Leqephe la Tlhaloso ea Sehlahisoa sa Bisphenol A/BPA Bisphenol A (BPA)
Kakaretso ea Sehlahisoa
Kakaretso ea Sehlahisoa
Lebitso la Sehlahisoa: Bisphenol A (Kgutsufatso: BPA)
Foromo ea Lik'hemik'hale: C₁₅H₁₆O₂
Nomoro ea CAS: 80-05-7
Nomoro ea EINECS: 201-245-8
Sehlopha sa Sehlahisoa: Lik'hemik'hale tsa Oleo; Metsoako ea Maiketsetso ea Organic
Ponahalo: Likristale tse tšoeu tse kang nale kapa phofo e tšoeu e ntle (sehlopha sa indasteri se ka hlaha e le lintho tse tiileng tse nang le granular)
Thepa ea 'Mele le ea Lik'hemik'hale
| Thepa | Tlhaloso |
|---|---|
| Boima ba limolek'hule | 228.29 g/mol |
| Sebaka sa ho Qhibiliha | 158–159 °C (316–318 °F) |
| Sebaka sa ho bela | 220 °C (428 °F) ho 4 mmHg (boemo ba vacuum) |
| Botenya | 1.195 g/cm³ (25 °C) |
| Ho qhibiliha ha metsi | Ha e qhibilihe ka metsing; e qhibiliha ka har'a metsoako ea lintho tse phelang (mohlala, ethanol, acetone, benzene, toluene, le ethyl acetate) |
| Flash point | 227 °C (kopi e koetsoeng) |
| Botsitso | E tsitsitse tlas'a mocheso o tloaelehileng le khatello; e utloa bohloko khanyeng ea ultraviolet (UV) (e ka 'na ea senyeha kapa ea fetoha 'mala ha e pepesehetse UV nako e telele); qoba ho kopana le li-oxidizer tse matla, li-acid le li-alkali |
Likopo tsa mantlha
Bisphenol A ke karolo ea bohlokoa tlhahisong ea li-polymer tse sebetsang hantle le thepa ea indasteri, ka masimo a bohlokoa a latelang a ts'ebeliso:
Tlhahiso ea polasetiki ea Polycarbonate (PC)
Jwalo ka thepa ya mantlha e tala bakeng sa polasetiki ya PC, BPA e nolofalletsa tlhahiso ya dihlahiswa tse hanelang ho pshatleha, tse hanelang mocheso tse kang dikobo tsa disebediswa tsa elektroniki (dilaptop, di-smartphone), dikarolo tsa dikoloi (dikobo tsa mabone a hlooho, diphanele tsa kahare), le dijana tsa ho kopana le dijo (tse laolwang bakeng sa polokeho dibakeng tse ngata).
Ho kopanya Epoxy Resin
E sebelisoa ho hlahisa li-resin tsa epoxy bakeng sa ho roala (mohlala, masela a ka hare a kariki, liphahlo tsa indasteri tse thibelang mafome), likhomaretsi (likhomaretsi tsa sebopeho tse matla haholo bakeng sa lifofane le kaho), le thepa ea ho thibela motlakase (liboto tsa potoloho, li-winding tsa transformer).
Tšebeliso e 'Ngoe ea Liindasteri
Thepa e tala bakeng sa polyether polyols (e sebelisoang ho foam ea polyurethane).
E eketsa lintho tse etsang hore polastiki e be matla, tse thibelang malakabe le tse tiisang mahlaseli a kotsi a UV bakeng sa thepa ea polastiki.
E mahareng ho kopanyeng lik'hemik'hale tse ikhethang (mohlala, li-antioxidants, li-dyestuff).
Maemo a Boleng
Lihlahisoa tsa rona tsa Bisphenol A li latela maemo a lefats'e a indasteri le polokeho, ka matšoao a tloaelehileng a taolo ea bohloeki le litšila ka tsela e latelang:
| Index | Kereiti ea Indasteri (E Tloaelehileng) | Reagent Kereiti (Bohloeki bo Phahameng) |
|---|---|---|
| Bohloeki (HPLC) | ≥ 99.5% | ≥ 99.8% |
| Mongobo o teng | ≤ 0.1% | ≤ 0.05% |
| Dikahare tsa Molora | ≤ 0.01% | ≤ 0.005% |
| Litšila tsa 'Mele o Boima (Pb, Cd, Hg) | ≤ 10 ppm | ≤ 1 ppm |
| Masalla a Phenol | ≤ 0.2% | ≤ 0.05% |
Litlhaloso tse ikhethileng lia fumaneha bakeng sa litlhoko tse ikhethileng tsa indasteri (mohlala, limaraka tse tlase tsa litšila bakeng sa tlhahiso ea thepa ea ho kopana le lijo).
