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umkhiqizo

I-sodium borohydride(CAS#16940-66-2)

Isakhiwo Samakhemikhali:

I-Molecular Formula BH4Na
I-Molar Mass 37.83
Ukuminyana 1.035g/mLat 25°C
I-Melting Point >300 °C (dec.) (lit.)
I-Boling Point 500°C
I-Flash Point 158°F
Ukuncibilika kwamanzi 550 g/L (25 ºC)
Ukubukeka amaphilisi
I-Gravity ethize 1.4
Umbala Emhlophe
I-Merck 14,8592
PH 11 (10g/l, H2O, 20℃)
Isimo Sesitoreji Gcina kwa-RT.
Ukuzinza Ukuzinza Kuzinzile, kodwa kusabela ngokushesha emanzini (ukusabela kungase kube nobudlova). Akuhambisani namanzi, ama-oxidizing agents, i-carbon dioxide, i-hydrogen halides, ama-acids, i-palladium, i-ruthenium kanye nosawoti wensimbi
Kuyazwela I-Hygroscopic
Umkhawulo Oqhumayo 3.02%(V)
Izakhiwo Zomzimba Nezamakhemikhali Impushana emhlophe eyikristalu, imunca kalula umswakama, ivutha uma kuba nomlilo
Sebenzisa Isetshenziswa njenge-ejenti yokunciphisa ama-aldehydes, ama-ketones kanye ne-asidi chloride, i-ejenti ekhipha amagwebu embonini yepulasitiki, i-ejenti yokuxubha ekwenzeni iphepha kanye ne-hydrogenating ejenti yokukhiqiza i-Dihydrostreptomycin embonini yezemithi.

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Amakhodi Engozi I-R60 - Ingase iphazamise inzalo
U-R61 - Ingabangela ukulimala enganeni engakazalwa
R15 – Ukuthintana namanzi kukhulula amagesi avuthayo kakhulu
R34 – Ibangela ukusha
R23/24/25 – Kunobuthi ngokuhogela, ukuthintana nesikhumba futhi uma ugwinywe.
R24/25 -
R35 – Idala ukusha kanzima
R21/22 – Kuyingozi ukuthinta isikhumba futhi uma ugwinyiwe.
R51/53 – Ukuba nobuthi ezintweni eziphila emanzini, kungabangela imiphumela emibi yesikhathi eside endaweni yasemanzini.
R42/43 - Ingabangela ukuzwela ngokuhogela umoya nangokuthinta isikhumba.
R49 – Ingabangela umdlavuza ngokuhogela
R63 – Ingozi engaba khona yokulimala enganeni engakazalwa
R62 – Ingozi engaba khona yokukhubazeka kokuzala
R36/38 – Ukucasuka emehlweni nasesikhunjeni.
R43 - Ingabangela ukuzwela ngokuthinta isikhumba
I-R19 – Ingase yenze ama-peroxides aqhumayo
I-R68 – Ingozi engaba khona yemiphumela engenakuhlehliswa
R50/53 – Kunobuthi kakhulu ezintweni eziphila emanzini, kungabangela imiphumela emibi yesikhathi eside endaweni yasemanzini.
Incazelo Yokuphepha S53 – Gwema ukuchayeka – thola imiyalelo ekhethekile ngaphambi kokuyisebenzisa.
S43 – Uma kusetshenziswa umlilo … (kulandela uhlobo lwempahla yokucisha umlilo ezosetshenziswa.)
S45 – Uma kwenzeka ingozi noma uzizwa ungaphilile, funa iseluleko sezokwelapha ngokushesha (bonisa ilebula noma nini lapho kunokwenzeka.)
I-S43A -
S36/37/39 – Gqoka izingubo zokuzivikela ezifanele, amagilavu ​​kanye nokuvikela iso/ubuso.
S26 – Uma uthintana namehlo, geza ngokushesha ngamanzi amaningi futhi ufune iseluleko sezokwelapha.
S22 - Ungaphefumuli uthuli.
I-S50 - Ungaxubani ne...
I-S36/37 – Gqoka izingubo zokuzivikela ezifanele namagilavu.
I-S61 - Gwema ukudedelwa endaweni. Bheka imiyalelo ekhethekile / amaphepha edatha okuphepha.
Ama-ID e-UN UN 3129 4.3/PG 3
I-WGK Germany 2
I-RTECS ED3325000
AMAKHODI E-FLUKA BRAND F 10-21
I-TSCA Yebo
Ikhodi ye-HS 28500090
I-Hazard Class 4.3
Iqembu Lokupakisha I
Ubuthi I-LD50 ngomlomo kuNogwaja: 160 mg/kg LD50 dermal Rabbit 230 mg/kg

 

Isingeniso

I-sodium borohydride iyinhlanganisela ye-inorganic. Kuyimpushana eqinile encibilika kalula emanzini futhi ikhiqize isixazululo se-alkaline.

 

I-sodium borohydride inamandla okunciphisa izakhiwo futhi ingasabela ngezinhlanganisela eziningi eziphilayo. Isetshenziswa kabanzi ku-organic synthesis futhi ivame ukusetshenziswa njenge-agent ye-hydrogenating. I-sodium borohydride inganciphisa ama-aldehyde, ama-ketone, ama-ester, njll. kuma-alcohols ahambisanayo, futhi inganciphisa nama-acids abe otshwala. I-sodium borohydride ingasetshenziswa futhi ku-decarboxylation, dehalogenation, denitrification nokunye ukusabela.

 

Ukulungiswa kwe-sodium borohydride ngokuvamile kutholakala ngokusabela kwe-borane nensimbi ye-sodium. Okokuqala, insimbi ye-sodium isabela nge-hydrogen ukuze kulungiswe i-sodium hydride, bese isabela nge-trimethylamine borane (noma i-triethylaminoborane) ku-ether solvent ukuze kutholwe i-sodium borohydride.

 

I-sodium borohydride iyi-ejenti yokunciphisa enamandla esabela ngokushesha enomswakama nomoya-mpilo emoyeni ukuze ikhulule i-hydrogen. Isitsha kufanele sivalwe ngokushesha futhi sigcinwe somile ngesikhathi sokusebenza. I-sodium borohydride iphinde ihlangane kalula nama-asidi ukuze ikhulule igesi ye-hydrogen, futhi ukuthintana nama-asidi kufanele kugwenywe. I-sodium borohydride nayo inobuthi, futhi kufanele kuqashelwe ukugwema ukuhogela noma ukuthinta isikhumba. Uma usebenzisa i-sodium borohydride, gqoka amagilavu ​​okuzivikela kanye nezibuko, futhi uqinisekise ukuthi ukuhlinzwa kwenziwa endaweni enomoya omuhle.


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