I-Bisphenol A/BPA Liphepha Lekucacisa Umkhicito
Kubuka konkhe kwemkhicito
Kubuka konkhe kwemkhicito
Ligama Lemkhicito: Bisphenol A (Sifinyeto: BPA)
Ifomula Yemakhemikhali: C15H16O2
Inombolo ye-CAS: 80-05-7
Inombolo ye-EINECS: 201-245-8
Sigaba Semkhicito: Emakhemikhali e-Oleo; Emakhompawundi Lakhiwe Ngetilwane
Kubukeka: Ema crystals lamhlophe lafana nenyaliti noma imphuphu lemhlophe lencane (lizinga letimboni lingavela njengetintfo leticinile letinetinhlavu)
Timphahla Letibonakalako Netemakhemikhali
| Imphahla | Kucaciswa |
|---|---|
| Sisindvo Semamolekhyuli | 228.29 g/moli |
| Liphuzu Lekuncibilika | 158-159 °C (316-318 °F) |
| Liphuzu Lekubila | 220 °C (428 °F) ku 4 mmHg (simo se-vacuum) |
| Kuminyana | 1.195 g/sentimitha3 (25 °C) |
| Kuncibilika | Ayincibiliki emantini; kuncibilika etinhlayiyani letiphilako (sib., i-ethanol, i-asitoni, i-benzene, i-toluene, kanye ne-ethyl acetate) |
| Liphuzu Lekukhanya | 227 °C (inkomishi levaliwe) |
| Kusimama | Kuzinza ngaphansi kwekushisa lokujwayelekile kanye nekucindzeteleka; kuzwela kukhanya kwe ultraviolet (UV) (kungahle kwehle noma kushintje umbala ngekuchayeka sikhatsi lesidze ku UV); kugwema kutsintsana ne-oxidizer lenemandla, ema-esidi, kanye ne-alkali |
Ticelo letiyinhloko
Bisphenol A ngumkhakha lobalulekile ekukhiciteni ema polymers lasebenta kahle kakhulu kanye netintfo tetimboni, ngaletinsimu letilandzelako letibalulekile tekusebentisa:
Kukhicita Ipulasitiki Ye-Polycarbonate (PC)
Njengemphahla leluhlata leyinhloko yepulasitiki ye-PC, i-BPA yenta kutsi kukhicitwe imikhicito lengaphuki, lengashisi njengetindlu tetintfo te-elekthronikhi (ema-laptops, ema-smartphones), tincenye tetimoto (timbonyo temalambu, emaphaneli langekhatsi), kanye netitja tekutsintsana nekudla (letilawulwa kute kuphephe etigodzini letinyenti).
Kuhlanganiswa kwe-Epoxy Resin
Isetjentiselwa kukhicita ema-epoxy resins ekugcobisa (sib., kungaba ema-linings langekhatsi, ema-coatings etimboni lalwa nekugcola), ema-adhesives (ema-adhesives esakhiwo lasetulu emandla e-aerospace kanye nekwakha), kanye netintfo tekuvikela gezi (emabhodi esifundza, ema-transformer windings).
Letinye Tintfo Letisetjentiswa Etimbonini
Tintfo letiluhlata te-polyether polyols (letisetjentiswa kumagwebu e-polyurethane).
Intfo lengetiwe kumapulasitiki, tintfo letivimbela lilangabi, kanye neticinisa te-UV tetintfo te-polymer.
Sisemkhatsini ekuhlanganisweni kwemakhemikhali lakhetsekile (sib., ema-antioxidants, emadayi).
Emazinga elizinga
Imikhicito yetfu ye Bisphenol A ihambisana nemazinga emhlaba wonkhe etimbonini kanye nekuphepha, ngetinkhomba tekulawula kuhlanteka kanye nekungcola lokujwayelekile ngalendlela lelandzelako:
| Inkomba | Libanga Letimboni (Lelijwayelekile) | Lizinga Le-Reagent (Kuhlanteka Lokuphakeme) |
|---|---|---|
| Kuhlanteka (HPLC) | ≥ 99.5% | ≥ 99.8% |
| Lokucuketfwe ngumswakama | ≤ 0.1% | ≤ 0.05% |
| Lokucuketfwe nguMlotsa | ≤ 0.01% | ≤ 0.005% |
| Tinsimbi Letingcolile (Pb, Cd, Hg) | ≤ 10 emappm | ≤ 1 ppm |
| Tinsalela te-Phenol | ≤ 0.2% | ≤ 0.05% |
Tincazelo letikhetsekile tiyatfolakala ngetidzingo letitsite tetimboni (sib., emabanga laphansi-ekungcola ekukhicita tintfo letitsintsana nekudla).
