
Hordhac
sodium cyanide (NaCN) waa iskudhis kiimiko ah oo leh codsiyo warshadeed oo muhiim ah, in kasta oo ay tahay dabeecad aad u sun ah. Waa cad, adag oo crystalline ah oo aad ugu milmay biyaha. Maqaalkani waxa uu sahamin doonaa tilmaamaha guud ee sodium cyanide iyo isticmaalkeeda kala duwan ee warshadaha kala duwan.
Tilmaamaha guud
Heerarka daahirnimada
98% Nadiif: Tani waa darajada caadiga ah ee laga heli karo suuqa. Si adag Sodium cyanide, heerkan daahirsanaanta ah, qaybta ugu muhiimsan, Sodium cyanide (NaCN), waa inuu joogaa ugu yaraan 98.0%. Taas waxaa weheliya, cabbirada kale sida maadada NaOH waa inay ahaadaan ≤0.3%, Na₂CO₃ ≤0.2%, qoyaan ≤0.2%, iyo walxaha aan lagu milmi karin biyaha ≤0.01%. Fasalkani wuxuu ku habboon yahay noocyo badan oo codsiyo warshadeed ah halkaas oo heer sare oo nadiif ah loo baahan yahay laakiin aan ahayn saxnaanta ugu sarreysa. Tusaale ahaan, hababka nadiifinta biraha qaarkood, 98% sodium cyanide saafi ah waxay si wax ku ool ah uga saari kartaa oksaydhka dusha sare iyo wasakhowga.
99% Nadiif: Matalaya darajo sare, sodium cyanide adag oo leh 99% nadiif ah ayaa leh shuruudo adag. Nuxurka NaCN waa inuu noqdaa ≥99.0%, oo leh qoyaan ≤0.5%, maadada aan milmi karin biyaha ≤0.01%, cyanide ≤0.01%, chloride ≤0.20%, iyo sulfate ≤0.07%. Darajadan nadiifinta sare ah waxaa badanaa loo adeegsadaa codsiyada halka joogitaanka wasakhdu ay faragelin karto falcelinta kiimikada. Soo saarista xalal tayo sare leh oo tayo sare leh, 99% sodium cyanide saafi ah waxay ka caawisaa in la gaaro lebbiska birta oo tayo sare leh.
Foomamka Jirka
Solid: Sodium cyanide waxaa caadi ahaan lagu heli karaa qaab adag, kaas oo noqon kara qaabka blocks, qaybo crystalline, ama budo. Foomamka adag ayaa loo door bidaa kaydinta fudud iyo gaadiidka masaafo dheer. Qaabka adag uma badna inuu daadanayo inta lagu jiro gaadiidka marka loo eego qaabka dareeraha ah. Inta badan waxa lagu xidhaa laba bacood oo xidhan oo ku dhex jira sanduuq alwaax ah, oo miisaankeedu yahay ilaa 1 tan. Cyanide sodium adag ayaa si weyn loo isticmaalaa warshadaha macdanta dahab soo saarid. Birquettes, kuwaas oo qiyaastii 98% saafi ah una muuqda caddaan, waxay u eg yihiin briquettes dhuxusha waxayna ku habboon yihiin in lagu maareeyo hawlaha macdanta ballaaran.
LiquidSoodhiyam cyanide dareere ah, in kasta oo ay aad uga yar tahay caqabadaha gaadiidka iyo kaydinta awgeed, ayaa sidoo kale la heli karaa. U fiirsashada guud ee dareeraha sodium cyanide ee loo isticmaalo codsiyada qaarkood waa 30%. Foomkan, nuxurka NaCN waa inuu noqdaa ≥30.0%, oo leh NaOH ≤1.0%, Na₂CO₃ ≤1.0%, NaCl ≤0.027%, iyo NaCOOH ≤0.60%, iyo APHA (qiyaasta midabka) qiimaha ≤100 Soodhiyam cyanide dareere ah waxaa loo isticmaalaa hababka warshadaha qaarkood halkaas oo aad u isku mid ah oo sahlan - qaab kiimiko ah oo kala firdhiyey ayaa loo baahan yahay, sida farsamooyinka soo saarista macdanta qaarkood.
