Bisphenol A/BPA Bisphenol A (BPA) Olupapula olukwata ku bikozesebwa
Okulaba Ebintu Ebikolebwa
Okulambika kw'ebintu
Erinnya ly’ekintu: Bisphenol A (Ekifupi: BPA)
Ensengekera y’eddagala: C15H12O2
Ennamba ya CAS: 80-05-7
Ennamba ya EINECS: 201-245-8
Ekika ky’ebintu: Oleochemicals; Ebirungo ebikolebwa mu butonde
Endabika: Ebiwujjo ebyeru ebiringa empiso oba butto omweru omulungi (omutendera gw’amakolero guyinza okulabika ng’ebintu ebikalu ebiringa obutundutundu)
Ebintu eby'omubiri & eby'eddagala
| Eby'obwa nannyini | Okunnyonnyola |
|---|---|
| Obuzito bwa Molekyulu | 228.29 g/mol |
| Ekifo ky’okusaanuuka | 158–159 °C (316–318 °F) mu buwanvu bw’ensi. |
| Ekifo ky’okufumba | 220 °C (428 °F) ku mmHg 4 (embeera y’obuziba) . |
| Obuzito | 1.195 g/sentimita (25 °C) . |
| Okusaanuuka | Tesaanuuka mu mazzi; esaanuuka mu biwunyiriza ebiramu (okugeza, ethanol, acetone, benzene, toluene, ne ethyl acetate) . |
| Ekifo eky’okumasamasa | 227 °C (ekikopo ekiggaddwa) . |
| Okutebenkera | Enywevu wansi w’ebbugumu ne puleesa eya bulijjo; ewulikika ku kitangaala kya ultraviolet (UV) (eyinza okuvunda oba okukyuka langi ng’omuntu amaze ebbanga eddene ng’akwatibwa UV); weewale okukwatagana n’ebirungo ebiziyiza okisayidi, asidi, ne alkali ez’amaanyi |
Ebikozesebwa Ebikulu
Bisphenol A kye kintu ekikulu eky’omu makkati mu kukola ebiwujjo ebikola obulungi n’ebintu eby’amakolero, nga kirimu emirimu gino emikulu egy’okukozesa:
Okukola obuveera bwa Polycarbonate (PC)
Nga ekintu ekikulu ekisookerwako mu buveera bwa PC, BPA esobozesa okukola ebintu ebigumira okumenya, ebigumira ebbugumu nga ebiyumba by’ebyuma eby’amasannyalaze (laptops, smartphones), ebitundu by’emmotoka (ebibikka amataala g’omu maaso, ebipande by’omunda), n’ebintu ebikwatagana n’emmere (ebifugibwa olw’obukuumi mu bitundu ebisinga obungi).
Okusengejja Epoxy Resin
Ekozesebwa okukola epoxy resins for coatings (okugeza, can inner linings, industrial anti-corrosion coatings), adhesives (high-strength structural adhesives for aerospace and construction), n’ebintu ebiziyiza amasannyalaze (circuit boards, transformer windings).
Ebirala Ebikozesebwa mu Makolero
Ebintu ebisookerwako ebya polyether polyols (ebikozesebwa mu polyurethane foams).
Ekigatta mu biveera, ebiziyiza ennimi z’omuliro, n’ebinyweza UV ku bintu bya polimeeri
Eky’omu makkati mu kukola eddagala ery’enjawulo (okugeza, antioxidants, dyestuffs).
Omutindo gw'omutindo
Ebintu byaffe ebya Bisphenol A bituukana n’omutindo gw’amakolero n’obukuumi mu nsi yonna, nga biriko ebiraga obulongoofu n’obucaafu obumanyiddwa nga bwe buti:
| Index | Ekigero ky’amakolero (Ekya bulijjo) . | Reagent Grade (Obulongoofu bwa waggulu) . |
|---|---|---|
| Obulongoofu (HPLC) . | ≥ 99.5% . | ≥ 99.8% . |
| Ebirimu Obunnyogovu | ≤ 0.1% . | ≤ 0.05% . |
| Ebirimu evvu | ≤ 0.01% . | ≤ 0.005% . |
| Obucaafu bw’ebyuma ebizito (Pb, Cd, Hg) . | ≤ 10 ppm | ≤ 1 ppm |
| Ebisigadde bya Phenol | ≤ 0.2% . | ≤ 0.05% . |
Ebiragiro ebikoleddwa ku mutindo biriwo ku byetaago by’amakolero ebitongole (okugeza, ebika ebitaliimu bucaafu obutono eby’okukola ebintu ebikwatagana n’emmere).
