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I-N,N-Dimethylaniline DMA CAS 121-69-7
Ikwaziwa nangokuthi yi-dimethylaniline, ulwelo olunamafutha olungenambala ukuya koluphuzi, ivumba elicaphukisayo, emoyeni okanye phantsi kwelanga kulula ukusebenzisa i-oxidation. Uxinano oluhambelanayo (20℃/4℃) 0.9555, iqondo lokukhenkceza 2.0℃, iqondo lokubila 193℃, iqondo lokukhanya (ukuvula) 77℃, iqondo lokutsha 317℃, i-viscosity (25℃) 1.528 MP...Funda ngokugqithisileyo -
Ioyile yaseSaudi ihlaselwa kwakhona! I-crude ijonge kwi-$70!
Elinye igagasi alizange lilinganise elinye linyukile. Iindaba zokuncitshiswa kwe-OPEC kunye nokuqhushumba kwe-Iraq azikapheli, indawo ephambili yeoyile yaseSaudi ichaphazeleke kwakhona! Ixabiso elithe ngqo le-$70! Ingxaki yokuvuselelwa kweDachang ebekwe kutshanje, amaxabiso emarike yezinto eziluhlaza ayilunganga ngokupheleleyo! Emva kokuba i-Iraq ihlaselwe, iSaudi Arabia ...Funda ngokugqithisileyo -
Ukusetyenziswa kwe-2-naphthol
I-2-Naphthol, ekwaziwa ngokuba yi-β-naphthol, i-acetonaphthol okanye i-2-hydroxynaphthalene, yi-white shiny flakes okanye i-white powder. Ubuninzi yi-1.28g/cm3. I-melting point yi-123~124℃, i-billing point yi-285~286℃, kwaye i-flash point yi-161℃. Inokutsha, kwaye umbala uya kuba mnyama emva kwexesha elide...Funda ngokugqithisileyo -
nceda ukholelwe ukuba singabachwephesha kwaye umzi-mveliso wethu ubuthathaka kakhulu
Ukugqibelela kufinyelelwa ngamanqanaba acothayo; kufuna ixesha. Ihlabathi ebelimele lifike, ebelimele lihambe bubomi, njengeenkumbulo zezizukulwana ezininzi, uMalume uDahl emka ngonaphakade, umbono wobukrelekrele bakhe, umbono wobukrelekrele bakhe, ekukhanyeni nasethunzini uya kuba mncinci kwihlabathi elitolikwayo...Funda ngokugqithisileyo -
Ukunyuka kwamaxabiso? Amaxabiso ayanda! Ukukhutshwa kwamanzi amakhulu kwe-1.9 trillion! Izinto ezisetyenzisiweyo zekhemikhali nazo ziyavela kwimarike! Ufuna! Rose!
Amaxabiso ayanyuka! Imali ayisekho xabiso! IMelika ikhokela ihlabathi ekukhululeni amanzi! Amaxabiso eemveliso ayanyuka! Amaxabiso ezinto ezisetyenzisiweyo anyuke kakhulu, nto leyo enyanzelisa iimpahla zabathengi ezisezantsi ukuba zinyuke ngokukhawuleza ngexabiso! Ekugqibeleni, umthengi uyahlawula! Ingaba ibhegi yakho ilungile? Iphambene kakhulu! I-US iyakhululwa...Funda ngokugqithisileyo -
Phuma apha uqaphele! Imali yelizwe iwele, amaxabiso anyukile, ukuchaswa rhoqo kokulahla inkunkuma!
