Akụkọ
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Kedu ka esi chịkọta bisphenol A BPA?
Nchịkọta nke Bisphenol A BPA E mepụtara ya na 1936 dị ka estrogen sịntetik, a na-emepụta bisphenol A (BPA) ugbu a na olu kwa afọ karịrị ijeri paụnd isii. A na-ejikarị Bisphenol A BPA eme ihe dị ka ihe owuwu maka plastik polycarbonate, nke a na-ahụ na ngwaahịa dịka nwa b...GỤKWUO -
Kedu ihe bụ ojiji nke bisphenol A n'ime ọgwụ?
resin polycarbonate na epoxy. A na-ejikwa ya eme ihe n'ịmepụta plastik injinịa dị mkpa dịka polysulfone, yana tetrabromobisphenol A, nke a na-ejikarị eme ihe dị ka ihe na-egbochi ire ọkụ. Polycarbonate (onye na-azụ bisphenol A kachasị ukwuu) bụ ihe na-enweghị ụtọ, enweghị isi, anaghị egbu egbu, ma na-enweghị...GỤKWUO -
Gịnị ka a na-eji bisphenol a bpa eme?
A na-ejikarị Bisphenol a bpa eme ihe n'ọtụtụ ebe n'imepụta ihe dị iche iche nke polymer, dịka epoxy resins, polycarbonates, polysulfones, phenolic unsaturated resins, polyphenylene ether resins, polyaryl compounds, polyetherimides, tetrabromobisphenol A, PVC heat stabilizers, roba antioxidants, agricu...GỤKWUO -
Kedu ihe bụ isi mmiri nke bisphenol A?
Bisphenol A (BPA), nke a makwaara dị ka diphenylolpropane ma ọ bụ (4-hydroxyphenyl)propane, na-emepụta kristal prismatic na kristal ethanol na-agbaze agbaze na kristal dị ka agịga n'ime mmiri. Ọ na-ere ọkụ ma nwee obere isi phenolic. Ebe agbaze ya bụ 157.2°C, ebe ọkụ bụ 79.4°C, ebe ọkụ bisphenol A bụ 2...GỤKWUO -
Kedu ihe bụ Bisphenol A?
Ozi Nkịtị Bisphenol A (bpa) Bisphenol A, nke a makwaara dị ka BPA, bụ ihe mejupụtara organic nwere usoro molekul C₁₅H₁₆O₂. N'ụlọ ọrụ mmepụta ihe, a na-eji ya eme ihe n'imepụta ihe dịka polycarbonate (PC) na resin epoxy. Kemgbe afọ 1960, ejirila BPA mee ihe n'imepụta plastik...GỤKWUO -
Kedu otu esi eji sodium hydrosulfite ewepụ agba?
Ụzọ Ịwepụ Ntụpọ E Ji Agbapụ Maka Uwe Ọcha Usoro Ịsa Mmiri Iko Sodium hydrosulfite Ọ bụrụ na enwere ntụpọ ebe a na-agba, jiri iko a gbanyere agbaze maka ịsa ahụ. Wụsa mmiri ọkụ ụfọdụ (karịa 90°C) n'ime iko ahụ. Tinye sodium hydrosulfite (ihe dị ka 2.5%) ma gwakọta ya ka ọ gbazee. Mikpuo...GỤKWUO -
Kedu ụdị ịdị adị nke sodium dithionite?
Àgwà Anụ Ahụ: A na-ekewa Sodium dithionite dị ka ihe na-ere ọkụ nke ọkwa 1. A makwaara ya dị ka Rongalite n'ahịa, ọ dị n'ụdị abụọ: Na₂S₂O₄·2H₂O na Na₂S₂O₄ anhydrous. Nke mbụ bụ kristal ọcha dị mma, ebe nke ikpeazụ bụ ntụ ntụ odo odo dị mfe. Njupụta ya dị...GỤKWUO -
Ihe Na-ebelata Mbelata: Sodium Hydrosulfite
Ihe Na-ebelata Mbelata: Sodium Hydrosulfite Aha Kemịkalụ: Sodium dithionite. Ma e jiri ya tụnyere ihe ndị na-eme ka oxidizing dị, sodium hydrosulfite anaghị emebi ákwà nke ọma. Enwere ike iji ya mee ihe n'ákwà e ji eriri dị iche iche mee n'enweghị ihe ọ bụla, nke a bụ aha ya bụ "hydrosulfite" (nke pụtara nchekwa ya). Ọ...GỤKWUO -
Kedu ọrụ sodium hydrosulfite na eriri ákwà?
Eriri kwesịrị ekwesị maka sodium hydrosulfite sodium hydrosulfite dabara adaba maka eriri ákwà dị iche iche, ya mere aha ya bụ "Rongalite." Mgbe ejiri ya mee ihe maka ịcha ọcha ma ọ bụ iwepụ ntụpọ n'oge okpomọkụ dị elu, eriri ákwà ahụ ga-enwerịrị ike iguzogide okpomọkụ dị elu na-enweghị mmebi. N'ihe gbasara asambodo...GỤKWUO -
Kedu ihe nwere ike ime ka sodium hydrosulfite ghara ịdị irè?
Sodium hydrosulfite bụ ihe na-egbu egbu ma nwee ike ịkpasu anya na akpụkpọ ahụ nke akụkụ iku ume iwe. A na-ejikarị ya eme ihe n'ụlọ ọrụ ákwà maka ibelata agba, ibelata nhicha, ibipụta ihe, ịgbanwe agba, na ịcha silk, ajị anụ, naịlọn, na ákwà ndị ọzọ. Ebe ọ bụ na ọ nweghị ígwè dị arọ, ákwà ndị a na-ete ọcha na...GỤKWUO -
Gịnị ga-eme ma ọ bụrụ na a kpughee sodium hydrosulfite n'ikuku?
Mgbe e tinyere ya n'ikuku, sodium hydrosulfite na-amịkọrọ oxygen ngwa ngwa ma na-eme ka oxidizes dị. Ọ na-amịkọrọkwa mmiri, na-emepụta okpomọkụ ma na-ebute mmebi. Ọ nwere ike ịrakọta ọnụ ma na-amịkọrọ oxygen ikuku ma na-ewepụta isi acidic siri ike. Na₂S₂O₄ + 2H₂O + O₂ → 2NaHSO₄ + 2[H] Ịkpo ọkụ ma ọ bụ ikpughe...GỤKWUO -
Kedu ihe bụ ihe ndị dị na sodium hydrosulfite?
Àgwà Anụ Ahụ Sodium hydrosulfite A na-ekewa Sodium hydrosulfite dị ka ihe na-ere ọkụ nke nwere ike ịdị nro na mmiri nke ọkwa 1, nke a makwaara dị ka sodium dithionite. A na-enweta ya n'ahịa n'ụdị abụọ: mmiri mmiri (Na₂S₂O₄·2H₂O) na mmiri mmiri mmiri (Na₂S₂O₄). Ụdị mmiri mmiri ahụ na-apụta dị ka ezigbo crystal ọcha...GỤKWUO