
Sodium Cyanide (NaCN) ndi gulu lodziwika bwino chifukwa cha kawopsedwe kwambiri ndipo limagwiritsidwa ntchito pafupipafupi m'mafakitale monga migodi, electroplating, ndi kaphatikizidwe ka mankhwala. Chifukwa cha kuopsa kwake, kumvetsetsa khalidwe lake, makamaka kuthekera kwa kugwedezeka kwachindunji mumlengalenga, ndizofunikira kwambiri pachitetezo ndi kuteteza chilengedwe.
Ma Chemical Properties a Sodium Cyanide
Sodium cyanide ndi yoyera, yolimba mwa kristalo yokhala ndi malo osungunuka kwambiri a 563.7 °C ndi malo otentha a 1496 °C. M'malo ozungulira, omwe amadziwika ndi kutentha kwapakati pa 20 - 25 ° C komanso kuthamanga kwa mumlengalenga, amakhala pamalo olimba. Kuchokera pamawonedwe oyambira a thermodynamic, zinthu nthawi zambiri zimafunikira mphamvu zamagetsi kuti zisinthe kuchoka paolimba kapena madzimadzi kupita ku mpweya wa mpweya (kusinthasintha). Popeza kutentha yozungulira ndi kutali m'munsimu kuwira mfundo sodium cyanide, sasintha mosavuta kukhala gasi modzidzimutsa ngati zinthu zili bwino.
Zomwe Zimakhudza Kusinthasintha
Komabe, kukhazikika kwa Sodium Cyanide zingakhudzidwe ndi zinthu zosiyanasiyana. Chinthu chimodzi chofunika kwambiri ndi momwe zimachitira ndi madzi ndi zidulo. Liti Sodium cyanide ikakumana ndi madzi, imapangidwa ndi hydrolyzes hydrogen cyanide (HCN), mpweya wotentha kwambiri komanso wapoizoni kwambiri. Chemical reaction ikhoza kuyimiridwa motere:

Kufanana kwa izi kumakhudzidwa ndi pH ya yankho. M'malo acidic, zomwe zimachitika zimatha kupita patsogolo, kulimbikitsa mapangidwe a HCN. Mwachitsanzo, ngati sodium cyanide ikukumana ndi mvula ya acidic kapena madzi owonongeka a mafakitale, mbadwo wofulumira wa mpweya wa HCN ukhoza kuchitika, womwe umatuluka mumlengalenga.
Chinthu china ndi kukwera kwa kutentha. Ngakhale kutentha kozungulira sikukwanira kupangitsa kuti sodium cyanide iwonongeke mwachindunji, mu ngozi za mafakitale kapena malo osayenera osungira kumene kutentha kwapafupi kumakwera kwambiri, mphamvu ya kinetic ya mamolekyu a sodium cyanide imawonjezeka. Izi zitha kupangitsa kuti hydrolysis ichuluke komanso, chifukwa chake, kuthekera kwakukulu kwa mapangidwe a HCN ndi kusinthika.
Zokhudza Chitetezo ndi Zachilengedwe
Kuthekera kwa kupanga ndi kuphulika kwa HCN kuchokera ku sodium cyanide kumakhala ndi chitetezo chachikulu komanso zotsatira za chilengedwe. Kuntchito, ngati sodium cyanide sinasungidwe bwino kapena kusamalidwa bwino, kukhudzidwa mwangozi ndi chinyezi kapena ma acid kumatha kutulutsa mpweya wa HCN, zomwe zingawononge thanzi la ogwira ntchito. Zizindikiro za kukhudzidwa kwa HCN zimatha kuyambira pakupumira pang'ono komanso chizungulire mpaka moyo - zowopsa monga kumangidwa kwa mtima ndi chikomokere.
M'chilengedwe, kutulutsidwa kwa HCN kuchokera ku sodium cyanide kumatha kuipitsa mpweya, nthaka, ndi madzi. Ikhoza kuvulaza zamoyo zosiyanasiyana, kusokoneza zachilengedwe, ndi kuwunjikana m’zakudya, zomwe zikuwonjezera kuwonongeka kwa chilengedwe.
Kupewa ndi Kuchepetsa
Kuti mupewe kusokonekera - kuopsa kokhudzana ndi sodium cyanide, ndondomeko zotetezedwa ziyenera kutsatiridwa. Sodium cyanide iyenera kusungidwa pamalo owuma, ozizira, ndi mpweya wabwino, kutali ndi komwe kumachokera chinyezi ndi zidulo. M'mafakitale, njira zoyendetsera bwino, kuphatikiza kugwiritsa ntchito zida zoyenera zodzitetezera (PPE) ndikuyika makina ozindikira mpweya, ndizofunikira. Ngati kutaya kapena kutulutsidwa mwangozi, njira zodzitetezera mwamsanga ziyenera kuchitidwa, ndipo kusalowerera ndale ndi njira zoyenera za alkaline kungakhale kofunikira kuti tipewe kupanga HCN.
Pomaliza, pamene sodium cyanide si mwachindunji volatilize mu mpweya pansi yachibadwa yozungulira mikhalidwe, akhoza mwachindunji kutulutsa kosakhazikika ndi poizoni HCN mpweya kudzera hydrolysis zimachitikira pa zochitika zina monga kukhudzana ndi madzi kapena zidulo, kapena kutentha okwera. Kumvetsetsa njirazi ndikofunikira pakuwonetsetsa kusungidwa bwino, kusungidwa, ndi kugwiritsa ntchito sodium cyanide, komanso kuteteza thanzi la anthu ndi chilengedwe.
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