Enkola y'okutereka n'okukwata
Okukakasa nti ebintu binywevu n’obukuumi mu nkola, goberera ebisaanyizo bino eby’okutereka n’okubikwata:
Embeera z'okutereka
Ebbugumu: Teeka mu mbeera ennyogovu era enkalu ku 15–25 °C; weewale ebbugumu erisukkiridde (>30 °C) oba okutonnya (
Ekitangaala: Kozesa ebibya ebitali bitangaavu (okugeza, eccupa z’endabirwamu eza kitaka, endongo z’obuveera eza HDPE ezirina obukuumi bwa UV) okuziyiza okuvunda okuva mu UV
Obunnyogovu: Kuuma obunnyogovu obw’enjawulo
Ebyetaago by'okusiba
Ebibya bikuume nga bisibiddwa bulungi buli lw’omala okubikozesa okuziyiza obunnyogovu okuyingira n’okufuuka obucaafu. Weewale okukozesa enkola z’okusiba ez’ekiseera (okugeza, okuzinga obuveera) eziyinza okuvaako okusalako obucaafu
Okwegendereza mu by'okwerinda
Yambala ebyuma eby’okwekuuma (PPE): Masiki y’enfuufu, ggalavu ezitayingiramu ddagala, n’endabirwamu ezikuuma ng’okwata (naddala ku ffoomu za pawuda/obutundutundu).
Okuyingiza empewo: Kakasa nti empewo etambula bulungi mu bifo we batereka n’okukwata ebintu okwewala okukuŋŋaanyizibwa kw’enfuufu oba omukka
Enkwata y’okuyiwa: Okwoza ebiyidde n’ebinyiga ebitakola (diatomaceous earth, activated carbon); okusuula kasasiro okusinziira ku mateeka agafuga eddagala ery’obulabe mu kitundu
Okugoberera amateeka
Ebiziyiza mu nsi yonna: Egoberera ebiragiro bya EU REACH Regulation (Annex XVII) ku BPA mu bintu ebikwatagana n’emmere (okugeza, ebiwereddwa mu bucupa bw’okuliisa abaana abawere).
US FDA: Etuukiriza ebiragiro bya FDA ku nkozesa ya BPA mu bizigo ebikwatagana n’emmere n’obuveera (21 CFR 175.300).
Omutindo gwa China: Gugoberera GB 4806.6 (omutindo gw’obukuumi ku biveera ebikwatagana n’emmere).
Okupakinga & Obulamu bw'okutereka
Enkola y’okupakinga:
Ekika ky’amakolero: Ensawo z’obuveera eza HDPE eza kkiro 25 (nga ziriko layini za polyethylene ez’omunda) oba endongo za fiber eza kkiro 500 (eziriko layini ya aluminiyamu).
Ekika kya Reagent: Eccupa z’endabirwamu za amber kkiro emu (zisibiddwako enkoofiira eziriko Teflon-lined).
Obulamu bw’okutereka: Emyezi 24 okuva ku lunaku lwe yafulumizibwa (bwe kiterekeddwa nga kigoberera obukwakkulizo obwo waggulu, nga tegugguddwawo).
Ffoomu y’okukebera omutindo ku Bisphenol A
| Analyte (Ekisengejja). | Omunwe | Okunnyonnyola | Alizaati | Enkola y’okugezesa |
| Endabika | / . | Enjeru granular oba flaky, Temuli bucaafu bwa makanika | White granular, Nga temuli bucaafu bwa makanika | GB/T 28113-2011 |
| Ekirungo kya Bisphenol A | Mu/% | ≥99.85 | 99.925 | GB/T 28113-2011 |
| Phenol | Mu/% | ≤0.005 | 0.001 | GB/T 28113-2011 |
| 2,4-Ekitundu kya Isomer | Mu/% | ≤0.050 | 0.01 | GB/T 28113-2011 |
| Ensonga ya Kiristaayo | °C | ≥156.6 | 157.2 | GB/T 28113-2011 |
| Chroma esaanuuse | Langi, Pt-Co (Ekitundu kya Hazen) . | ≤20 | 10. | GB/T 28113-2011 |
| Ekigonjoola Chroma | Langi, Pt-Co (Ekitundu kya Hazen) . | / . | 5. 5. | GB/T 28113-2011 |
| Amazzi | Mu/% | ≤0.08 | 0.02 | GB/T 6283-2008 |