Bisphenol A/BPA Bisphenol A (BPA) Orupapura orurikushoboorora aha kintu
Okureeba ebintu omu bwijwire
Okureeba ebintu omu bwijwire
Eiziina ry’ekintu: Bisphenol A (omubugufu: BPA)
Enkora y'eby'emibazi: C15H16O2
Enamba ya CAS: 80-05-7
Enamba ya EINECS: 201-245-8
Ekicweka ky’ebintu: Ebirungo by’amajuta; Ebirungo by'obuhangwa
Okureebeka: Ebicupuri ebiri nk’empeta ebirikwera nari empunu erikwera nungi (omutindo gw’amakorero nigubaasa kureebeka nk’ebintu ebigumire eby’obujuma)
Ebintu by'omubiri n'eby'emibazi
| Ekyobugaiga | Okushoborora |
|---|---|
| Oburemeezi bwa molekyu | 228.29 giraamu/mol |
| Enshonga y'okusheenya | 158-159 °C (316-318 °F) |
| Enshonga y'okufuka | 220 °C (428 °F) ahari 4 mmHg (embeera y‘obutafaari) |
| Oburemeezi | 1.195 giraamu/sentimita3 (25 °C) |
| Okushohoza | Tikirikusheesheka omu maizi; ebirikushohora omu bihingwa (nk’eky’okureeberaho, etanoli, asetoni, benzeni, toluini, na etayiri aseteiti) |
| Enshonga y'omushana | 227 °C (ekikopo ekikingire) |
| Okutegyeka | Okuguma ahansi y’obutagatsi n’okugyemeserezibwa okwa butoosha; okuhurira gye omushana gwa ultraviolet (UV) (nigubaasa kusheenya nari kuhindura erangi waaguma nooreeba omushana gwa UV kumara obwire buraingwa); yetantare okukwatagana n’ebintu ebirikureetaho okwitsya kw’amaani, asidi, na alkali . |
Ebikuru ebirikukoresibwa
Bisphenol A n’ekintu kikuru munonga omu kukora polymers z’amaani n’ebintu by’amakorero, n’ebintu ebikuru ebi:
Okukora obuveera bwa polikaboneiti (PC)
Nk’ekintu ekikuru ekirikukoresibwa omu kukozesa obuveera bwa PC, BPA neebaasisa okukora ebintu ebitarikubaasa kusheenyagurika, ebitarikubaasa kukwatwa obutagatsi nk’enju z’ebyoma by’ebyoma (laptops, smartphones), ebicweka by’emotoka (ebikingirizo by’amatara g’omu maisho, ebipande by’omunda), n’ebikwato ebirikukwata aha by’okurya (ebitebeekanisiibwe ahabw’okwerinda omu bicweka ebingi).
Okuteerana kwa epokisi resini
Nikikozesibwa kuhanga epoxy resins z‘okujwara (nk‘eky‘okureeberaho, ebikwato by‘omunda by‘ebikopo, ebikwato by‘amakorero ebirikurwanisa okusheenya), ebikwato by‘okuhamya (ebikwato by‘okuhamya eby‘obuhangwa eby‘amaani maingi eby‘okukoresa omu by‘enyonyi n‘okwombeka), n‘ebintu by‘okuzibira amashanyarazi (ebipande by‘okutaho amashanyarazi, ebikwato by‘okutaho amashanyarazi).
Ebindi ebirikukoresibwa omu makorero
Ebintu ebikuru eby’okukoresa omu bipande bya polyether (ebirikukoresibwa omu bipande bya polyurethane).
Ekirikwongyera omu biveera, ebirikuzibira omuriro, n’ebirikuhamya UV ahabw’ebintu bya polymer.
Omugati omu kuhanga emibazi y‘omutaano (nk‘eky‘okureeberaho, ebirikurwanisa obukooko, ebirikujwara erangi).
Emiringo y'omutindo
Ebintu byaitu ebya Bisphenol A nibikuratira emitindo y’ensi yoona ey’amakorero n’obukuumi, n’eby’okureeberaho by’obuyonjo n’okurinda obutashemeire nk’oku biri ahaifo:
| Indekisi | Ekitiinisa ky'amakorero (eky'omutaano) | Ekipimo ky'okukyebera (Obushemeire bw'ahaiguru) |
|---|---|---|
| Obushemeire (HPLC) | ≥ 99.5% | ≥ 99.8% |
| Obutagatsi oburimu | ≤ 0.1% | ≤ 0.05% |
| Ebirimu eiju | ≤ 0.01% | ≤ 0.005% |
| Obutafaari bw'ebyoma ebiremeire (Pb, Cd, Hg) | ≤ 10 obucweka | ≤ 1 ppm |
| Ebisigaireho bya Phenol | ≤ 0.2% | ≤ 0.05% |
Ebihandiiko ebitebeekanisiibwe biriho ahabw‘ebyetengo by‘amakorero eby‘omutaano (nk‘eky‘okureeberaho, emiringo y‘obukooko bukye ey‘okukora ebintu ebirikukwata aha by‘okurya).
