Daim Ntawv Qhia Txog Khoom Bisphenol A/BPA Bisphenol A (BPA)
Txheej Txheem Cej Luam Khoom
Txheej txheem cej luam ntawm cov khoom
Lub Npe Khoom: Bisphenol A (Lus luv: BPA)
Cov mis tshuaj: C₁₅H₁₆O₂
Tus lej CAS: 80-05-7
Tus lej EINECS: 201-245-8
Pawg Khoom: Oleochemicals; Cov Tshuaj Sib Xyaws Organic Synthetic
Tsos: Cov siv lead ua dawb zoo li koob los yog hmoov dawb me me (qib kev lag luam yuav zoo li cov khoom khov me me)
Cov Khoom Siv Lub Cev thiab Tshuaj
| Vaj tse | Cov Lus Qhia Tshwj Xeeb |
|---|---|
| Qhov Hnyav Molecular | 228.29 g/mol |
| Qhov Kub Yaj | 158–159 °C (316–318 °F) |
| Kub Kub | 220 °C (428 °F) ntawm 4 mmHg (qhov chaw nqus tsev) |
| Qhov Ceev | 1.195 g/cm³ (25 °C) |
| Kev yaj tau | Insoluble hauv dej; soluble hauv cov kuab tshuaj organic (piv txwv li, ethanol, acetone, benzene, toluene, thiab ethyl acetate) |
| Qhov Teeb Meem | 227 ° C (khob kaw) |
| Kev Ruaj Ntseg | Ruaj khov nyob rau hauv qhov kub thiab txias ib txwm muaj; rhiab heev rau lub teeb ultraviolet (UV) (tej zaum yuav lwj lossis hloov xim nrog kev raug UV ntev); tsis txhob kov cov oxidizers muaj zog, kua qaub, thiab alkalis. |
Cov Ntawv Thov Tseem Ceeb
Bisphenol A yog ib qho tseem ceeb hauv kev tsim cov polymers ua tau zoo thiab cov ntaub ntawv kev lag luam, nrog rau cov teb tseem ceeb hauv qab no:
Kev Tsim Khoom Yas Polycarbonate (PC)
Ua cov khoom siv tseem ceeb rau PC yas, BPA ua rau muaj peev xwm tsim cov khoom uas tsis tawg, tiv taus cua sov xws li cov khoom siv hluav taws xob (laptops, smartphones), cov khoom siv hauv tsheb (lub hau teeb taub hau, cov vaj huam sib luag sab hauv), thiab cov thawv ntim khoom noj (tswj hwm rau kev nyab xeeb hauv feem ntau thaj chaw).
Kev tsim cov tshuaj epoxy
Siv los tsim cov epoxy resins rau cov txheej txheej (piv txwv li, cov ntaub sab hauv lub kaus poom, cov txheej txheem tiv thaiv xeb hauv kev lag luam), cov nplaum (cov nplaum muaj zog rau kev tsav dav hlau thiab kev tsim kho), thiab cov ntaub ntawv rwb thaiv hluav taws xob (cov laug cam, cov xov hluav taws xob transformer).
Lwm yam kev siv hauv kev lag luam
Cov khoom siv raw rau polyether polyols (siv rau hauv polyurethane ua npuas ncauj).
Cov khoom ntxiv rau hauv cov plasticizers, flame retardants, thiab UV stabilizers rau cov ntaub ntawv polymer.
Nruab nrab hauv kev tsim cov tshuaj tshwj xeeb (piv txwv li, cov tshuaj antioxidants, cov xim pleev).
Cov Qauv Zoo
Peb cov khoom Bisphenol A ua raws li cov qauv kev lag luam thiab kev nyab xeeb thoob ntiaj teb, nrog rau cov cim qhia kev huv thiab kev tswj hwm kev ua qias tuaj raws li hauv qab no:
| Cov Ntawv Qhia | Qib Kev Lag Luam (Ib txwm muaj) | Qib Reagent (High Purity) |
|---|---|---|
| Kev Huv Si (HPLC) | ≥ 99.5% | ≥ 99.8% |
| Cov ntsiab lus noo noo | ≤ 0.1% | ≤ 0.05% |
| Cov ntsiab lus tshauv | ≤ 0.01% | ≤ 0.005% |
| Cov Khoom Siv Hlau Hnyav (Pb, Cd, Hg) | ≤ 10 ppm | ≤ 1 ppm |
| Phenol Residues | ≤ 0.2% | ≤ 0.05% |
Muaj cov lus qhia tshwj xeeb rau kev lag luam tshwj xeeb (piv txwv li, cov qib tsis muaj kuab paug rau kev tsim cov khoom siv sib cuag nrog zaub mov).
