Yintoni inombolo yeCAS?
Inombolo ye-CAS, eyaziwa ngokuba yi-Chemical Abstracts Service Number (CAS), yinombolo yokuchonga eyodwa eyabelwe into yekhemikhali yi-US Chemical Abstracts Service (CAS). Into nganye eyaziwayo yeekhemikhali, kubandakanywa izinto, iikhompawundi, imixube, kunye ne-biomolecules, inikwe inombolo ethile ye-CAS. Le nkqubo yamanani isetyenziswa kakhulu kumashishini esayensi yemichiza, amayeza, kunye nemathiriyeli kwaye ijonge ukubonelela ngomgangatho ongaguquguqukiyo wehlabathi wokuchongwa kwezinto zekhemikhali.
Ubume kunye nentsingiselo yeNombolo yeCAS
Inombolo ye-CAS inamanani amathathu kwifomathi "XXX-XX-X". Amadijithi amathathu okuqala linani le-serial, amadijithi amabini aphakathi asetyenziselwa ukujonga, kwaye idijithi yokugqibela yidijithi yokutshekisha. Le nkqubo yamanani yenzelwe ukuqinisekisa ukuba umchiza ngamnye unesazisi esisodwa, ukuthintela ukubhideka ngenxa yegama okanye ulwimi olwahlukileyo. Ngokomzekelo, inombolo ye-CAS yamanzi yi-7732-18-5, kwaye isalathiso sale nombolo sikhomba kwimichiza efanayo kungakhathaliseki ilizwe okanye ishishini.
Ukubaluleka kwamanani e-CAS kunye neendawo zokufaka izicelo
Ukubaluleka kwenombolo yeCAS kubonakaliswa ikakhulu kule miba ilandelayo:

Ukuchongwa kwemichiza yehlabathi: Inombolo ye-CAS ibonelela ngesazisi esisodwa kwihlabathi kwikhemikhali nganye. Ingaba kuncwadi lwenzululwazi, izicelo zelungelo elilodwa lomenzi wechiza, ukuleyibhile imveliso okanye amaphepha edatha yokhuseleko, inombolo ye-CAS isebenza njengomgangatho ofanayo kwaye iqinisekisa ulwazi olungaguqukiyo.

Ulawulo lweeNkcukacha kunye nokuBuyiswa kweeNkcukacha: Ngenxa yoluhlu olubanzi lwezinto zekhemikhali kunye ne-nomenclature yazo eyinkimbinkimbi, iinombolo ze-CAS zenza ukuba ulawulo kunye nokubuyiswa kweenkcukacha zeekhemikhali zisebenze ngakumbi. Abaphandi, iinkampani zeekhemikhali kunye nee-arhente zikarhulumente zinokufikelela ngokukhawuleza nangokuchanekileyo ulwazi malunga neekhemikhali zezinto ngeenombolo ze-CAS.

Ukuthotyelwa kwemigaqo kunye nolawulo lokhuseleko: Kulawulo lweekhemikhali, amanani e-CAS sisixhobo esibalulekileyo sokuqinisekisa ukuthotyelwa kokulawula. Imimiselo emininzi yeekhemikhali zelizwe kunye nezengingqi, ezifana noBhaliso, uVavanyo, ukuGunyanyiswa kunye nokuThintelwa kweMichiza (REACH) kunye noMthetho woLawulo lweMichiza yeToxic (TSCA), ifuna iinombolo ze-CAS ukuqinisekisa ukuba semthethweni kunye nokhuseleko lwezinto zekhemikhali.

Ndiyifumana kwaye ndiyisebenzise njani inombolo ye-CAS?
Iinombolo ze-CAS zivame ukufunyanwa kwiinkcukacha ezikhethekileyo okanye iincwadi zeekhemikhali, ezifana ne-CAS Registry, i-PubChem, i-ChemSpider, njl. Xa usebenzisa inombolo ye-CAS, kubalulekile ukuqinisekisa ukuba inombolo efakiweyo ichanekile, njengoko nokuba idijithi enye impazamo ingabangela ukuba ikhemikhali ehluke ngokupheleleyo ifunyenwe. Amanani e-CAS asetyenziswa ngokuqhelekileyo kwimveliso yeekhemikhali kunye neenkqubo zophando zokuthengwa, ukulawula umgangatho, kunye nokulungiswa nokulawulwa kwamaphepha edatha yokhuseleko.
Isishwankathelo
Njengenkqubo yokuchonga imichiza esetyenziswa kwihlabathi jikelele, inombolo ye-CAS iphucula kakhulu ukusebenza kunye nokuchaneka kokufunyanwa kolwazi lweekhemikhali. Amanani e-CAS adlala indima engenakuthathelwa indawo kwishishini lemichiza, nokuba kuphando kunye nemveliso, okanye kuthotyelo lolawulo kunye nolawulo lokhuseleko. Ke ngoko, ukuqonda nokusebenzisa ngokuchanekileyo amanani e-CAS kubalulekile kubasebenzi beshishini lemichiza.