I-lithium hydride CAS 7580-67-8 Ubumsulwa obuyi-99% njengearhente yokunciphisa
Ingcaciso yeMveliso
I-lithium hydride yipowder eqinileyo okanye emhlophe ephuma kumhlophe ukuya kumdaka, ekhanyayo, engenavumba, ejika ibe mnyama ngokukhawuleza xa ichaphazeleka kukukhanya. Ubunzima be-molecular = 7.95; Ubunzima bomxhuzulane obucacileyo (H2O:1)=0.78; Iqondo lokubila = 850℃ (ibola ngaphantsi kwe-BP); Iqondo lokuqandisa/lokunyibilika = 689℃; Iqondo lokushisa elizenzekelayo = 200℃. Ukuchongwa kweNgozi (ngokusekwe kwiNkqubo yoHlelo lweNFPA-704 M): Impilo 3, Ukutsha 4, Ukusabela 2. I-solid evuthayo enokwenza amafu othuli olusemoyeni anokuqhuma xa edibana nelangatye, ubushushu, okanye ii-oxidizers.
Iipropati zeMveliso
I-Lithium hydride (LiH) yinto yetyuwa ekristale (i-cubic ejonge ubuso) emhlophe kwimo yayo ecocekileyo, Njengesixhobo sobunjineli, ineempawu ezinomdla kwiiteknoloji ezininzi. Umzekelo, umxholo ophezulu we-hydrogen kunye nobunzima obuphantsi be-LiH kuyenza ibe luncedo kwizikhuselo ze-neutron kunye nee-moderators kwizityalo zamandla enyukliya. Ukongeza, ubushushu obuphezulu bokuxubana kunye nobunzima obuphantsi kwenza i-LiH ifaneleke kwimidiya yokugcina ubushushu kwizityalo zamandla elanga kwi-satellites kwaye ingasetyenziswa njengesinki sobushushu kwizicelo ezahlukeneyo. Ngokwesiqhelo, iinkqubo zokuvelisa i-LiH zibandakanya ukuphathwa kwe-LiH kumaqondo obushushu angaphezu kwendawo yayo yokunyibilika (688 DC). Intsimbi engatyiwayo yohlobo lwe-304L isetyenziselwa izinto ezininzi zenkqubo eziphatha i-LiH enyibilikisiweyo.
I-lithium hydride yi-ionic hydride eqhelekileyo ene-lithium cations kunye nee-hydride anions. I-electrolysis yezinto ezinyibilikisiweyo ibangela ukwakheka kwe-lithium metal kwi-cathode kunye ne-hydrogen kwi-anode. I-lithium hydride-water reaction, ekhokelela ekukhutshweni kwegesi ye-hydrogen, ikwabonisa i-hydrogen etshajwe kakubi.
I-lithium hydride yipowder eqinileyo okanye emhlophe ephuma kumhlophe ukuya kumdaka, ekhanyayo, engenavumba, enombala omhlophe ojika ube mnyama ngokukhawuleza xa ukhanyiswe kukukhanya. I-lithium hydride ecocekileyo yenza iikristale ze-cubic ezingenambala. Le mveliso ithengiswayo iqulethe iimpawu zokungcola, umz., i-lithium metal engaphendulwanga, kwaye ngenxa yoko ingwevu ekhanyayo okanye eluhlaza okwesibhakabhaka. I-lithium hydride izinzile kakhulu kubushushu, ibe yi-ionic hydride kuphela enyibilikayo ngaphandle kokubola kuxinzelelo lomoya (mp 688 ℃). Ngokungafaniyo nezinye ii-alkali metal hydride, i-lithium hydride inyibilika kancinci kwi-inerte polar organic solvents ezifana nee-ethers. Yenza imixube ye-eutectic enenani elikhulu leetyuwa. I-lithium hydride izinzile emoyeni owomileyo kodwa ivutha kubushushu obuphezulu. Kumoya omanzi inyibilika nge-hydrolyzed exothermically; izinto ezahlulwe kakuhle zinokuvutha ngokuzenzekelayo. Kubushushu obuphezulu, isabela ne-oxygen ukwenza i-lithium oxide, kunye ne-nitrogen ukwenza i-lithium nitride kunye ne-hydrogen, kunye ne-carbon dioxide ukwenza i-lithium formate.
Isicelo
I-lithium hydride isetyenziswa ekwenziweni kwe-lithium aluminium hydride kunye ne-silane, njenge-arhente yokunciphisa enamandla, njenge-condensation agent kwi-organic synthesis, njengomthombo ophathekayo we-hydrogen, kunye nezinto zokukhusela inyukliya ezilula. Ngoku isetyenziselwa ukugcina amandla obushushu kwiinkqubo zamandla asesibhakabhakeni.
I-lithium hydride yikristale eblu-mhlophe etshayo xa imanzi. Isetyenziswa njengomthombo wegesi yehydrogen ephuma xa i-LiH imanzi. I-LiH yi-desiccant ebalaseleyo kunye ne-reducing agent kunye ne-shield ekhusela kwimitha edalwa ziimpendulo zenyukliya.
Ukupakisha kunye nokugcina
Ukupakisha: 100g/ itini yekonkxa; 500g/ itini yekonkxa; 1kg ngetini yekonkxa; 20kg ngedrama yentsimbi
Indawo yokugcina: Ingagcinwa kwiitini zesinyithi ezinesigqubuthelo sangaphandle sokukhusela, okanye kwiidrama zesinyithi ukuthintela umonakalo woomatshini. Gcina kwindawo eyahlukileyo, epholileyo, eyomileyo nengenamoya, kwaye uthintele ngokungqongqo ukufuma. Izakhiwo mazingene umoya kwaye zingabi namoya waneleyo kwisakhiwo ekuqokeleleni igesi.
Ulwazi ngezothutho
Inombolo ye-UN: 1414
Udidi lweHazard: 4.3
Iqela lokupakisha: I
IKHOWUDI YE-HS: 28500090
Inkcazo
| Igama | I-lithium hydride | ||
| I-CAS | 7580-67-8 | ||
| Izinto | Umgangatho | Iziphumo | |
| Inkangeleko | Umgubo wekristale omhlophe ongekho mhlophe | Ukuhambelana | |
| Uvavanyo, % | ≥99 | 99.1 | |
| Isiphelo | Abafanelekileyo | ||
