luam. Ib qho ntawm cov kev siv tseem ceeb tshaj plaws ntawm sodium cyanide yog nyob rau hauv kev lag luam mining, tshwj xeeb hauv kev rho nyiaj kub thiab nyiaj. Cov txheej txheem, hu ua cyanidation, cuam tshuam cov hlau muaj nuj nqis los ntawm lawv cov ores siv cov tshuaj dilute ntawm sodium cyanide. Cov cyanide ions tsim cov txheej txheem soluble nrog kub thiab nyiaj, ua rau lawv sib cais los ntawm ore matrix. Txoj kev no yog qhov ua tau zoo thiab siv dav vim nws muaj peev xwm rho tawm cov hlau los ntawm qib qis ore, ua rau nws muaj txiaj ntsig zoo rau kev lag luam mining loj.

Sodium cyanide kuj pom daim ntawv thov hauv kev lag luam electroplating. Nws yog siv los ua tus neeg sawv cev ua kom ruaj khov rau cov hlau ions hauv electroplating da dej. Los ntawm kev tsim cov complexes ruaj khov nrog cov hlau ions, sodium cyanide ua kom lub cev tsis sib xws thiab cov hlau tso rau ntawm lub substrate, uas ua rau cov khoom zoo electroplated. Daim ntawv thov no yog qhov tseem ceeb tshwj xeeb hauv kev tsim cov hniav nyiaj hniav kub, cov khoom siv tsheb, thiab cov khoom siv hluav taws xob, qhov twg yuav tsum muaj cov hlau du thiab ruaj khov.

Hauv kev lag luam tshuaj, sodium cyanide ua haujlwm tseem ceeb raw khoom rau kev sib txuas ntawm ntau yam organic thiab inorganic tebchaw. Nws yog siv rau hauv kev tsim tshuaj, tshuaj tua kab, dyes, thiab lwm yam tshuaj. Piv txwv li, sodium cyanide yog siv nyob rau hauv lub synthesis ntawm cyanohydrins, uas yog ib qho tseem ceeb intermediates nyob rau hauv zus tau tej cov tshuaj thiab agrochemicals. Txawm li cas los xij, vim nws muaj toxicity, cov txheej txheem kev nyab xeeb nruj thiab cov txheej txheem tuav yuav tsum tau ua raws li thaum siv sodium cyanide hauv tshuaj synthesis.

Kev nyab xeeb thiab kev tswj xyuas

Muab nws cov tshuaj lom neeg heev, sodium cyanide raug tswj hwm nruj hauv ntau lub tebchaws. Kev tuav, khaws cia, thiab kev thauj mus los ntawm sodium cyanide yog nruj tswj hwm kom tsis txhob muaj kev sib tsoo thiab kev sib kis ntawm ib puag ncig. Cov neeg ua haujlwm tuav cov tshuaj sodium cyanide yuav tsum tau txais kev cob qhia tshwj xeeb thiab hnav cov khoom tiv thaiv tus kheej tsim nyog (PPE), suav nrog hnab looj tes, tsom iav, thiab lub tshuab ua pa. Thaum muaj kev nchuav los yog tso tawm, kev ntsuas tam sim thiab tsim nyog yuav tsum tau ua kom txo qis kev pheej hmoo ntawm kev raug mob thiab ib puag ncig kev puas tsuaj.

Hauv kev xaus, sodium cyanide yog ib qho tshuaj lom heev tab sis muaj kev lag luam tseem ceeb nrog lub cev thiab tshuaj lom neeg tshwj xeeb. Nws cov ntawv thov hauv mining, electroplating, thiab tshuaj synthesis qhia nws qhov tseem ceeb hauv ntau qhov kev lag luam. Txawm li cas los xij, qhov muaj kuab lom heev ntawm sodium cyanide yuav tsum muaj kev nyab xeeb nruj thiab kev tswj hwm kev tswj hwm kom muaj kev tiv thaiv tib neeg kev noj qab haus huv thiab ib puag ncig. Raws li kev lag luam txuas ntxiv tso siab rau sodium cyanide, kev tshawb fawb thiab kev txhim kho txuas ntxiv yog tsom rau kev nrhiav kev nyab xeeb dua thiab txhim kho cov txheej txheem kev nyab xeeb kom txo tau cov kev pheej hmoo cuam tshuam nrog kev siv.