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I-N,N-Dimethylaniline DMA CAS 121-69-7
Eyaziwa nangokuthi i-dimethylaniline, uketshezi olunamafutha olungenambala kuya koluphuzi olukhanyayo, iphunga elicasulayo, emoyeni noma ngaphansi kwelanga ukusetshenziswa kwe-oxidation okulula i-Ze iba julile. Ubuningi obuhlobene (20℃/4℃) 0.9555, iphuzu lokuqandisa 2.0℃, iphuzu lokubila 193℃, iphuzu lokufiphaza (ukuvula) 77℃, iphuzu lokuvutha 317℃, i-viscosity (25℃) 1.528 MP...Funda kabanzi -
Uwoyela waseSaudi uhlaselwa futhi! I-crude ibheke ku-$70!
Igagasi elilodwa alizange linciphise elinye likhuphuke. Izindaba zokunciphisa i-OPEC kanye nokuqhuma kwamabhomu e-Iraq azikapheli, inhloko kawoyela waseSaudi ishaye futhi! Kuqonde ngqo kuma- $70! Inkinga yokuvuselelwa kabusha kweDachang esanda kubekwa, amanani emakethe yezinto zokusetshenziswa agcwele isiphithiphithi! Ngemuva kokuhlaselwa kwe-Iraq, iSaudi Arabia ...Funda kabanzi -
Ukusetshenziswa kwe-2-naphthol
I-2-Naphthol, eyaziwa nangokuthi i-β-naphthol, i-acetonaphthol noma i-2-hydroxynaphthalene, iyizinhlayiya ezimhlophe ezicwebezelayo noma i-powder emhlophe. Ubuningi bungu-1.28g/cm3. Indawo yokuncibilika ingu-123 ~ 124℃, indawo yokubila ingu-285 ~ 286℃, kanti indawo yokuflasha ingu-161℃. Iyavutha, futhi umbala uzoba mnyama ngemva...Funda kabanzi -
sicela ukholwe ukuthi singochwepheshe futhi imboni yethu ibucayi kakhulu
Ukuphelela kufinyelelwa ngamazinga ahamba kancane; kudinga isikhathi. Izwe okwakumelwe lifike, okwakumelwe lihambe liyimpilo, njengezinkumbulo zezizukulwane eziningana, uMalume uDahl washiya unomphela, umbono wokungazi lutho kwakhe, umbono wokuhlekisa kwakhe, ekukhanyeni nasethunzini uzoba mncane emhlabeni wonke.Funda kabanzi -
Ukwehla kwamandla emali? Amanani ayakhuphuka! Ukukhishwa kwamanzi amakhulu ayi-1.9 trillion! Izinto zokusetshenziswa zamakhemikhali nazo ziyalandela imakethe! Uyafuna! Rose!
Amanani ayakhuphuka! Imali iya ngokuya ingasebenzi! IMelika ihola umhlaba ekukhululeni amanzi! Amanani ezimpahla ayakhuphuka! Izindleko zezinto zokwakha zikhuphuke kakhulu, okuphoqa izimpahla zabathengi ezisezingeni eliphansi ukuthi zikhuphuke ngokushesha ngentengo! Ekugcineni, umthengi uyakhokha! Ingabe isikhwama sakho semali silungile? Kuyahlanya kakhulu! I-US iyakhishwa...Funda kabanzi -
Phuma lapha uqaphele! Imali yezwe iwele, amanani akhuphuka, ukuvinjelwa kokulahla izimpahla njalo!
ITurkey isivele ihlushwe ukuwohloka kwemali kanye nokwehla kwamandla emali eminyakeni emibili edlule. Ngo-2020, ubhubhane olusha lwabangela iTurkey enye inkinga, lwayiqhubela ekuwohlokeni okungenamkhawulo. Imali yaseTurkey, i-lira, iyawa ngesivinini esiqopha umlando futhi izimali zayo zokushintshanisa imali zangaphandle ziyawa...Funda kabanzi -
Ifektri yomthombo waseShayina inikeza amakhemikhali amahle: i-N, i-N-dimethyl-p-toluidine
Imikhiqizo emihle idinga ukukhulunywa ngomlomo Manje, inkampani yethu igxile ekuqaliseni le mikhiqizo engu-8 esezingeni eliphezulu. Isetshenziswa kakhulu kwezokwelapha kanye nezidakamizwa, uma udinga ukuxhumana nami nganoma yisiphi isikhathi ukuze uthole intengo engcono kakhulu. Vele, uma umngane wakho noma omunye umuntu omaziyo enesidingo semikhiqizo yethu futhi esincoma...Funda kabanzi -
Ukwenyuka kwentengo yocansi okungalawulwa! Amanani amaningi amakhemikhali aqonde phezulu! Amanani empahla ayanda!
Ngosuku lokuqala emuva kweholide, intengo yezinto zokusetshenziswa zamakhemikhali yakhuphuka. Abanye abantu bathi, ungakhathazeki, ngifuna ukulinda, ukulinda kufike, kuguqule intengo izikhathi eziningana! Ngenqikaza ikhulu, Emakethe yamakhemikhali yanamuhla, i-Trance ayilona ihlaya, yiqiniso! Ayilawuleki...Funda kabanzi -
Umkhuba onamandla emakethe yamakhemikhali kulindeleke ukuthi uqhubeke! I-Athena
Ukuvalwa kwezindawo zokucwenga eziningi! Uwoyela ongahluziwe ukhuphuka uye ezingeni eliphezulu elisha lezinyanga ezingu-13! Njengoba isimo sezulu esibandayo sifinyelela eningizimu yeTexas, sonke isifundazwe saseTexas siphoqelekile ukusebenzisa ukucima kukagesi okushintshashintshayo ukuze kuncishiswe isidingo futhi kugwenywe "ukucima kukagesi okuyingozi" okuqhubeka isikhathi eside. Ukwanda...Funda kabanzi -
Ukushesha nokulawula amadayi ahlukahlukene ezindwangu
. Ukuqina kwezindwangu okuyinhloko okuyisithupha 1. Ukuqina okulula Ukuqina okulula kubhekisela ezingeni lokushintsha kombala kwezindwangu ezinemibala ngenxa yokukhanya kwelanga. Indlela yokuhlola ingaba ukuchayeka elangeni noma ukuchayeka emshinini wasemini. Izinga lokuphela kwesampula ngemva kokuchayeka liqhathaniswa nesampula yombala ejwayelekile. Kuhluka...Funda kabanzi -
Mangaki amabhokisi angekho? Isitsha asisekho emgqeni wokukhiqiza futhi sithunyelwa ngqo esigungwini!
Isitsha "kulukhuni ukusithola ibhokisi", ukuze amabhizinisi okukhiqiza izitsha alethe ukukhula okukhulu, amanye amabhizinisi ezitsha ngesikhathi seNtwasahlobo nawo andise ukukhiqiza ukuze ahlangabezane nama-oda. Ukunikezwa kwezitsha kudlula isidingo Abakhiqizi bayaqhubeka nokuqasha...Funda kabanzi -
I-Trimethylol amino methane (CAS77-86-1) yezimboni ezahlukene lapho uthenga izindlela zokuqapha
1. I-Trihydroxymethyl aminomethane yesiqondiso sokwenziwa kwezimboni Ngenxa yesakhiwo sayo esilula, i-athomu yekhabhoni ephakathi iyisakhiwo se-tetrahedral, equkethe i-hydroxymethyl ezintathu kanye neqembu lama-amino, elingenza ukushintshwa okuhlukahlukene kanye nokusabela kwe-REDOX, uhlobo lwe-ch...Funda kabanzi