Codsiyada Goobta
Warshadaha Macdanta
Soo saarista Dahabka iyo Bir Qaaliga ah: Sodium cyanide waxa si weyn loogu isticmaalaa qodista dahabka iyo biraha kale ee qaaliga ah. Nidaamkan, oo loo yaqaan leaching cyanide ama cyanidation dahab ah, wuxuu ka faa'iidaysanayaa xidhiidhka sare ee dahabka (I) ee ku wajahan cyanide. Marka ay jiraan hawo (oxygen) iyo biyo, birta dahabka ah ayaa oxidizes oo milmaan, samaynta cyanide dahab ah (ama dahab sodium cyanide) iyo sodium hydroxide. Falcelinta kiimikaad waxa loo matalli karaa sida: 4Au + 8NaCN + O₂+ 2H₂O → 4Na[Au(CN)₂]+ 4NaOH. Macdanta heerka hoose ah ayaa lagu farsamayn karaa iyadoo la isticmaalayo habkan, taasoo ka dhigaysa kharash - hab wax ku ool ah oo lagu soo saaro dahabka. Foomka adag ee sodium cyanide, gaar ahaan 98% briquettes saafi ah, ayaa caadi ahaan loo isticmaalaa hawlgallada macdanta ee baaxadda weyn sababtoo ah sahlanaanta maaraynta iyo xoojinta sare ee walxaha firfircoon.
Warshadaha Kiimikada
Synthesis ee NitrilesSodium cyanide waxa ay u adeegtaa sidii walxo bilow ah oo muhiim u ah isku dhafka nitriles. Ion-ka cyanide (CN⁻) ee ku jira sodium cyanide wuxuu u shaqeeyaa sidii nucleophile, oo ku deeqaya lammaane elektaroonig ah si ay u sameeyaan curaarta kiimikada. Nitriles waa qaybo lagama maarmaan u ah kiimikooyinka iyo daawooyinka kala duwan ee kala duwan. Tusaale ahaan, acrylonitrile, oo loo isticmaalo soo saarista fiilooyinka synthetic sida acrylic iyo samaynta caagadaha, ayaa lagu farsamayn karaa iyadoo la isticmaalayo sodium cyanide oo ah dhexdhexaad muhiim ah.
Soo saarista Hydrocyanic Acid iyo Cyanides kale: Waxaa loo isticmaalaa in lagu soo saaro hydrocyanic acid (HCN), taas oo horudhac u ah xeryahooda kiimiko oo badan. Intaa waxaa dheer, sodium cyanide waxaa loo isticmaalaa in lagu soo saaro noocyo kala duwan oo aan dabiici ahayn cyanides sida potassium cyanide (KCN), cyanuric chloride, iyo cyanogen chloride. Kuwaas Cyanides ka hel codsiyada warshadaha kala duwan, laga bilaabo koronto-samaynta ilaa isku-dhafka kiimikada.
Habaynta Biraha
Nadiifinta Birta: Sodium cyanide waxaa loo isticmaalaa nadiifiyaha birta ah. Waxay si wax ku ool ah uga saari kartaa oksaydhyada dusha sare iyo wasakhda birta, hagaajinta tayada dusha birta. Tani waxay muhiim u tahay hababka meesha birta nadiifka ah looga baahan yahay daawaynta xigta sida rinjiyeynta, dahaarka, ama alxanka. Awoodda cyanide sodium si ay ula falgasho oksaydhyada birta oo ay milaan waxay ka dhigaysaa wakiil faa'iido leh ee diyaarinta dusha birta.
Qalabka korantada: In electroplating, sodium cyanide waxaa loo isticmaalaa in la abuuro xal electroplating. Waxay ka caawisaa dhigista lakabka khafiifka ah ee birta ah ee substrate, hagaajinta muuqaalka, iska caabinta daxalka, iyo xidhashada caabbinta shayga. Tusaale ahaan, dahaadhidda qalinka, sodium cyanide waxaa loo isticmaalaa qubeyska daasadda si ay u fududayso dhigista labbiska ee ion qalinka shayga la dhejiyay. Nadiifinta cyanide sodium, gaar ahaan darajada 99%, ayaa muhiim u ah koronto-sameynta si loo xaqiijiyo daahan bir ah oo tayo sare leh oo joogto ah.
