Bisphenol A/BPA Bisphenol A (BPA) Pepa reZviratidzo zveChigadzirwa
Pfupiso yeChigadzirwa
Pfupiso yeChigadzirwa
Zita reChigadzirwa: Bisphenol A (Chidimbu: BPA)
Fomura yeMakemikari: C₁₅H₁₆O₂
Nhamba yeCAS: 80-05-7
Nhamba yeEINECS: 201-245-8
Rudzi rweChigadzirwa: Oleochemicals; Organic Synthetic Compounds
Kuonekwa: Makristasi machena akafanana netsono kana upfu hwakachena hwakatsetseka (mhando yeindasitiri inogona kuoneka se granular solids)
Zvimiro zveMuviri neMakemikoro
| Pfuma | Tsanangudzo |
|---|---|
| Kurema kweMorekuru | 228.29 g/mol |
| Nzvimbo Yokunyunguduka | 158–159 °C (316–318 °F) |
| Nzvimbo Yokubikira | 220 °C (428 °F) pa4 mmHg (mamiriro evacuum) |
| Kuwanda kwevanhu | 1.195 g/cm³ (25 °C) |
| Kunyunguduka | Hainyungudike mumvura; inonyungudika mune zvinonyungudutsa zve organic (semuenzaniso, ethanol, acetone, benzene, toluene, uye ethyl acetate) |
| Poindi yeFlash | 227 °C (kapu yakavharwa) |
| Kugadzikana | Yakagadzikana pasi pekupisa kwakajairika uye kumanikidzwa; inonzwa chiedza che ultraviolet (UV) (inogona kuora kana kuchinja ruvara kana ikasangana neUV kwenguva refu); dzivisa kusangana ne oxidizers, acids, uye alkalis dzakasimba |
Mapurogiramu Epakati
Bisphenol A inzvimbo yakakosha mukugadzirwa kwemapolymers anoshanda zvakanyanya uye zvinhu zvemaindasitiri, ine minda mikuru yekushandisa inotevera:
Kugadzirwa kwepurasitiki yePolycarbonate (PC)
Sezvo iri chinhu chikuru chepurasitiki yePC, BPA inogonesa kugadzirwa kwezvinhu zvisingaputsike uye zvisingapisi zvakaita semidziyo yemagetsi (malaptop, mafoni), zvikamu zvemotokari (zvivharo zvemwenje, mapaneru emukati), uye midziyo yekudya (inodzorwa kuchengetedza munzvimbo zhinji).
Kugadzirwa kweEpoxy Resin
Inoshandiswa kugadzira maresini epoxy ekuputira (semuenzaniso, machira emukati emagaba, machira ekudzivirira ngura emaindasitiri), machira ekunamatira (machira ekunamatira ane simba guru emuchadenga nekuvaka), uye zvinhu zvemagetsi zvinodzivirira kusvibiswa (mabhodhi edunhu, mawindings etransformer).
Mamwe Mashandisirwo Emaindasitiri
Zvinhu zvisina kugadzirwa zve polyether polyols (zvinoshandiswa mu polyurethane furo).
Zvinowedzerwa muzvigadziriso zvepurasitiki, zvinodzivisa moto, uye zvinosimbisa UV zvezvinhu zvepolymer.
Pakati nepakati mukugadzirwa kwemakemikari akakosha (semuenzaniso, ma antioxidants, dyestuffs).
Maitiro Emhando Yepamusoro
Zvigadzirwa zvedu zveBisphenol A zvinoenderana nezvinodiwa zvepasi rose zvemaindasitiri nezvekuchengetedza, zvine zviratidzo zvekuchena uye kuchena sezvinotevera:
| Index | Giredhi reMaindasitiri (Rakajairika) | Giredhi reReagent (Kuchena Kwakanyanya) |
|---|---|---|
| Kuchena (HPLC) | ≥ 99.5% | ≥ 99.8% |
| Hunyoro | ≤ 0.1% | ≤ 0.05% |
| Zviri Mudota | ≤ 0.01% | ≤ 0.005% |
| Kusvibiswa nesimbi ine simba (Pb, Cd, Hg) | ≤ 10 ppm | ≤ 1 ppm |
| Zvakasara zvePhenol | ≤ 0.2% | ≤ 0.05% |
Zvinodiwa zvakagadzirwa nemaindasitiri (semuenzaniso, magiredhi asina kuchena anoshandiswa pakugadzira zvinhu zvinosangana nechikafu).
