Amakuru
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Bisphenol A BPA neefunzibwa eta?
Okureeba omu bwijwire Bisphenol A BPA Omukubanza ekakorwa omu mwaka gwa 1936 nk’ekirungo ky’okuteerana, hati bisphenol A (BPA) neekorwa omu bwingi bw’ebintu ebirikurenga obuhumbi 6 buri mwaka. Bisphenol A BPA neekira kukozesebwa nk’ekyombeko ky’okwombeka ebiveera bya polycarbonate, ebirikushangwa omu bintu nk’eby’okurya by’abaana b...Shoma ebirikukiraho -
Ni mirimo ki eri ahansi y‘omubazi gwa bisphenol A?
polikabooni n’ebirungo bya epokisi. Kandi neekoresibwa omu kukora obuveera obukuru obw’eby’obuhangwa nka polysulfone, hamwe na tetrabromobisphenol A, erikukoresibwa munonga nk’ekintu ekirikuzibira omuriro. Polycarbonate (ekirikukirayo kukoresa bisphenol A) n’ekintu ekitaine nshonga, tikiine kunuuka, tikiine butandu, kandi nikihindura...Shoma ebirikukiraho -
bisphenol a bpa neekoresibwa ki?
Bisphenol a bpa neekoresibwa munonga omu kuhanga ebintu bitari bimwe na bimwe ebirikukora nk’ebintu ebitari bimwe na bimwe, nk’ebirungo bya epoxy, polycarbonates, polysulfones, ebirungo ebitarimu ebiriisa, ebirungo bya polyphenylene ether, ebirungo bya polyaryl, ebirungo bya polyetherimides, tetrabromobisphenol A, ebirungo bya PVC ebirikuzibira obutagatsi.Shoma ebirikukiraho -
Niki ekirikumanyisa okufuka kwa bisphenol a?
Bisphenol A (BPA), kandi emanyirwe nka diphenylolpropane nari (4-hydroxyphenyl)propane, neekora ebicweka by’omubiri ebiri nk’empiso omu maizi. Nikibaasa kukwatwa omuriro kandi kiine ekinuuko kya phenolic ekikye. Enshonga yaayo ey’okusheenya ni 157.2°C, enshonda y’okusheenya ni 79.4°C, kandi enshonda y’okufuka kwa bisphenol a ni 2...Shoma ebirikukiraho -
Bisfenoli A n’enki?
Bisphenol A (bpa) Amakuru g’omutaano Bisphenol A, kandi emanyirwe nka BPA, n’ekirungo ky’ebihangwa ekiine enkora ya molekyu C15H16O2. Omu makorero, nikikoresibwa omu kukora ebintu nka polycarbonate (PC) na epoxy resins. Kuruga omu myaka ya 1960, BPA ekaba neekoresibwa omu kukora obuveera...Shoma ebirikukiraho -
Noobaasa kukora ota ekikwato ky’okuihaho erangi ya sodium hydrosulfite?
Omuringo gw‘okusharaho amabara g‘omu mwanya aha bijwaro byeru Omuringo gw‘okuteeka omu kikopo kya Sodium hydrosulfite Ku haraabe hariho amabara g‘omu mwanya, kozesa ekikopo ekiine ebicweka by‘okuteeka. Shuka amaizi garikwotsya (ahaiguru ya 90°C) omu kikopo. Yongyeramu sodium hydrosulfite (omubaro gw‘ebintu ebirikwingana 2.5%) kandi oshukyemu kubaasa kusheesheka. Okwibika...Shoma ebirikukiraho -
Ni miringo ki ey’okubaho kwa sodium dithionite?
Ebintu by’omubiri: Sodium dithionite neeshoroorwa nk’ekintu ekirikubaasa kukwatwa omuriro eky’omutindo gwa 1. Kandi neemanyirwa nka Rongalite Omu by’obushuubuzi, eriho omu miringo ebiri: Na2S2O4·2H2O hamwe na Na2S2O4 etaine maizi. Eky’okubanza n’ekintu kirungi ekirikwera, kandi eky’aha muheru n’esaano y’erangi ya kyenju erikutukura. Oburemeezi bwayo ni...Shoma ebirikukiraho -
Ekirikukyendeeza: Sodium Hydrosulfite
Ekirikukyendeeza: Sodium Hydrosulfite Eiziina ry’omubazi: Sodium dithionite. Waagyeragyeranisa n’ebintu ebirikureetaho okusheeshasheesha, sodium hydrosulfite neereetaho okushiisha kukye munonga aha myenda. Nikibaasa kukoresibwa aha myenda ekozirwe omu nshaho zitari zimwe na zimwe kitaine kabi koona, nikyo kyareeteire eiziina “hydrosulfite” (ekirikumanyisa oburinzi bwayo). Ki...Shoma ebirikukiraho -
Ni murimo ki ogu sodium hydrosulfite erikukora omu nshaho z’ebijwaro?
Ebirungo ebihikire eby’okukoresa omu nshaho z’amaizi g’omubiri Sodium hydrosulfite nibikora gye omu nshaho z’ebijwaro zitari zimwe na zimwe, nikyo kyareeteire eiziina “Rongalite.” Ku birikukoresibwa omu kukyebera nari kwihaho amabara, ebihimba by’ebijwaro biine kuba nibibaasa kugumira ebiriisa bingi bitaine kabi koona. Omuby'okuhamya...Shoma ebirikukiraho -
Ni kabi ki akari omu kunywa sodium hydrosulfite?
Sodium hydrosulfite n‘obutwa kandi neebaasa kushaasha amaisho n‘ebihaha by‘omubiri ebirikuhuuta. Nikikoresibwa munonga omu by’emyenda omu kukyendeeza erangi, okuboneza, okuteera ebitabo, okukyendeeza erangi, n’okuhindura erangi y’ebijwaro bya silk, ebyoya by’entaama, nayiloni n’ebindi. Ahabw'okugira ngu tihariho byoma ebiremeire, emyenda erimu erangi erikutukura...Shoma ebirikukiraho -
Niki ekiraabaho sodium hydrosulfite yaaba eri omu mwanya?
Sodium hydrosulfite ku eri omu mwanya, neekwata oxygen juba kandi ehinduka oksijeni. Kandi neenywa obutagatsi, ereetaho obutagatsi kandi ereetaho okusiisikara. Nikibaasa kweteerana hamwe obwo kirikunywa oxygen y’omu mwanya kandi kireete ekinuuko ky’amaani eky’asidi. Na2S2O4 + 2H2O + O2 → 2NaHSO4 + 2[H] Okwotsya nari okushohoza...Shoma ebirikukiraho -
Ni bintu ki eby’omubiri ebiri omu sodium hydrosulfite?
Sodium hydrosulfite Emitwarize y‘omubiri Sodium hydrosulfite neeshoroorwa nk‘ekintu ky‘omutindo gwa 1 ekirikubaasa kukwatwa omuriro ahabw‘obutagatsi, kandi ekirikumanyirwa nka sodium dithionite. Nikiguzibwa omu miringo ebiri: ekirimu amaizi (Na2S2O4·2H2O) n’ekitarimu maizi (Na2S2O4). Enkora y'amaizi neereebeka nk'ekicupuri kirungi ekirikwera...Shoma ebirikukiraho