Iphepha leeNkcazelo zeMveliso zeBisphenol A/BPA Bisphenol A (BPA)
Isishwankathelo seMveliso
Isishwankathelo seMveliso
Igama leMveliso: iBisphenol A (Isifinyezo: BPA)
Ifomula yeKhemikhali: C₁₅H₁₆O₂
Inombolo ye-CAS: 80-05-7
Inombolo ye-EINECS: 201-245-8
Udidi lweMveliso: Iikhemikhali ze-oleochemicals; Iikhompawundi ze-Organic Synthetic
Inkangeleko: Iikristale ezimhlophe ezifana nenaliti okanye umgubo omhlophe ocolekileyo (udidi lwemizi-mveliso lunokubonakala njengezinto eziqinileyo zegranular)
Iipropati zeMvelo nezeKhemikhali
| Ipropati | Inkcazo |
|---|---|
| Ubunzima beMolekyuli | 228.29 g/mol |
| Indawo yokunyibilika | 158–159 °C (316–318 °F) |
| Indawo yokubilisa | 220 °C (428 °F) kwi-4 mmHg (imeko ye-vacuum) |
| Uxinano | 1.195 g/cm³ (25 °C) |
| Ukunyibilika | Ayinyibiliki emanzini; iyanyibilika kwizinyibilikisi zendalo (umz., i-ethanol, i-acetone, i-benzene, i-toluene, kunye ne-ethyl acetate) |
| Indawo yokuflasha | 227 °C (ikomityi evaliweyo) |
| Uzinzo | Izinzile phantsi kobushushu obuqhelekileyo kunye noxinzelelo; inovelwano kukukhanya kwe-ultraviolet (UV) (inokuwohloka okanye itshintshe umbala xa ichaphazeleka yi-UV ixesha elide); kuphephe ukudibana ne-oxidizers ezinamandla, ii-asidi, kunye ne-alkalis |
Izicelo eziphambili
I-Bisphenol A yindawo ebalulekileyo ekuvelisweni kweepolymers ezisebenza kakuhle kunye nezixhobo zoshishino, kwaye ezi ndawo zilandelayo zesicelo:
Imveliso yePlastiki yePolycarbonate (PC)
Njengezinto eziphambili zeplastiki yePC, i-BPA ivumela ukwenziwa kweemveliso ezingaqhekekiyo nezimelana nobushushu ezifana nee-housing zezixhobo ze-elektroniki (iilaptop, ii-smartphone), izinto zeemoto (izigqubuthelo zezibane zentloko, iiphaneli zangaphakathi), kunye nezikhongozeli zokutya (ezilawulwa ukhuseleko kwiindawo ezininzi).
Ukwenziwa kwe-Epoxy Resin
Isetyenziselwa ukuvelisa ii-epoxy resins zokugquma (umz., ii-linings zangaphakathi zeetini, ii-industrial anti-corrosion coating), ii-adhesive (ii-adhesive structure adhesive ezinamandla aphezulu ze-aerospace kunye nolwakhiwo), kunye nezixhobo zombane zokugquma (iibhodi zesekethe, ii-transformer windings).
Ezinye iindlela zokusetyenziswa kwemizi-mveliso
Izinto eziluhlaza zepolyether polyols (ezisetyenziswa kwi-polyurethane foams).
Isongezelelo kwiiplastiki, izinto ezithintela ilangatye, kunye nezinto eziqinisa i-UV kwizixhobo zepolymer.
Iphakathi ekuhlanganisweni kweekhemikhali ezikhethekileyo (umz., ii-antioxidants, iidayi).
Imigangatho yoMgangatho
Iimveliso zethu zeBisphenol A ziyahambelana nemigangatho yezoshishino neyokhuseleko yehlabathi, kunye neempawu eziqhelekileyo zococeko kunye nolawulo lokungcola ngolu hlobo lulandelayo:
| Isalathiso | Ibanga lezeMveliso (eliQhelekileyo) | Ibanga leReagent (Ucoceko Oluphezulu) |
|---|---|---|
| Ubumsulwa (HPLC) | ≥ 99.5% | ≥ 99.8% |
| Umxholo wobumanzi | ≤ 0.1% | ≤ 0.05% |
| Umxholo wothuthu | ≤ 0.01% | ≤ 0.005% |
| Ukungcola kwesinyithi esinzima (Pb, Cd, Hg) | ≤ 10 ppm | ≤ 1 ppm |
| Intsalela yePhenol | ≤ 0.2% | ≤ 0.05% |
Iinkcukacha ezenzelwe wena ziyafumaneka kwiimfuno ezithile zoshishino (umz., amanqanaba aphantsi okungcolisa ukuvelisa izinto zokutya kunye nokunxibelelana).