Nhungamiro dzeKuchengeta & Kubata
Kuti uve nechokwadi chekuti chigadzirwa chakasimba uye chakachengeteka pakushanda, tevera zvinodiwa zvekuchengetedza nekubata:
Mamiriro Ekuchengetedza
Tembiricha: Chengeta munzvimbo inotonhorera, yakaoma pa15–25 °C; usapisa zvakanyanya (>30 °C) kana kuomesa nechando (
Chiedza: Shandisa midziyo isingaonekwe (semuenzaniso, mabhodhoro egirazi ebrown, madhiramu epurasitiki eHDPE ane dziviriro yeUV) kudzivirira kuora kunokonzerwa neUV.
Hunyoro: Chengetedza hunyoro huri pasi pe60%; isa ma desiccant (silica gel, anhydrous calcium chloride) mumidziyo kuti isacheke.
Zvinodiwa pakuisa chisimbiso
Chengeta midziyo yakavharwa zvakasimba mushure mekushandisa kwega kwega kudzivirira kusvibiswa kwehunyoro. Dzivisa kushandisa nzira dzekuvhara kwenguva pfupi (semuenzaniso, kuputira kwepurasitiki) izvo zvinogona kukonzera kusvibiswa kwemuchina.
Kudzivirira
Pfekai zvinhu zvekudzivirira muviri (PPE): Chifukidziro cheguruva, magirovhosi asingaurayiwi nemakemikari, uye magirazi ekuchengetedza paunenge uchibata (kunyanya ehupfu/granular form).
Kufefetera: Iva nechokwadi chekuti mhepo inoyerera zvakanaka munzvimbo dzekuchengetera nedzekubata kuitira kudzivirira kuungana kweguruva kana utsi.
Kubata Kudururwa Kwemvura: Chenesai marara nekushandisa zvinhu zvisinganyungudike (diatomaceous earth, activated carbon); rasai marara zvichienderana nemitemo yemakemikari ane njodzi munharaunda.
Kutevedzera Mutemo
Zvirambidzo zvePasirose: Zvinotevedzera mitemo yeEU REACH Regulation (Annex XVII) paBPA muzvinhu zvinobata chikafu (semuenzaniso, zvinorambidzwa mumabhodhoro ekudyisa vacheche).
US FDA: Inosangana nemirairo yeFDA yekushandiswa kweBPA mumachira ekubatanidza chikafu uye mapurasitiki (21 CFR 175.300).
Mitemo yeChina: Inoenderana neGB 4806.6 (mitemo yekuchengetedza maresini epurasitiki anosangana nechikafu).
Kurongedza & Hupenyu hweSherufu
Sarudzo dzeKurongedza:
Giredhi reMaindasitiri: Mabhegi epurasitiki eHDPE 25 kg (ane mapurasitiki emukati epolyethylene) kana madhiramu efiber e500 kg (akafukidzwa nefoil yealuminium).
Reagent Grade: Mabhodhoro egirazi e-amber ane 1 kg (akavharwa neTeflon-lined caps).
Hupenyu hweSherufu: Mwedzi makumi maviri nemana kubva pazuva rekugadzirwa (kana yakachengetwa zvichienderana nemamiriro ari pamusoro, isina kuvhurwa).
Fomu reKuongorora Hunhu hweBisphenol A
| Muongorori | Chikamu | Tsanangudzo | Mhedzisiro | Nzira Yekuyedza |
| Chitarisiko | / | Chena granular kana kuti flaked, Pasina tsvina yemakanika | Chena granular, Pasina tsvina yemakanika | GB/T 28113-2011 |
| Bisphenol A | Mukati/% | ≥99.85 | 99.925 | GB/T 28113-2011 |
| Phenol | Mukati/% | ≤0.005 | 0.001 | GB/T 28113-2011 |
| 2,4-Isomeri | Mukati/% | ≤0.050 | 0.01 | GB/T 28113-2011 |
| Nzvimbo yeCrystalline | °C | ≥156.6 | 157.2 | GB/T 28113-2011 |
| Chroma Yakanyungudutswa | Ruvara, Pt-Co (Chikamu cheHazen) | ≤20 | 10 | GB/T 28113-2011 |
| Mhinduro yeChroma | Ruvara, Pt-Co (Chikamu cheHazen) | / | 5 | GB/T 28113-2011 |
| Hunyoro | Mukati/% | ≤0.08 | 0.02 | GB/T 6283-2008 |