Ebiragiro by'okubiika n'okukwaata
Okureeba ngu ebintu byagumaho kandi byakora gye, kuratira ebirikwetengyesa omu kubiika n’okubikwata:
Embeera z'okubiikamu
Ebirikuba biriho: Biika omu mwanya ogurikwombeka kandi ogwomire ahari 15–25 °C; yetantare obutagatsi bwingi (>30 °C) nari okufuka (
Omushana: Koresa ebikwato ebitarikureebeka gye (nk‘eky‘okureeberaho, obucupa bw‘endabirwamu bwa brown, ebidomora bya HDPE eby‘obuveera ebiine oburinzi bwa UV) okuzibira okusheenyagurika okurikureetwaho UV.
Obutagatsi: Kuguma oine obutagatsi oburikwingana
Ebyetaago by'okukingaho
Reka ebidomora bikingire gye bwanyima ya buri kukozesa okuzibira okunywa obutagatsi n’okushiisha. Yetantare okukoresa emiringo y‘okukingaho ey‘akaire kakye (nk‘okuzingira omu pulasitiki) erikubaasa kureetera okujanjaara kw‘endwara.
Okwerinda
Jwaara eby‘okwerinda (PPE): Ekijwaro ky‘okukinga omucuucu, giraavu ezitarikubaasa kukwatwa emibazi, n‘ebijwaro by‘okwerinda waaba nookwata (na munonga aha miringo y‘obucupa/obujuma).
Okutaho omuyaga: Reeba ngu omuyaga gwaza gye omu myanya y‘okubiikamu n‘okukwatiraho okwetantara enfuuzi nari omuyaga.
Okukora aha bisheeshekire: Yozya ebisheeshekire n‘ebintu ebitarikukora (eitaka ry‘ebishaka, activated carbon); okusheenya kasasiro kurugiirira aha biragiro by‘omu kicweka eby‘emibazi y‘akabi.
Okukuratira ebiragiro
Obuzibu bw‘ensi yoona: Nibukuratira ebiragiro bya EU REACH (Annex XVII) ebirikuzibira BPA omu bintu ebirikukwata aha by‘okurya (nk‘eky‘okureeberaho, okuzibirwa omu bicupa by‘okuriisa abaana abato).
US FDA: Nikihikiiriza ebiragiro bya FDA eby’okukoresa BPA omu bikwato ebirikukwata aha by’okurya n’ebiveera (21 CFR 175.300).
Emiringo ya China: Nikikuratira GB 4806.6 (emitindo y’obukuumi bw’ebipande by’ebiveera ebirikukwata aha by’okurya).
Okushemba & Amagara g'okubiika
Ebintu by’okupakiramu:
Omutindo gw‘amakorero: enshaho z‘ebiveera za HDPE eza kiro 25 (ezirimu ebipande by‘omunda ebya polyethylene) nari ebidongo by‘ebihimba bya kiro 500 (ebirimu ebipande bya aluminiyamu).
Ekicweka ky‘okukoresa: Ecupa z‘endabirwamu z‘erangi ya amber eza kiro 1 (ezikingirwe n‘enkofiira ezirimu Teflon).
Obwire bw’okubiika: ameezi 24 kuruga aha izooba eri byakozirwemu (waaba noobiika omu kukuratira embeera ezi aharuguru, batakingirwe).
Foomu y‘okukyebera omutindo gwa Bisphenol A .
| Okushwijuma | Akabundi | Okushoborora | Kurugamu | Omuringo gw'okukyebera |
| Enshushana | / | Okweera nk’obujuma nari nk’ebicupuri, Hatariho obukooko bw’ebyoma | Obujuma oburikwera, Hatariho oburofa bw'ebyoma | GB/T 28113-2011 |
| Bisfenoli A | Omunda/% | ≥99.85 | 99.925 | GB/T 28113-2011 |
| Fenoli | Omunda/% | ≤0.005 | 0.001 | GB/T 28113-2011 |
| 2,4-Ekishushani | Omunda/% | ≤0.050 | 0.01 | GB/T 28113-2011 |
| Enshonga y'ekibiriiti | °C | ≥156.6 | 157.2 | GB/T 28113-2011 |
| Erangi eshazire | Erangi, Pt-Co (ekicweka kya Hazen) | ≤20 | 10 | GB/T 28113-2011 |
| Okushoboorora Chroma | Erangi, Pt-Co (ekicweka kya Hazen) | / | 5 | GB/T 28113-2011 |
| Omutondo | Omunda/% | ≤0.08 | 0.02 | GB/T 6283-2008 |