ITurkey sele ithwaxwe kukuwohloka kwemali kunye nokunyuka kwamaxabiso kwiminyaka emibini edlulileyo. Ngo-2020, ubhubhane omtsha wabangela iTurkey enye ingxaki, wayityhalela kwingxaki yokudodobala koqoqosho. Imali yaseTurkey, i-lira, iyawohloka ngesantya esiphezulu kwaye imali yayo yotshintshiselwano lwangaphandle iyehla...Funda ngokugqithisileyo -
Ifektri yomthombo waseTshayina inika iikhemikhali ezintle: i-N, i-N-dimethyl-p-toluidine
Iimveliso ezilungileyo zifuna ukwaziswa ngomlomo Ngoku, inkampani yethu igxile ekuqaliseni ezi mveliso zi-8 zibalaseleyo. Zisetyenziswa kakhulu kwiimveliso zamayeza kunye needayi, ukuba ufuna ukunxibelelana nam nangaliphi na ixesha ukuze ufumane ixabiso elihle. Ewe, ukuba umhlobo wakho okanye nabani na omaziyo unesidingo seemveliso zethu kwaye ucebisa...Funda ngokugqithisileyo -
Ukunyuka kwexabiso lesondo okungalawulekiyo! Amaxabiso amaninzi eekhemikhali anyuka ngokuthe nkqo! Amanani eempahla ayanda!
Ngosuku lokuqala emva kweholide, ixabiso lezinto ezisetyenzisiweyo zeekhemikhali lanyuka. Abanye abantu bathi, ungakhathazeki, ndifuna ukulinda, Linda ukuza, liguqule ixabiso izihlandlo ezininzi! Ngelithandabuzayo linyuke ngekhulu, Kwimarike yanamhlanje yeekhemikhali, iTrance ayisiyonto ihlekisayo, yinyani! Ayilawuleki...Funda ngokugqithisileyo -
Kulindeleke ukuba umkhwa oqinileyo kwimarike yeekhemikhali uqhubeke! U-Athena
Ukuvalwa kweendawo zokucocisa izinto ezininzi! Ioyile ekrwada inyuka iye kwinqanaba eliphezulu leenyanga ezili-13! Njengoko imozulu ebandayo isasazeka iye kumazantsi eTexas, lonke ilizwe laseTexas liye lanyanzeleka ukuba liqalise ukucima umbane ngokujikeleza ukuze kuncitshiswe imfuno kwaye kuthintelwe "ukucima kombane okuyingozi" okuhlala ixesha elide. Ukwanda...Funda ngokugqithisileyo -
Ukukhawuleza nokulawula iidayi ezahlukeneyo zelaphu
. Ukuqina kwelaphu okuphambili okuthandathu 1. Ukuqina kokukhanya Ukuqina kokukhanya kubhekisa kwinqanaba lokutshintsha kombala welaphu elinemibala lilanga. Indlela yokuvavanya inokuba kukuvezwa elangeni okanye ukuvezwa komatshini emini. Ukuphakama kwesampulu emva kokuvezwa kuthelekiswa nesampulu yombala eqhelekileyo. Iyahluka...Funda ngokugqithisileyo -
Zingaphi iibhokisi ezilahlekileyo? Isikhongozeli asisekho kumgca wemveliso kwaye sithunyelwa ngqo kwisiphelo sendlela!
Isikhongozeli "ibhokisi kunzima ukuyifumana", kangangokuba amashishini okuvelisa izikhongozeli aqalise ukukhula okukhulu, amanye amashishini ezikhongozeli ngexesha leMnyhadala yaseNtwasahlobo nawo ayanyusa imveliso ukuze afikelele kwiiodolo. Ukunikezelwa kwezikhongozeli kudlula imfuno Abavelisi bayaqhubeka nokuqesha...Funda ngokugqithisileyo -
I-Trimethylol amino methane (CAS77-86-1) yemizi-mveliso eyahlukeneyo xa uthenga amanyathelo okhuseleko
1. I-Trihydroxymethyl aminomethane yendlela yokwenziwa kwemizi-mveliso Ngenxa yesakhiwo sayo esilula, i-athomu yekhabhoni ephakathi yisakhiwo se-tetrahedral, equlethe i-hydroxymethyl ezintathu kunye neqela le-amino, elinokwenza iintlobo ngeentlobo zokutshintshwa kunye neempendulo ze-REDOX, luhlobo lwe-ch...Funda ngokugqithisileyo
