Mapepala Ofotokozera Zamalonda a Bisphenol A/BPA Bisphenol A (BPA)
Chidule cha Zamalonda
Chidule cha Zamalonda
Dzina la Chinthu: Bisphenol A (Chidule: BPA)
Fomula ya Mankhwala: C₁₅H₁₆O₂
Nambala ya CAS: 80-05-7
Nambala ya EINECS: 201-245-8
Gulu la Zamalonda: Oleochemicals; Ma Organic Synthetic Compounds
Mawonekedwe: Makristalo oyera ngati singano kapena ufa woyera wabwino (mtundu wa mafakitale ungawoneke ngati granular solids)
Katundu Wathupi ndi Mankhwala
| Katundu | Kufotokozera |
|---|---|
| Kulemera kwa Maselo | 228.29 g/mol |
| Malo Osungunuka | 158–159 °C (316–318 °F) |
| Malo Owira | 220 °C (428 °F) pa 4 mmHg (mkhalidwe wa vacuum) |
| Kuchulukana | 1.195 g/cm³ (25 °C) |
| Kusungunuka | Sungunuka m'madzi; Sungunuka mu zinthu zachilengedwe (monga ethanol, acetone, benzene, toluene, ndi ethyl acetate) |
| Pophulikira | 227 °C (chikho chotsekedwa) |
| Kukhazikika | Yokhazikika pansi pa kutentha ndi kupanikizika kwabwinobwino; yogwirizana ndi kuwala kwa ultraviolet (UV) (ingawonongeke kapena kusinthika mtundu wake ukakhudzidwa ndi kuwala kwa UV kwa nthawi yayitali); pewani kukhudzana ndi oxidizers amphamvu, ma acid, ndi alkali |
Mapulogalamu Apakati
Bisphenol A ndi gawo lofunika kwambiri pakupanga ma polima ogwira ntchito kwambiri komanso zipangizo zamafakitale, ndipo pali magawo ofunikira ogwiritsira ntchito:
Kupanga Pulasitiki ya Polycarbonate (PC)
Popeza ndi chinthu chachikulu chopangira pulasitiki ya PC, BPA imalola kupanga zinthu zosasweka komanso zosatentha monga zida zamagetsi (ma laputopu, mafoni a m'manja), zida zamagalimoto (zophimba ma headlight, mapanelo amkati), ndi zotengera zolumikizirana ndi chakudya (zoyang'aniridwa kuti zikhale zotetezeka m'madera ambiri).
Kupanga kwa Epoxy Resin
Amagwiritsidwa ntchito popanga ma epoxy resins ophikira (monga, zophimba zamkati mwa chitini, zophimba zamakampani zotsutsana ndi dzimbiri), zomatira (zomatira zamphamvu kwambiri zogwirira ntchito mumlengalenga ndi zomangamanga), ndi zipangizo zamagetsi zotetezera kutentha (mabwalo ozungulira, zotchingira transformer).
Ntchito Zina Zamakampani
Zipangizo zopangira polyether polyols (zomwe zimagwiritsidwa ntchito mu thovu la polyurethane).
Zowonjezera mu mapulasitiki, zoletsa moto, ndi zokhazikika za UV pazinthu za polima.
Pakati pa kapangidwe ka mankhwala apadera (monga ma antioxidants, utoto).
Miyezo Yabwino
Zogulitsa zathu za Bisphenol A zimagwirizana ndi miyezo yapadziko lonse lapansi ya mafakitale ndi chitetezo, ndi zizindikiro zodziwika bwino zoyeretsera ukhondo ndi zodetsa motere:
| Mndandanda | Giredi Yamakampani (Yachizolowezi) | Reagent Giredi (Kuyera Kwambiri) |
|---|---|---|
| Chiyero (HPLC) | ≥ 99.5% | ≥ 99.8% |
| Chinyezi Chokwanira | ≤ 0.1% | ≤ 0.05% |
| Zamkati mwa Phulusa | ≤ 0.01% | ≤ 0.005% |
| Zonyansa zachitsulo cholemera (Pb, Cd, Hg) | ≤ 10 ppm | ≤ 1 ppm |
| Zotsalira za Phenol | ≤ 0.2% | ≤ 0.05% |
Mafotokozedwe okonzedwa ndi anthu amapezeka pa zosowa zamakampani (monga, magiredi otsika a chidetso popanga zinthu zokhudzana ndi chakudya).
