Iimveliso
IAdipic Acid-esetyenziselwa imichiza/organic synthesis/medicine/lubricant
Inkcazelo emfutshane:
Inombolo yeCAS:124-04-9
Isiteketiso sesiTshayina:iasidi enamafutha
Igama lesiNgesi:Adipic acid.
Ifomula yolwakhiwo:
Usebenzisa
I-asidi ye-adipic inokungena kwi-reactions yokwenza ityuwa, i-esterification reactions, i-amidation reactions, njl.I-Adipic acid yi-asidi ye-dicarboxylic yokubaluleka okukhulu kwezoshishino.Idlala indima ebalulekileyo kwimveliso yeekhemikhali, kwishishini le-organic synthesis, iyeza, kunye nemveliso ye-lubricant.Iasidi yeAdipic ikwayinto ekrwada yeyeza, ukuhlanjululwa kwegwele, amayeza okubulala izitshabalalisi, izinto zokuncamathelisa, izikhumba zokwenziwa, iidayi zokwenziwa kunye neziqholo.
Iasidi yeAdipic isetyenziswa kakhulu njengemathiriyeli ekrwada yenayiloni 66 kunye neeplastiki zobunjineli.Ikwasetyenziselwa ukuveliswa kweemveliso ezahlukeneyo ze-ester.Ikwasetyenziswa njengemathiriyeli ekrwada ye-polyurethane elastomers nanjenge-acidifier yokutya okwahlukeneyo kunye neziselo.Ngaphezulu kwe-citric acid kunye ne-tartaric acid.
Iasidi yeAdipic ikwayinto ekrwada yeyeza, ukuhlanjululwa kwegwele, amayeza okubulala izitshabalalisi, izinto zokuncamathelisa, izikhumba zokwenziwa, iidayi zokwenziwa kunye neziqholo.
I-asidi ye-Adipic inencasa emuncu ethambileyo nehlala ixesha elide, kwaye ixabiso le-pH litshintsha kancinci kuluhlu olukhulu loxinaniso.Kungcono ukulawulwa kwexabiso le-pH.I-GB2760-2007 ichaza ukuba inani eliphezulu lokusetyenziswa kwale mveliso kwiziselo eziqinileyo ngu-0.01g/kg;ingasetyenziselwa ijeli kunye nomgubo wejeli, kwaye ubuninzi bokusetyenziswa kwejeli yi-0.01g / kg;xa isetyenziselwa i-jelly powder, inokucinezelwa Lungisa i-multiple ukwandisa ukusetyenziswa.
I-Adipic acid okanye i-hexanedioic acid yi-organic compound kunye nefomula
(CH2)4(COOH)2.Ukususela kumbono wezoshishino, i-acid ye-dicarboxylic ibaluleke kakhulu: malunga ne-2.5 yeebhiliyoni zeekhilogram ze-crystalline powder ezimhlophe ziveliswa ngonyaka, ngokukodwa njenge-precursor yokuveliswa kwe-nylon.Iasidi yeAdipic ngenye indlela ayifane yenzeke kwindalo, kodwa yaziwa ngokuba yenziwe inombolo ye-E355 yokongeza ukutya.
Malunga ne-60% ye-2.5 yeebhiliyoni zeekhilogram ze-adipic acid eveliswa ngonyaka isetyenziswa njenge-monomer yokuveliswa kwe-nayiloni nge-polycondensation reaction kunye ne-hexamethylene diamine eyenza inayiloni 66. Ezinye izicelo eziphambili zibandakanya iipolima;yi-monomer yokuveliswa kwe-polyurethane kunye nee-esters zayo zeplastiki, ngakumbi kwi-PVC.
Isicelo
Iasidi yeAdipic isetyenziswa kakhulu njengemathiriyeli ekrwada yenayiloni 66 kunye neeplastiki zobunjineli.Ikwasetyenziselwa ukuveliswa kweemveliso ezahlukeneyo ze-ester.Ikwasetyenziswa njengemathiriyeli ekrwada ye-polyurethane elastomers nanjenge-acidifier yokutya okwahlukeneyo kunye neziselo.Ngaphezulu kwe-citric acid kunye ne-tartaric acid.
Iasidi yeAdipic ikwayinto ekrwada yeyeza, ukuhlanjululwa kwegwele, amayeza okubulala izitshabalalisi, izinto zokuncamathelisa, izikhumba zokwenziwa, iidayi zokwenziwa kunye neziqholo.
I-asidi ye-Adipic inencasa emuncu ethambileyo nehlala ixesha elide, kwaye ixabiso le-pH litshintsha kancinci kuluhlu olukhulu loxinaniso.Kungcono ukulawulwa kwexabiso le-pH.I-GB2760-2007 ichaza ukuba inani eliphezulu lokusetyenziswa kwale mveliso kwiziselo eziqinileyo ngu-0.01g/kg;ingasetyenziselwa ijeli kunye nomgubo wejeli, kwaye ubuninzi bokusetyenziswa kwejeli yi-0.01g / kg;xa isetyenziselwa i-jelly powder, inokucinezelwa Lungisa i-multiple ukwandisa ukusetyenziswa.
Kwezamayeza:
Iasidi ye-Adipic iye yadityaniswa kwi-controlled-release formulation matrix tablets ukufumana ukukhululwa okuzimeleyo kwe-pH kuwo omabini amachiza asisiseko abuthathaka kunye ne-acidic ebuthathaka.Ikwafakwe kwi-polymeric coating yeenkqubo ze-hydrophilic monolithic ukulungelelanisa i-intragel pH, okukhokelela ekukhutshweni kwe-zero-odolo yechiza le-hydrophilic.Ukuchithwa kwi-intestinal pH ye-enteric polymer shellac kuye kwabikwa ukuba kuphuculwe xa i-adipic acid isetyenziswe njenge-pore-forming agent ngaphandle kokuchaphazela ukukhululwa kwimidiya ye-acidic.Ezinye iifomyula ezilawulwayo ezikhutshweyo zibandakanya i-adipic acid ngenjongo yokufumana iprofayili yokukhutshwa emva kwexesha.
Ekutyeni:
Ixabiso elincinci kodwa elibalulekileyo le-adipic acid lisetyenziswa njengesithako sokutya njengencasa kunye ne-gelling aid.Isetyenziswa kwezinye calcium carbonate antacids ukuzenza tart.Njenge-acidulant kwi-baking powders, ikhusela iimpawu ezingathandekiyo ze-hygroscopic ze-tartaric acid.I-asidi ye-Adipic, enqabileyo kwindalo, yenzeka ngokwemvelo kwi-beet, kodwa oku akusiyo umthombo wezoqoqosho kurhwebo xa kuthelekiswa nokuhlanganiswa kwezoshishino.
Ukhathalelo lokhuseleko:
Iasidi yeAdipic, njengoninzi lweeasidi ze-carboxylic, ilusu oluphakathi olucaphukisayo.Inobuthi obuncinci, kunye nedosi ebulalayo ephakathi kwe-3600 mg / kg yokungeniswa komlomo ngamagundane.
Imiba yokusingqongileyo:
Ukuveliswa kwe-adipic acid kudibaniswa nokukhutshwa kwe-N2O, enamandla
igesi yegreenhouse kunye nonobangela wokuncipha kwe-ozone yestratospheric.Kwi-adipic acid abavelisi iDuPont kunye neRhodia (ngoku i-Invista kunye neSolvay, ngokulandelanayo), iinkqubo ziye zaphunyezwa ukuguqula i-nitrous oxide kwiimveliso ezingenabungozi:
2 N2O → 2 N2 + O2