Xaashida Tilmaamaha Badeecada Bisphenol A/BPA
Dulmar Guud oo ku saabsan Badeecada
Dulmar Guud ee Badeecada
Magaca Badeecada: Bisphenol A (Soo gaabin: BPA)
Qaaciddada Kiimikada: C₁₅H₁₆O₂
Lambarka CAS: 80-05-7
Lambarka EINECS: 201-245-8
Qaybta Badeecada: Oleochemicals; Isku-dhafka Dabiiciga ah
Muuqaal: Kilaasooyin cad oo u eg irbad ama budo cad oo khafiif ah (heer warshadeed ayaa u muuqan kara sida adag oo granular ah)
Sifooyinka Jirka iyo Kiimikada
| Hantida | Faahfaahinta |
|---|---|
| Miisaanka Molekulerka | 228.29 g/mol |
| Barta Dhalmada | 158–159 °C (316–318 °F) |
| Barta Karkarinta | 220 °C (428 °F) marka heerkulku yahay 4 mmHg (xaalad faakiyuum ah) |
| Cufnaanta | 1.195 g/cm³ (25 °C) |
| Milmida | Ku milmi karin biyaha; ku milmi kara dareere dabiici ah (tusaale ahaan, ethanol, acetone, benzene, toluene, iyo ethyl acetate) |
| Barta Iftiiminta | 227 °C (koob xiran) |
| Xasilloonida | Xasilloon heerkulka iyo cadaadiska caadiga ah; u nugul iftiinka ultraviolet (UV) (wuxuu hoos u dhigi karaa ama isbeddeli karaa marka la soo bandhigo UV-ga muddada dheer); iska ilaali inaad la xiriirto oksaydhiyeyaasha xooggan, asiidhyada, iyo alkalis |
Codsiyada Muhiimka ah
Bisphenol A waa dhexdhexaad muhiim ah oo ku saabsan soo saarista polymers-ka waxqabadka sare leh iyo agabka warshadaha, iyadoo leh meelaha codsiga muhiimka ah ee soo socda:
Soo saarista Balaastikada Polycarbonate (PC)
Maadaama ay tahay walaxda ugu weyn ee ceeriin ee loogu talagalay balaastikada PC-ga, BPA waxay awood u siineysaa soo saarista alaabada u adkaysta kulaylka, sida guryaha qalabka elektarooniga ah (laptop-yada, taleefannada casriga ah), qaybaha baabuurta (daboollada nalalka hore, muraayadaha gudaha), iyo weelasha cuntada lagu xiro (oo loo habeeyey badbaadada inta badan gobollada).
Isku-darka Resin Epoxy
Waxaa loo isticmaalaa in lagu soo saaro resin epoxy ah oo loogu talagalay dahaarka (tusaale ahaan, dahaarka gudaha ee qasacadda, dahaarka warshadaha ee ka hortagga daxalka), dhejisyada (dhajisyada qaab-dhismeedka ee xoogga badan ee hawada sare iyo dhismaha), iyo agabka dahaarka korontada (looxyada wareegga, dahaarka transformer-ka).
Isticmaalka kale ee warshadaha
Walax ceeriin ah oo loogu talagalay polyether polyols (oo loo isticmaalo xumbada polyurethane).
Wax lagu daro balaastikada, kuwa dabka qaboojiya, iyo xasiliyeyaasha UV ee walxaha polymer-ka.
Dhexdhexaad ahaan isku-darka kiimikooyinka gaarka ah (tusaale ahaan, antioxidants, midabyo).
Heerarka Tayada
Badeecooyinkeenna Bisphenol A waxay u hoggaansamaan heerarka warshadaha iyo badbaadada caalamiga ah, iyadoo la raacayo tilmaamaha caadiga ah ee nadiifinta iyo xakamaynta wasakhda sida soo socota:
| Tusmada | Heerka Warshadaha (Caadi ahaan) | Heerka Reagent (Safiir Sare) |
|---|---|---|
| Nadiifnimo (HPLC) | ≥ 99.5% | ≥ 99.8% |
| Qoyaanka ku jira | ≤ 0.1% | ≤ 0.05% |
| Waxyaabaha Dambaska ah | ≤ 0.01% | ≤ 0.005% |
| Nadaafadda Birta Culus (Pb, Cd, Hg) | ≤ 10 ppm | ≤ 1 ppm |
| Haraaga Phenol | ≤ 0.2% | ≤ 0.05% |
Tilmaamaha gaarka ah ayaa loo heli karaa baahiyaha warshadaha ee gaarka ah (tusaale ahaan, heerarka wasakhda yar ee wax soo saarka agabka cuntada la taabto).