Tataiso ea Polokelo le Tsamaiso
Ho netefatsa botsitso ba sehlahisoa le polokeho ea ts'ebetso, latela litlhoko tsena tsa polokelo le ts'ebetso:
Maemo a Polokelo
Mocheso: Boloka tikolohong e pholileng, e omileng ho 15–25 °C; qoba mocheso o feteletseng (>30 °C) kapa ho hatsela (
Leseli: Sebelisa lijana tse sa bonahaleng (mohlala, libotlolo tsa khalase tse sootho, meropa ea polasetiki ea HDPE e nang le tšireletso ea UV) ho thibela ho senyeha ho bakoang ke UV.
Mongobo: Boloka mongobo o lekanyeditsweng
Litlhoko tsa ho tiisa
Boloka lijana li koetsoe ka thata kamora tšebeliso e 'ngoe le e 'ngoe ho thibela ho monngoa ha mongobo le tšilafalo. Qoba ho sebelisa mekhoa ea ho koala ea nakoana (mohlala, polasetiki e phuthetsoeng) e ka bakang tšilafalo e fapaneng.
Litlhokomelo tsa polokeho
Apara lisebelisoa tsa tšireletso tsa botho (PPE): Maske ea lerōle, liatlana tse hanyetsanang le lik'hemik'hale, le likhalase tsa tšireletso ha u li tšoara (haholo-holo bakeng sa mefuta ea phofo/granular).
Ho kenya moya: Netefatsa hore moya o phalla hantle libakeng tsa polokelo le tsa ts'ebetso ho qoba ho bokellana ha lerōle kapa mouoane.
Ho Sebetsana le ho Tšolla: Hloekisa lintho tse tšolohileng ka lintho tse monyang tse sa sebetseng (diatomaceous earth, activated carbon); lahla litšila ho latela melaoana ea lik'hemik'hale tse kotsi tsa sebakeng seo.
Ho Latela Melao
Lithibelo tsa Lefatše: E latela lithibelo tsa Molao oa EU REACH (Annex XVII) mabapi le BPA linthong tse amanang le lijo (mohlala, tse thibetsoeng ka libotlolong tsa ho fepa masea).
US FDA: E fihlela litataiso tsa FDA bakeng sa tšebeliso ea BPA ho liphahlo tse amanang le lijo le polasetiki (21 CFR 175.300).
Maemo a Chaena: E latela GB 4806.6 (maemo a polokeho bakeng sa li-resin tsa polasetiki tse kopanang le lijo).
Bophelo ba ho Paka le Shelefo
Dikgetho tsa ho Paka:
Sehlopha sa Indasteri: Mekotla ea polasetiki ea HDPE ea 25 kg (e nang le li-polyethylene tse ka hare) kapa meropa ea faeba ea 500 kg (e manehiloeng ka foil ea aluminium).
Sehlopha sa Reagent: Libotlolo tsa khalase tsa amber tsa 1 kg (tse koetsoeng ka likhaba tse koahetsoeng ka Teflon).
Bophelo ba Shelofo: Dikgwedi tse 24 ho tloha ka letsatsi la tlhahiso (ha e bolokwa ho latela maemo a ka hodimo, e sa bulwa).
Foromo ea Tlhahlobo ea Boleng bakeng sa Bisphenol A
| Setsebi | Yuniti | Tlhaloso | Sephetho | Mokhoa oa Teko |
| Ponahalo | / | E tšoeu e nang le matheba kapa e nang le matheba, Ntle le litšila tsa mechini | Bosweu bo bosweu, Ntle le ditshila tsa mechini | GB/T 28113-2011 |
| Bisphenol A | Ka hare/% | ≥99.85 | 99.925 | GB/T 28113-2011 |
| Phenol | Ka hare/% | ≤0.005 | 0.001 | GB/T 28113-2011 |
| 2,4-Isomere | Ka hare/% | ≤0.050 | 0.01 | GB/T 28113-2011 |
| Ntlha ea kristale | °C | ≥156.6 | 157.2 | GB/T 28113-2011 |
| Chroma e qhibilihisitsoeng | 'Mala, Pt-Co (Yuniti ea Hazen) | ≤20 | 10 | GB/T 28113-2011 |
| Tharollo ea Chroma | 'Mala, Pt-Co (Yuniti ea Hazen) | / | 5 | GB/T 28113-2011 |
| Mongobo | Ka hare/% | ≤0.08 | 0.02 | GB/T 6283-2008 |