Imihlahlandlela Yekugcina Nekuphatsa
Kucinisekisa kusimamisa umkhicito kanye nekuphepha kwekusebenta, landzela letidzingo tekugcina nekuphatsa:
Timo Tekugcina
Lizinga lekushisa: Gcina endzaweni lepholile, leyomile ku 15–25 °C; kugwema kushisa lokukhulu (>30 °C) noma kubandza (
Kukhanya: Sebentisa tintfo letingabonakali (sib., emabhodlela engilazi lansundvu, tigubhu tepulasitiki te HDPE letinekuvikeleka kwe UV) kuvikela kubola lokubangwa yi UV.
Umswakama: Gcina umswakama lohlobene
Tidzingo Tekuvala
Gcina titja tivalwe kahle ngemuva kwekusebentisa ngamunye kwentela kuvikela kutsatsa umswakama kanye nekungcola. Gwema kusebentisa tindlela tekuvala tesikhashana (sib., kugoca ngepulasitiki) letingabangela kungcola lokuphambukile.
Tinyatselo Tekuphepha
Gcoka tintfo tekutivikela (PPE): Sifonyo selutfuli, emagilavu lamelana nemakhemikhali, kanye netibuko tekuphepha uma uphatsa (ikakhulukati kumafomu emphuphu/etinhlavu).
Kufaka umoya: Ciniseka kutsi umoya uhamba kahle etindzaweni tekugcina kanye nekuphatsa kwentela kugwema lutfuli noma kugcwala kwemhwamuko.
Kuphatsa lokucitsekile: Hlanta lokucitsekile ngetintfo letimuncako letingasebenti (umhlabatsi we diatomaceous, icarbon lesebentako); kulahla imfucuza ngekuhambisana nemitsetfo yendzawo yemakhemikhali layingoti.
Kulandzela Umtsetfo
Imikhawulo Yemhlaba Wonkhe: Ihambisana neMtsetfosivivinyo we-EU REACH (Sijobelelo XVII) imikhawulo ye-BPA etintfweni letitsintsana nekudla (sib., kuvinjelwe emabhodleleni ekudlisa bantfwana labancane).
I-US FDA: Ihlangabetana nemihlahlandlela ye-FDA yekusetjentiswa kwe-BPA ekugcokeni lokutsintsana nekudla kanye nemapulasitiki (21 CFR 175.300).
Emazinga aseChina: Ahambisana ne-GB 4806.6 (emazinga ekuphepha ema-resin epulasitiki latsintsa kudla).
Kupakisha & Impilo Yeshelufu
Tindlela Tekupakisha:
Lizinga Letimboni: 25 kg emapulasitiki eHDPE (lanetindvwangu tangekhatsi te polyethylene) noma tigubhu te fibre letingu 500 kg (letifakwe nge aluminium foil).
Lizinga le Reagent: 1 kg emabhodlela engilazi e-amber (valiwe ngetimbonyo letilayiniwe nge Teflon).
Imphilo Yeshelufu: tinyanga letingu 24 kusuka ngelusuku lwekukhicita (uma igcinwe ngekulandzela lemibandzela lengenhla, ingakavulwa).
Lifomu Lekuhlola Lizinga Le-Bisphenol A
| Hlatiya | Lokukodvwa | Kucaciswa | Umphumela | Indlela Yekuhlola |
| Kuvela | / | Tinhlavu letimhlophe noma letinemacembe, Ngaphandle kwekungcola kwemshini | Tinhlavu letimhlophe, Ngaphandle kwekungcola kwemshini | 28113-2011 |
| I-Bisphenoli A | Ngekhatsi/% | ≥99.85 | 99.925 | 28113-2011 |
| Iphenoli | Ngekhatsi/% | ≤ 0.005 | 0.001 | 28113-2011 |
| 2,4-Isome | Ngekhatsi/% | ≤ 0.050 | 0.01 | 28113-2011 |
| Liphuzu Lelikhristalu | °C | ≥156.6 | 157.2 | 28113-2011 |
| I-Chroma Lencibilikile | Libala, i-Pt-Co (Iyunithi ye-Hazen) | ≤20 | 10 | 28113-2011 |
| Sisombululo se-Chroma | Libala, i-Pt-Co (Iyunithi ye-Hazen) | / | 5 | 28113-2011 |
| Kutsamba | Ngekhatsi/% | ≤ 0.08 | 0.02 | 6283-2008 |