Warshadaha dawooyinka
Dhexdhexaadka Isku-darka Dawooyinka: Sodium cyanide waxa loo isticmaali karaa dhex dhexaad ka ah isku dhafka daawooyinka qaarkood. Tusaale ahaan, soo saarista dawooyinka xanuunka dhimaya qaarkood (xanuun-jabiyeyaasha) iyo dawooyinka suuxdinta, sodium cyanide waxay ku lug leedahay fal-celin kiimikaad ah oo ka samaysan dhismooyinka muhiimka ah ee dawooyinkan. Si kastaba ha ahaatee, sunta aadka u daran awgeed, borotokoollada badbaadada adag ayaa la raacayaa inta lagu jiro isticmaalka soo saarista dawada.
Araajida kale
In wax soo saarka ee dheeha: Sodium cyanide waxa loo isticmaalaa samaynta dheeha. Waxay ka qaybqaadataa falcelinta kiimikaad ee gacan ka geysta abuurista koromophore (qaybta molecule ee midabka siisa) ee dheeha. Noocyo kala duwan oo midabyo ah, sida kuwa loo isticmaalo warshadaha dunta, ayaa laga yaabaa inay u baahdaan soodhiyam cyanide habka isku-darkooda.
Jiirka ahaan (inkasta oo uu ka yar yahay): Taariikh ahaan, sodium cyanide waxaa loo isticmaali jiray sida jiirka. Si kastaba ha ahaatee, sababta oo ah sunta xad dhaafka ah ee noolaha aan bartilmaameedka ahayn iyo bini'aadamka, iyo suurtagalnimada wasakhowga deegaanka, isticmaalkeeda sida jiirka ayaa si weyn hoos ugu dhacay.
Tixgalinta Nabdoonaanta
Waxaa muhiim ah in la ogaado in sodium cyanide waa mid aad u sun ah. Waxay noqon kartaa dhimasho haddii la nuugo, la nuugo maqaarka, ama la liqo. Xataa qadar yar, oo ka yar 5 mg/kg miisaanka jidhka qofka 70-kg ah, wuxuu noqon karaa dhimasho. Marka ay la xiriirto hawada qoyan ama biyaha, waxay sii daayaan gaaska daxalka, ololaya, iyo sunta hydrogen cyanide. Sidaa darteed, tallaabooyinka badbaadada adag waa in loo hoggaansamo marka la tacaalayo, la kaydinayo, iyo la qaadayo sodium cyanide. Shaqaalaha ka shaqeeya warshadaha isticmaala sodium cyanide waa in la siiyaa qalab ilaalin shakhsi ah oo ku habboon, iyo habab hawo-mareen oo habboon waa in la diyaariyaa si looga hortago in ay dhismaan gaasaska sunta ah.
Ugu Dambeyn
Sodium cyanide, inkasta oo ay ku badan tahay sunta, waxay door muhiim ah ka ciyaartaa warshado dhowr ah sababtoo ah sifooyinka kiimikada ee gaarka ah. Tilmaamaha guud ee 98% iyo 99% nadiifinta ee foomamka adag iyo dareeraha waxay u hoggaansamaan shuruudaha warshadaha kala duwan. Laga soo bilaabo macdan qodista biraha qaaliga ah ilaa kiimikooyinka synthesize iyo dawooyinka, codsiyadeedu way kala duwan yihiin. Si kastaba ha ahaatee, khataraha la xidhiidha waxay dalbanayaan hirgelinta badbaadada adag iyo tallaabooyinka ilaalinta deegaanka si loo hubiyo wanaagga shaqaalaha iyo deegaanka.
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- 1Sodium Cyanide oo la dhimay (CAS: 143-33-9) ee Macdanta - Tayada Sare & Qiimaynta Tartan
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