Lithium hydride CAS 7580-67-8 99% chiyero ngati wothandizira kuchepetsa
Mafotokozedwe Akatundu
Lithium hydride ndi ufa wonyezimira wonyezimira, wonyezimira, wopanda fungo kapena woyera womwe umachita mdima mwachangu ukayatsidwa. Kulemera kwa molekyulu = 7.95; Specificgravity (H2O:1)=0.78; Malo otentha = 850 ℃ (amawola pansi pa BP); Kuzizira / Kusungunuka = 689 ℃; Autoignitiontemperature = 200 ℃. Chizindikiritso cha Hazard (yotengera NFPA-704 M Rating System): Thanzi 3, Kutentha 4, Kuchitanso 2. Cholimba choyaka chomwe chingapange mitambo ya airbornedust yomwe imatha kuphulika ikakumana ndi lawi, kutentha, kapena oxidizer.
Zida Zamalonda
Lithium hydride (LiH) ndi mchere wa crystalline (nkhope-centered cubic) yomwe ndi yoyera mu mawonekedwe ake oyera, Monga zinthu zaumisiri, imakhala ndi chidwi ndi matekinoloje ambiri. Mwachitsanzo, kuchuluka kwa haidrojeni komanso kulemera kochepa kwa LiH kumapangitsa kuti ikhale yothandiza pazishango za neutroni ndi oyang'anira m'mafakitale amagetsi a nyukiliya. Kuonjezera apo, kutentha kwakukulu kwa maphatikizidwe ophatikizana ndi kulemera kopepuka kumapangitsa LiH kukhala yoyenera kusungirako kutentha kwa magetsi a magetsi a dzuwa pa satellites ndipo angagwiritsidwe ntchito ngati kutentha kwa kutentha kwa ntchito zosiyanasiyana. Nthawi zambiri, njira zopangira LiH zimaphatikizapo kusamalira LiH pa kutentha pamwamba pa meltingpoint yake (688 DC). Chitsulo chosapanga dzimbiri cha 304L chimagwiritsidwa ntchito pazinthu zambiri zopangira ma LiH osungunuka.
Lithium hydride ndi ionic hydride yokhala ndi lithiamu cations ndi hydride anions. Electrolysis ya zinthu zosungunuka zimapangitsa kuti lithiamu zitsulo zipangidwe pa cathode ndi hydrogen pa anode. Lithium hydride-water reaction, yomwe imabweretsa kutulutsidwa kwa gasi wa haidrojeni, ikuwonetsanso kuti hydrogen yoyipa kwambiri.
Lithium hydride ndi yoyera-yoyera mpaka yotuwa, yosasunthika, yopanda fungo yolimba kapena yoyera yomwe imadetsedwa mwachangu ikayatsidwa. Lifiyamu hydride yoyera imapanga makhiristo opanda mtundu, ma kiyubiki. Zogulitsa zamalonda zimakhala ndi zonyansa, mwachitsanzo, chitsulo cha lithiamu chosagwiritsidwa ntchito, ndipo chifukwa chake chimakhala chotuwa kapena chabuluu. Lithium hydride ndi yokhazikika pa kutentha kwambiri, kukhala ionic hydride yokhayo yomwe imasungunuka popanda kuwonda ndi kuthamanga kwa mumlengalenga (mp 688 ℃). Mosiyana ndi ma hydrides ena amchere amchere, lithiamu hydride imasungunuka pang'ono mu zosungunulira za polar organic monga ethers. Amapanga zosakaniza za eutectic ndi mchere wambiri. Lithium hydride imakhala yokhazikika mumpweya wouma koma imayaka pakutentha kwakukulu. Mu mpweya wonyowa ndi hydrolyzed exothermically; zinthu zogawanika bwino zimatha kuyaka zokha. Pa kutentha kwakukulu, imachita ndi mpweya kupanga lithiamu oxide, ndi nayitrogeni kupanga lithiamu nitride ndi haidrojeni, ndi carbon dioxide kupanga lithiamu formate.
Kugwiritsa ntchito
Lithium hydride amagwiritsidwa ntchito popanga lithiamu aluminium hydride ndi silane, ngati wochepetsera wamphamvu, ngati condensationagent mu kaphatikizidwe ka organic, ngati gwero la hydrogen, komanso ngati chotchinga chopepuka cha nyukiliya. Tsopano ikugwiritsidwa ntchito posungira mphamvu zotentha m'makina opangira mphamvu za mumlengalenga.
Lithium hydride ndi bluish-white crystal yomwe imatha kuyaka mu chinyezi. Amagwiritsidwa ntchito ngati gwero la mpweya wa haidrojeni womwe umamasulidwa LiH ikanyowa. LiH ndi desiccant yabwino kwambiri komanso yochepetsera komanso chishango chomwe chimateteza ku radiation yopangidwa ndi nyukiliya.
Kulongedza & Kusunga
Kulongedza: 100g / malata chitini; 500g / malata; 1 kg pa chitini; 20kg pa ng'oma yachitsulo
Kusungirako: Ikhoza kusungidwa m'zitini zachitsulo zokhala ndi chophimba chakunja kuti zitetezedwe, kapena m'ng'oma zachitsulo kuti zisawonongeke ndi makina. Sungani pamalo osiyana, ozizira, owuma komanso olowera mpweya wabwino, komanso kupewa chinyezi. Nyumba ziyenera kukhala zokhala ndi mpweya wabwino komanso zopanda mpweya wochuluka.
Zambiri zachitetezo chamayendedwe
Nambala ya UN: 1414
Mtundu Wowopsa: 4.3
PackingGroup: I
HS kodi: 28500090
Kufotokozera
| Dzina | Lithium hydride | ||
| CAS | 7580-67-8 | ||
| Zinthu | Standard | Zotsatira | |
| Maonekedwe | Ufa woyera wa crystalline | Zimagwirizana | |
| Zotsatira,% | ≥99 | 99.1 | |
| Mapeto | Woyenerera | ||
Limbikitsani Zogulitsa
Lithium aluminium hydride CAS 16853-85-3
Lithium Hydrooxide Monohydrate
Lithium Hydroxide ANHYDROUS
Lithium fluoride