Malangizo Osungira ndi Kusamalira
Kuti muwonetsetse kuti chinthucho chili chokhazikika komanso chotetezeka kugwira ntchito, tsatirani izi zofunika posungira ndi kusamalira:
Mikhalidwe Yosungira
Kutentha: Sungani pamalo ozizira komanso ouma pa 15–25 °C; pewani kutentha kwambiri (>30 °C) kapena kuzizira (
Kuwala: Gwiritsani ntchito zotengera zosawoneka bwino (monga mabotolo agalasi ofiirira, migolo ya pulasitiki ya HDPE yokhala ndi chitetezo cha UV) kuti mupewe kuwonongeka ndi UV.
Chinyezi: Sungani chinyezi chochepera 60%; onjezerani ma desiccant (silika gel, anhydrous calcium chloride) m'zidebe kuti musamamatire.
Zofunikira pa Kusindikiza
Sungani ziwiya zotsekedwa bwino mukatha kugwiritsa ntchito nthawi iliyonse kuti mupewe kuyamwa kwa chinyezi ndi kuipitsidwa. Pewani kugwiritsa ntchito njira zotsekera kwakanthawi (monga pulasitiki wokutira) zomwe zingayambitse kuipitsidwa kwa madzi.
Malangizo Oteteza
Valani zida zodzitetezera (PPE): Chigoba cha fumbi, magolovesi osagwira mankhwala, ndi magalasi oteteza mukamagwira ntchito (makamaka ngati ufa/tinthu tating'onoting'ono).
Mpweya wabwino: Onetsetsani kuti mpweya ukuyenda bwino m'malo osungiramo ndi ogwirira ntchito kuti fumbi kapena nthunzi zisaunjikane.
Kusamalira Kutaya Madzi: Tsukani zinthu zomwe zatayikira ndi zinthu zosayamwa madzi (diatomaceous earth, activated carbon); tayani zinyalala motsatira malamulo a mankhwala oopsa am'deralo.
Kutsatira Malamulo
Zoletsa Padziko Lonse: Zikutsatira malamulo a EU REACH Regulation (Annex XVII) pa BPA mu zinthu zokhudzana ndi chakudya (monga zoletsedwa m'mabotolo oyamwitsa ana).
US FDA: Ikutsatira malangizo a FDA okhudza kugwiritsa ntchito BPA mu zophimba chakudya ndi mapulasitiki (21 CFR 175.300).
Miyezo ya ku China: Ikutsatira GB 4806.6 (miyezo yachitetezo cha ma resini apulasitiki okhudzana ndi chakudya).
Kupaka ndi Kusunga Shelufu
Zosankha Zopaka:
Kalasi ya Mafakitale: Matumba apulasitiki a HDPE 25 kg (okhala ndi zophimba zamkati za polyethylene) kapena ng'oma za ulusi wa 500 kg (zokutidwa ndi zojambulazo za aluminiyamu).
Mtundu wa Reagent: Mabotolo agalasi a amber a 1 kg (otsekedwa ndi zipewa za Teflon).
Moyo wa Shelf: Miyezi 24 kuyambira tsiku lopanga (mukasunga motsatira zomwe zili pamwambapa, osatsegulidwa).
Fomu Yowunikira Ubwino wa Bisphenol A
| Wofufuza | Chigawo | Kufotokozera | Zotsatira | Njira Yoyesera |
| Maonekedwe | / | Yoyera yopyapyala kapena yopindika, Yopanda zonyansa zamakina | Duwa loyera, Lopanda zonyansa zamakina | GB/T 28113-2011 |
| Bisphenol A | Mu/% | ≥99.85 | 99.925 | GB/T 28113-2011 |
| Phenol | Mu/% | ≤0.005 | 0.001 | GB/T 28113-2011 |
| 2,4-Isomer | Mu/% | ≤0.050 | 0.01 | GB/T 28113-2011 |
| Mfundo Yoyera | °C | ≥156.6 | 157.2 | GB/T 28113-2011 |
| Chroma Yosungunuka | Mtundu, Pt-Co (Hazen Unit) | ≤20 | 10 | GB/T 28113-2011 |
| Chroma Yankho | Mtundu, Pt-Co (Hazen Unit) | / | 5 | GB/T 28113-2011 |
| Chinyezi | Mu/% | ≤0.08 | 0.02 | GB/T 6283-2008 |