Tilmaamaha Kaydinta iyo Maareynta
Si loo hubiyo xasilloonida badeecada iyo badbaadada hawlgalka, raac shuruudahan kaydinta iyo maaraynta:
Xaaladaha Kaydinta
Heerkulka: Ku kaydi jawi qabow oo qalalan heerkul ah 15–25 °C; ka fogow kulaylka xad-dhaafka ah (>30 °C) ama barafowga (
Iftiin: Isticmaal weelal aan caddayn (tusaale ahaan, dhalooyinka galaaska buniga ah, durbaanka balaastikada ah ee HDPE oo leh ilaalin UV) si looga hortago burburka uu keeno UV.
Qoyaanka: Ku hay qoyaan qaraabo ah
Shuruudaha Shaabadeynta
Weelasha si adag u xidh ka dib isticmaal kasta si looga hortago nuugista qoyaanka iyo wasakhowga. Iska ilaali inaad isticmaasho hababka ku meel gaarka ah ee shaabadaynta (tusaale ahaan, duub balaastig ah) oo sababi kara wasakhayn isdhaaf ah.
Taxaddarrada Badbaadada
Xiro qalabka ilaalinta shaqsiga (PPE): Maaskaro boodhka ah, galoofisyo u adkaysta kiimikada, iyo muraayadaha badbaadada marka aad taabanayso (gaar ahaan noocyada budada/qallalanka).
Hawo-qaadista: Hubi in hawo-qaad wanaagsan ay ku jirto meelaha lagu kaydiyo iyo meelaha lagu maareeyo si looga fogaado in boorka ama uumiga uumigu ku ururo.
Maareynta Daadinta: Ku nadiifi waxyaabaha daadanaya nuugayaasha aan firfircoonayn (dhulka diatomaceous, kaarboon firfircoon); ku tuur qashinka si waafaqsan xeerarka kiimikada khatarta ah ee deegaanka.
U hoggaansanaanta Sharciyeed
Xaddidaadaha Caalamiga ah: Waxay u hoggaansan tahay xayiraadaha Xeerka EU REACH (Lifaaqa XVII) ee ku saabsan BPA ee agabka cuntada lagu taabto (tusaale ahaan, waa mamnuuc in lagu daro dhalooyinka quudinta carruurta).
FDA-da Mareykanka: Waxay buuxisaa tilmaamaha FDA ee ku saabsan isticmaalka BPA ee dahaarka cuntada iyo balaastikada (21 CFR 175.300).
Heerarka Shiinaha: Waxay u hoggaansan tahay GB 4806.6 (heerarka badbaadada ee resins-ka balaastikada ah ee cuntada taabta).
Baakadaha iyo cimriga kaydinta
Ikhtiyaarada Baakadaha:
Heerka Warshadaha: 25 kg bacaha balaastikada ah ee HDPE (oo leh dahaarka gudaha ee polyethylene) ama 500 kg foosto oo fiber ah (oo lagu dahaadhay bir aluminium ah).
Heerka Reagent: 1 kg dhalooyin galaas ah oo amber ah (oo lagu shaabadeeyay daboolo Teflon ah).
Muddada Shelf-ka: 24 bilood laga bilaabo taariikhda wax soo saarka (marka lagu kaydiyo si waafaqsan shuruudaha kor ku xusan, aan la furin).
Foomka Baarista Tayada ee Bisphenol A
| Falanqeeye | Cutubka | Faahfaahinta | Natiijo | Habka Tijaabada |
| Muuqaalka | / | Granule cad ama jajaban, Iyada oo aan lahayn wasakh farsamo | Granule cad, iyada oo aan lahayn wasakh farsamo | GB/T 28113-2011 |
| Bisfenol A | Gudaha/% | ≥99.85 | 99.925 | GB/T 28113-2011 |
| Feneel | Gudaha/% | ≤0.005 | 0.001 | GB/T 28113-2011 |
| 2,4-Isomer | Gudaha/% | ≤0.050 | 0.01 | GB/T 28113-2011 |
| Barta Kiristariga | °C | ≥156.6 | 157.2 | GB/T 28113-2011 |
| Chroma La shubay | Midabka, Pt-Co (Cutubka Hazen) | ≤20 | 10 | GB/T 28113-2011 |
| Xalka Chroma | Midabka, Pt-Co (Cutubka Hazen) | / | 5 | GB/T 28113-2011 |
| Qoyaanka | Gudaha/% | ≤0.08 | 0.02 | GB/T 6283-2008 |