Boric acid

piav qhia luv luv:

Nws yog cov hmoov dawb crystalline hmoov, nrog rau kev xav zoo thiab tsis muaj ntxhiab tsw.Nws acidic qhov chaw tsis yog muab protons los ntawm nws tus kheej.Vim tias boron yog ib qho hluav taws xob tsis muaj hluav taws xob, nws tuaj yeem ntxiv hydroxide ions ntawm dej molecules thiab tso tawm protons.Ua kom zoo dua ntawm cov cuab yeej tsis muaj hluav taws xob no, cov khoom siv polyhydroxyl (xws li glycerol thiab glycerol, thiab lwm yam) tau ntxiv rau cov khoom ruaj khov kom ntxiv dag zog rau lawv cov acidity.

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Product Detail

Khoom cim npe

Khoom Paub meej

Specifications muab

Siv lead ua anhydrous(Cov ntsiab lus ≥99%)

Monohydrate siv lead ua(Cov ntsiab lus ≥98%)

(Scope ntawm daim ntawv thov siv 'cov khoom siv')

Oxalic acid yog ib qho tsis muaj zog acid.Thawj qhov kev txiav txim ionization tas li Ka1 = 5.9 × 10-2 thiab qhov thib ob-kev txiav txim ionization tas li Ka2 = 6.4 × 10-5.Nws muaj acid commonness.Nws tuaj yeem cuam tshuam lub hauv paus, discolor qhov taw qhia, thiab tso cov pa roj carbon dioxide los ntawm kev cuam tshuam nrog carbonates.Nws muaj zog txo qis thiab yooj yim rau oxidized rau hauv carbon dioxide thiab dej los ntawm oxidizing tus neeg sawv cev.Cov kua qaub potassium permanganate (KMnO4) tuaj yeem hloov xim thiab txo mus rau 2-valence manganese ion.

EVERBRIGHT® ' kuj tseem yuav muab customized ： cov ntsiab lus / whiteness / particlesize / PHvalue / xim / ntim style / ntim specifications thiab lwm yam khoom tshwj xeeb uas tsim nyog rau koj cov kev siv, thiab muab cov qauv dawb.

Khoom Parameter

CAS Rn

10043-35-3

EINECS Rn

233-139-2 : kuv

FORMULA wt

61.833 ib

Khoom siv

iav / fiberglass

Siv rau zus tau tej cov iav kho qhov muag, kua qaub-resistant iav, organoborate iav thiab lwm yam siab heev iav thiab iav fiber ntau, tuaj yeem txhim kho qhov kub thiab txias ntawm iav, txhim kho cov neeg kho tshuab lub zog, txo lub sij hawm melting.B2O3 plays ob lub luag haujlwm ntawm flux thiab network tsim hauv kev tsim cov iav thiab iav fiber ntau.Piv txwv li, nyob rau hauv iav fiber ntau lawm, lub melting kub yuav txo tau kom yooj yim kos duab.Feem ntau, B2O3 tuaj yeem txo cov viscosity, tswj thermal expansion, tiv thaiv permeability, txhim kho tshuaj lom neeg ruaj khov, thiab txhim kho kev tiv thaiv kev poob siab thiab thermal shock.Hauv iav ntau lawm qhov twg cov ntsiab lus sodium tsawg yuav tsum tau, boric acid feem ntau tov nrog sodium borates (xws li borax pentahydrate los yog borax anhydrous) los tswj cov sodium-boron ratio hauv iav.Qhov no yog ib qho tseem ceeb rau borosilicate iav vim boron oxide qhia zoo solubility nyob rau hauv cov ntaub ntawv ntawm tsawg sodium thiab siab txhuas.

Enamel / ceramic

Enamel, ceramic kev lag luam rau zus tau tej cov glaze, tuaj yeem txo qhov thermal expansion ntawm glaze, txo qhov kub ntawm glaze, thiaj li tiv thaiv kev tawg thiab deglazing, txhim kho cov luster thiab ceev ntawm cov khoom.Rau ceramic thiab enamel glazes, boron oxide yog ib tug zoo flux thiab network tsim lub cev.Nws tuaj yeem tsim iav (ntawm qhov kub qis), txhim kho qhov hloov pauv ntawm qhov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoobLub siab boron frit ripens sai sai thiab tsim ib tug du glaze sai, uas yog conducive rau coloring.Nyob rau hauv lub ceev-hluav taws kub glazed pobzeb frit, B2O3 yog qhia raws li boric acid los xyuas kom meej cov ntsiab lus sodium tsawg.

Kev kho mob kev lag luam

Siv nyob rau hauv zus tau tej cov boric acid ointment, tshuaj tua kab mob, astringent, preservative thiab hais txog.

Nplaim retardant

Ntxiv borate rau cov khoom siv celluloid tuaj yeem hloov nws cov tshuaj tiv thaiv oxidation thiab txhawb kev tsim ntawm "carbonization".Yog li ntawd nws yog nplaim retardant.Boric acid, ib leeg lossis ua ke nrog borax, muaj qhov tshwj xeeb ntawm kev txo qis ntawm cov celluloid rwb thaiv tsev, ntoo, thiab paj rwb log tsheb hauv txaj.

metallurgy

Nws yog siv los ua additive thiab cosolvent nyob rau hauv zus tau tej cov boron steel los ua cov boron steel muaj siab hardness thiab zoo dov ductility.Boric acid tuaj yeem tiv thaiv qhov chaw oxidation ntawm hlau vuam, brazing thiab casing vuam.Nws tseem yog cov khoom siv raw ntawm ferroboron alloy.

Kev lag luam tshuaj

Siv rau hauv kev tsim ntau yam borates, xws li sodium borohydride, ammonium hydrogen borate, cadmium borotungstate, potassium borohydride thiab lwm yam.Hauv kev tsim cov nylon intermediates, boric acid plays lub luag haujlwm catalytic hauv oxidation ntawm hydrocarbons thiab tsim cov esters los ua kom cov qoob loo ntawm ethanol, yog li tiv thaiv cov oxidation ntxiv ntawm hydroxyl pawg los tsim ketones lossis hydroxic acids.Fertilizer kev lag luam rau zus tau tej cov tswm ciab wicks, boron muaj chiv.Nws yog siv los ua ib qho tshuaj analytical reagent rau kev npaj tsis thiab ntau yam xov xwm rau haploid yug me nyuam.