| Chemical Properties |
dawb me ntsis adhering crystalline hmoov |
| Chemical Properties |
Ammonium hexafluorosilicate yog dawb crystalline hmoov. Tsis hnov tsw. |
| Lub cev muaj zog |
d 2,01g;3. decomposes ua ntej melting; tsw tsw. |
| Siv |
Ammonium hexafluorosilicate yog siv los ua tshuaj tua kab mob thiab tshuaj ntsuam reagent. Nws pom daim ntawv thov hauv etching iav, hlau casting, thiab electroplating. Nws tseem ua haujlwm ua tus neeg saib xyuas ntoo thiab mothproofing tus neeg sawv cev hauv textiles. Nws plays ib tug pab tau daim ntawv thov nyob rau hauv soldering flux. Nws kuj tseem siv los ntes cov kab mob caries yam tsis muaj xim ntawm demineralized thawj cov hniav enamel. |
| Siv |
Hauv tshuaj tua kab; nyob rau hauv soldering flux; iav etching. |
| Kev piav qhia dav dav |
Ib tug dawb crystalline khoom. Noncombustible. Corrodes aluminium. Siv los ua tshuaj tua kab mob, hauv etching iav, hlau casting, thiab electroplating. |
| Cua & Dej Reactions |
Dej soluble. |
| Reactivity Profile |
Cov ntsev, yooj yim, xws li Ammonium hexafluorosilicate, feem ntau yog soluble hauv dej. Cov kev daws teeb meem muaj qhov nruab nrab ntawm cov hydroxide ions thiab muaj pH ntau dua 7.0. Lawv ua raws li cov hauv paus rau neutralize acids. Cov neutralizations ua kom sov, tab sis tsawg dua los yog tsawg dua yog tsim los ntawm neutralization ntawm lub hauv paus nyob rau hauv reactivity pawg 10 (Bases) thiab neutralization ntawm amines. Lawv feem ntau tsis hnov mob li oxidizing tus neeg saib xyuas lossis txo cov neeg ua haujlwm tab sis tus cwj pwm zoo li no tsis yooj yim sua. |
| Hazard |
Tshuaj lom heev; tuag. |
| Health Hazard |
Kev nqus plua plav tuaj yeem ua rau mob ntsws ntsws thiab tuaj yeem ua rau tuag taus hauv qee kis. Kev noj haus yuav ua rau tuag taus. Kev sib cuag nrog cov plua plav ua rau khaus qhov muag thiab khaus lossis khaus ntawm daim tawv nqaij. |
| Hluav Taws Xob |
Kev phom sij tshwj xeeb ntawm Cov Khoom Siv Hluav Taws Xob: Cov tshuaj lom thiab khaus khaus hydrogen fluoride, silicon tetrafluoride, thiab oxides ntawm nitrogen tuaj yeem tsim hauv hluav taws. |
| Flammability thiab Explosibility |
Tsis cais |
| Ntxim yuav nphav raug |
Cov khoom siv no yog siv los ua tshuaj tua kab thiab tshuaj tua kab, ntoo preservative, soldering flux; lub teeb hlau casting; thiab nyob rau hauv lub etching ntawm iav. |
| Kev xa khoom |
UN2856 Fluorosilicates, nos, Hazard Class: 6.1; Cov ntawv lo: 6.1-Cov ntaub ntawv muaj kuab lom, Kev Siv Lub Npe Yuav Tsum Tau. |
| Txoj Kev Purification |
Crystallize ntsev los ntawm dej (2mL / g). Tom qab 3 recrystallisations, Cov ntsev qib Technical muaj Li, Na, K thiab Fe ntawm 0.3, 0.2, 0.1 thiab 1.0 ppm feem. . |
| Kev tsis sib haum xeeb |
Aqueous tov yog heev corrosive. Kev sib cuag nrog cov kua qaub reacts tsim hydrogen fluoride, uas yog ib qho corrosive heev thiab tsim cov pa roj. Corrosive rau aluminium. Tsis sib haum nrog oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, thiab lwm yam); kev sib cuag tej zaum yuav ua rau hluav taws kub los yog tawg. Khaws kom deb ntawm cov ntaub ntawv alkaline, muaj zog hauv paus, muaj zog acids, oxoacids, epoxides. Ammonium fluorosilicate reacts nrog dej los tsim hydrofluoric acid, ib qhov chaw ntawm fluoride ions. Tsis zoo li lwm cov halide ions, cov tshuaj fluoride ion muaj zog heev, ua lub hauv paus tsis muaj zog thiab koom nrog qee qhov tshwj xeeb tshwm sim. Tshwj xeeb, fluorides hnov mob nrog cov tshuaj uas muaj calcium, magnesium, los yog silicon ions, uas txhais tau hais tias cov tshuaj uas muaj cov tshuaj fluorides yog corrosive rau ob leeg nyob hauv cov ntaub so ntswg thiab iav. Hydrofluoric acid tuaj yeem ua rau mob hnyav heev thiab yog ib qho ntawm ob peb cov ntaub ntawv uas tuaj yeem ua rau iav. Nws tseem yog cov pa roj lom hauv nws daim ntawv tsis muaj dej. |
| Pov tseg pov tseg |
Tham nrog cov koom haum tswj hwm ib puag ncig rau kev taw qhia txog kev coj ua pov tseg. Lub tshuab hluav taws xob ntawm cov khoom pov tseg uas muaj cov kab mob no (Ntau dua lossis sib npaug li 100 kg / mo) yuav tsum ua raws li EPA cov cai tswj hwm kev khaws cia, kev thauj mus los, kev kho, thiab kev pov tseg pov tseg. Incineation. |
