Mahungu ya Vumaki
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xana bisphenol a bpa yi tirhisiwa yini?
Bisphenol a bpa yitirhisiwa ngopfu eka vuhumelerisi bya switirhisiwa swohambana hambana swa polymer, kufana na ti epoxy resins, polycarbonates, polysulfones, phenolic unsaturated resins, polyphenylene ether resins, ti polyaryl compounds, polyetherimides, tetrabromobisphenol A, PVC heat stabilizers, ti antioxidants ta rhaba, agricu...Hlaya swo tala -
Xana ku vila ka bisphenol a i yini?
Bisphenol A (BPA), leyi tlhelaka yi tiviwa tani hi diphenylolpropane kumbe (4-hydroxyphenyl)propane, yi endla ti prismatic crystals eka dilute ethanol na ti crystals to fana na needle ematini. Yi pfurha naswona yina nun’hwelo wo olova wa phenolic. Nhlayo ya yona yo n’oka i 157.2°C, nhlayo ya ku pfurha ka yona i 79.4°C, naswona nhlayo ya ku vila ya bisphenol a i 2...Hlaya swo tala -
Xana Bisphenol A i yini?
Bisphenol A (bpa) Vuxokoxoko bya Masungulo Bisphenol A, leyi tlhelaka yi tiviwa tani hi BPA, i nkatsakanyo wa organic lowu nga na fomula ya molecular C15H13O2. Eka ti indasitiri, yitirhisiwa eka vuhumelerisi bya switirhisiwa swofana na polycarbonate (PC) na epoxy resins. Kusukela hiva 1960s, BPA yitirhisiwile eka vumaki bya ti plast...Hlaya swo tala -
Xana u nga tirhisa njhani xitirhisiwa xo susa mihlovo ya sodium hydrosulfite?
Ndlela yo Hluvula Swivati swa Ndhawu ya Swiambalo swo Basa Ndlela yo N’okisa Khapu ya Sodium hydrosulfite Loko kuri na swivati swa ndhawu, tirhisa khapu leyi graduated ku tsakamisa. Chela nhlayo yokarhi ya mati yo hisa (ehenhla ka 90°C) eka khapu. Engeta sodium hydrosulfite (concentration approx. 2.5%) kutani u hlanganisa leswaku yita n’oka. Immer...Hlaya swo tala -
Hi swihi swivumbeko swa vukona bya sodium dithionite?
Swihlawulekisi swa Miri: Sodium dithionite yi hlayiwa tani hi nchumu wa Grade 1 lowu pfurhaka. Yitlhela yitiveka tani hi Rongalite Hiku xavisa, yikona hi swivumbeko swimbirhi: Na2S2O4·2H2O na Na2S2O4 leyinga na mati. Leyo sungula i crystal yo basa leyinene, kasi ya vumbirhi i powder yo tshwuka yo dzwihala. Ku tsindziyela ka yona loku ringanaka i...Hlaya swo tala -
Xiaki lexi hungutaka: Sodium Hydrosulfite
Xitirhisiwa xo hunguta: Sodium Hydrosulfite Vito ra tikhemikhali: Sodium dithionite. Loko ku pimanisiwa ni swilo leswi endlaka leswaku ku va ni oxidizing, sodium hydrosulfite yi onha ngopfu malapi. Yinga tirhisiwa eka swiambalo leswi endliweke hi ti fibre to hambana hambana handle ko vanga khombo, hikokwalaho ka vito ra “hydrosulfite” (leswi vulaka vuhlayiseki bya yona). Xona...Hlaya swo tala -
Hi wihi ntirho wa sodium hydrosulfite eka ti fibre ta swiambalo?
Tifibre Leti Faneleke Sodium hydrosulfite sodium hydrosulfite yi lulamerile eka tifibre to hambana hambana ta malapi, hikokwalaho ka vito ra yona “Rongalite.” Loko switirhisiwa ku basisa hi mahiselo yale henhla kumbe ku susa swivati, ti fibre ta lapi tifanele ku kota ku tiyisela mahiselo yale henhla handle ko onhaka. Hi mayelana na certif...Hlaya swo tala -
Hi wahi makhombo ya sodium hydrosulfite?
Sodium hydrosulfite yina chefu naswona yinga hlundzukisa mahlo na mucosa ya xirho xo hefemula. Yi tirhisiwa ngopfu eka bindzu ra malapi ku hunguta dayi, ku basisa hi ndlela yo hunguta, ku kandziyisa, ku susa muvala ni ku basisa silika, voya, nayiloni ni malapi man’wana. Leswi yi nga riki na tinsimbi to tika, malapi lama bleached wit...Hlaya swo tala -
Xana ku ta humelela yini loko sodium hydrosulfite yi hlangana emoyeni?
Loko yi ri emoyeni, sodium hydrosulfite yi tswonga okisijini hi ku olova naswona yi oxidize. Yitlhela yi tswonga ndzhongho, yi humesa kuhisa naswona swiyisa eka ku onhaka. Yi nga hlengeletana loko yi ri karhi yi tswonga okisijini ya le xibakabakeni naswona yi humesa nun’hwelo wo biha wa acid. Na2S2O4 + 2H2O + O2 → 2NaHSO4 + 2[H] Ku hisa kumbe ku hlangana na swona...Hlaya swo tala -
Hi swihi swivumbeko swa xiviri swa sodium hydrosulfite?
Sodium hydrosulfite Swihlawulekisi swa Miri Sodium hydrosulfite yi hlayiwa tani hi nchumu lowu pfurhaka lowu nga na vuxiyaxiya eka ndzhongho wa Grade 1, lowu tlhelaka wu tiviwa tani hi sodium dithionite. Yi xavisiwa hi swivumbeko swimbirhi: hydrated (Na2S2O4·2H2O) na anhydrous (Na2S2O4). Xivumbeko xa hydrated xi humelela tani hi fine white cryst...Hlaya swo tala -
Hi swihi swipfuno swa ku tirhisa sodium hydrosulfite tani hi xitirhisiwa xo hunguta?
Reducing Agent (Rongalite) Vito ra ti khemikhali: Sodium hydrosulfite Loko ku pimanyisiwa na ti oxidizing agents, Rongalite yivanga ku onhaka kutsongo swinene eka malapi. Yinga tirhisiwa eka swiambalo leswi endliweke hi ti fibre to hambana hambana handle ko vanga khombo, hikokwalaho ka vito ra “Rongalite” (leswivulaka “safe powder” hi Xichayina)...Hlaya swo tala -
Xana mabindzu ma fanele ma yi lawula njhani sodium hydrosulfite?
Ku lava leswaku mabindzu ya tirhisa sisiteme ya vatirhi vambirhi, ya vulawuri bya vanhu vambirhi ya sodium hydrosulfite. Xo sungula, ndhawu yo hlayisela swilo yi fanele ku va na vatirhi va vufambisi lava hlawuriweke naswona yi tirhisa sisiteme ya vatirhi vambirhi, ya swilotlelo swimbirhi. Xa vumbirhi, muofisiri wa ku xava u fanele ku tiyisisa nhlayo, khwalithi, na sa...Hlaya swo tala