Cov Lus Qhia Txog Kev Khaws Cia & Kev Siv
Yuav kom cov khoom ruaj khov thiab muaj kev nyab xeeb thaum ua haujlwm, ua raws li cov kev cai khaws cia thiab tuav cov khoom no:
Cov xwm txheej khaws cia
Kub: Khaws cia rau qhov chaw txias thiab qhuav ntawm 15–25 °C; tsis txhob kub heev (>30 °C) lossis khov (
Teeb: Siv cov thawv uas tsis pom kev (piv txwv li, lub raj mis iav xim av, cov thoob yas HDPE uas muaj kev tiv thaiv UV) kom tiv thaiv kev puas tsuaj los ntawm UV.
Av noo: Tswj kom av noo tsawg dua 60%; ntxiv cov tshuaj desiccants (silica gel, anhydrous calcium chloride) rau hauv cov thawv kom tsis txhob ua pob.
Cov Kev Cai Rau Kev Sealing
Khaws cov thawv kom nruj tom qab siv txhua zaus kom tiv thaiv kom tsis txhob nqus tau dej noo thiab ua rau muaj kuab paug. Tsis txhob siv cov txheej txheem kaw ib ntus (piv txwv li, yas qhwv) uas yuav ua rau muaj kuab paug.
Kev Ceev Faj Txog Kev Nyab Xeeb
Hnav cov khoom siv tiv thaiv tus kheej (PPE): Lub npog ntsej muag plua plav, hnab looj tes tiv taus tshuaj lom neeg, thiab cov tsom iav tiv thaiv kev nyab xeeb thaum tuav (tshwj xeeb tshaj yog rau cov hmoov/cov khoom me me).
Kev Pa: Xyuas kom muaj cua nkag tau zoo hauv cov chaw khaws khoom thiab cov chaw tuav khoom kom tsis txhob muaj hmoov av lossis pa dej sib sau ua ke.
Kev Tswj Xyuas Kev Nchuav: Ntxuav cov nchuav nrog cov tshuaj nqus dej tsis muaj zog (diatomaceous earth, activated carbon); pov tseg cov khib nyiab raws li cov cai hauv zos txog tshuaj lom neeg txaus ntshai.
Kev Ua Raws Cai
Kev Txwv Thoob Ntiaj Teb: Ua raws li EU REACH Regulation (Annex XVII) cov kev txwv ntawm BPA hauv cov khoom siv sib cuag nrog zaub mov (piv txwv li, txwv tsis pub siv rau hauv cov raj mis pub mis rau menyuam yaus).
FDA Tebchaws Meskas: Ua tau raws li FDA cov lus qhia rau kev siv BPA hauv cov khoom siv pleev xim rau zaub mov thiab cov yas (21 CFR 175.300).
Cov Qauv Tuam Tshoj: Ua raws li GB 4806.6 (cov qauv kev nyab xeeb rau cov yas sib cuag nrog zaub mov).
Ntim Khoom & Lub Sij Hawm Khaws Khoom
Cov Kev Xaiv Ntim Khoom:
Qib Kev Lag Luam: 25 kg HDPE hnab yas (nrog cov polyethylene sab hauv) lossis 500 kg fiber nruas (nrog ntawv ci txhuas).
Qib Reagent: 1 kg lub raj mis iav xim av (kaw nrog lub hau Teflon).
Lub Sij Hawm Khaws Cia: 24 lub hlis txij li hnub tsim khoom (thaum khaws cia raws li cov xwm txheej saum toj no, tsis tau qhib).
Daim Ntawv Tshuaj Xyuas Zoo rau Bisphenol A
| Analyte | Chav tsev | Cov Lus Qhia Tshwj Xeeb | Qhov tshwm sim | Txoj Kev Ntsuas |
| Qhov tsos | / | Dawb granular los yog flaky, Tsis muaj mechanical impurities | Dawb granular, Tsis muaj mechanical impurities | GB/T 28113-2011 |
| Bisphenol A | Hauv/% | ≥99.85 | 99.925 | GB/T 28113-2011 |
| Phenol | Hauv/% | ≤0.005 | 0.001 | GB/T 28113-2011 |
| 2,4-Isomer | Hauv/% | ≤0.050 | 0.01 | GB/T 28113-2011 |
| Crystalline Point | °C | ≥156.6 | 157.2 | GB/T 28113-2011 |
| Chroma yaj | Xim, Pt-Co (Hazen Unit) | ≤20 | 10 | GB/T 28113-2011 |
| Kev daws teeb meem Chroma | Xim, Pt-Co (Hazen Unit) | / | 5 | GB/T 28113-2011 |
| Cov dej noo | Hauv/% | ≤0.08 | 0.02 | GB/T 6283-2008 |