Izikhokelo Zokugcina Nokuphatha
Ukuqinisekisa uzinzo lwemveliso kunye nokhuseleko lokusebenza, landela ezi mfuno zokugcina nokuphatha:
Iimeko Zokugcina
Ubushushu: Gcina kwindawo epholileyo neyomileyo kwi-15–25 °C; kuphephe ubushushu obugqithisileyo (>30 °C) okanye ukubanda (
Ukukhanya: Sebenzisa izikhongozeli ezingacacanga (umz., iibhotile zeglasi ezimdaka, iidrama zeplastiki zeHDPE ezikhuselwe yi-UV) ukuthintela ukubola okubangelwa yi-UV.
Umswakama: Gcina umswakama ongaphantsi kwama-60%; yongeza izinto zokucoca (ijeli ye-silica, i-calcium chloride engamanzi) kwizikhongozeli ukuze ungabhidli.
Iimfuneko zokutywina
Gcina izikhongozeli zivalwe ngokuqinileyo emva kokusetyenziswa ngakunye ukuthintela ukufunxwa komswakama kunye nongcoliseko. Kuphephe ukusebenzisa iindlela zokuvala okwethutyana (umz., ukusonga ngeplastiki) ezinokubangela ungcoliseko olunqamlezileyo.
Amanyathelo okhuseleko
Nxiba izixhobo zokuzikhusela zomntu (PPE): Imaski yothuli, iiglavu ezimelana neekhemikhali, kunye neeglasi zokhuseleko xa uphatha (ingakumbi kwiifom zomgubo/iigranular).
Umoya ongenisayo: Qinisekisa ukuba umoya uhamba kakuhle kwiindawo zokugcina nokuphatha ukuze kuthintelwe ukuqokelelana kothuli okanye umphunga.
Ukuphatha Ukuchitheka: Coca okuchithekileyo ngezifunxi ezingangenisi manzi (i-diatomaceous earth, i-activated carbon); lahla inkunkuma ngokuhambelana nemigaqo yasekuhlaleni yeekhemikhali eziyingozi.
Ukuthobela imithetho
Imiqathango yeHlabathi: Ithobela imiqathango ye-EU REACH Regulation (Annex XVII) kwi-BPA kwizixhobo zokunxibelelana nokutya (umz., ezingavumelekanga kwiibhotile zokutyisa iintsana).
I-US FDA: Ihlangabezana nezikhokelo ze-FDA zokusetyenziswa kwe-BPA kwiingubo zokudibanisa ukutya kunye neeplastiki (21 CFR 175.300).
Imigangatho yaseTshayina: Ihambelana ne-GB 4806.6 (imigangatho yokhuseleko kwiiresini zeplastiki ezidityaniswe nokutya).
Ukupakisha kunye nexesha lokugcinwa kwishelufu
Iindlela zokuPakisha:
Udidi lweMizi-mveliso: Iingxowa zeplastiki ze-HDPE ezingama-25 kg (ezinee-polyethylene zangaphakathi) okanye iidrama zefayibha ezingama-500 kg (ezigqunywe ngefoyile ye-aluminium).
Udidi lweReagent: Iibhotile zeglasi ze-amber eziyi-1 kg (zitywinwe ngee-caps ezine-Teflon).
Ubomi Beshelufu: Iinyanga ezingama-24 ukusukela kumhla wokuveliswa (xa igcinwe ngokuhambelana nemiqathango engasentla, ingavulwanga).
Ifomu yoHlolo loMgangatho weBisphenol A
| Uhlalutyo | Iyunithi | Inkcazo | Isiphumo | Indlela yoVavanyo |
| Inkangeleko | / | I-granular emhlophe okanye eqhekekileyo, Ngaphandle kokungcola koomatshini | I-granular emhlophe, Ngaphandle kokungcola koomatshini | GB/T 28113-2011 |
| IBisphenol A | Ngaphakathi/% | ≥99.85 | 99.925 | GB/T 28113-2011 |
| I-Phenol | Ngaphakathi/% | ≤0.005 | 0.001 | GB/T 28113-2011 |
| 2,4-Isomer | Ngaphakathi/% | ≤0.050 | 0.01 | GB/T 28113-2011 |
| Inqaku leCrystalline | °C | ≥156.6 | 157.2 | GB/T 28113-2011 |
| I-Chroma Enyibilikisiweyo | Umbala, iPt-Co (iYunithi yeHazen) | ≤20 | 10 | GB/T 28113-2011 |
| Isisombululo seChroma | Umbala, iPt-Co (iYunithi yeHazen) | / | 5 | GB/T 28113-2011 |
| Ukufuma | Ngaphakathi/% | ≤0.08 | 0.02 | GB/T 6283-2008 |