Sodium hydride CAS 7646-69-7
Tsananguro yeChigadzirwa
Zita reChigadzirwa: Sodium hydride
CAS:7646-69-7
MF: NaH
MW:24
EINECS:231-587-3
Nzvimbo yekunyunguduka: 800 °C (Dec.) (yakapfava)
kuwanda :1.2
Kupisa kwekuchengetedza: Chengeta pasi pe +30°C.
Kunyungudika: Inonyungudika mu sodium yakanyungudutswa. Hainyungudike mu ammonia, benzene, kabhoni tetrachloride, kabhoni disulfide uye zvese zvinonyungudutsa.
Ruvara: Chena kusvika grey rakachenuruka.
Zvivakwa zveChigadzirwa
Sodium hydride ndeyemakristaro eionic, makemikari emunyu umo hydrogen iri maion ane negative monovalent. Kana ichipisa, haina kugadzikana, inoora isina kunyunguduka, uye sodium hydride inosanganiswa nemvura kuti igadzire sodium hydroxide nehydrogen.
Sodium hydride yakachena ikristaro yesirivha yakaita setsono, zvinhu zve sodium hydride zvinowanikwa mumusika zvinowanzova upfu hwegrey crystalline, chikamu che sodium hydride chiri 25% kusvika 50% chakapararira mumafuta. Huwandu hwe 0.92. Sodium hydride i crystalline rock salt type structure (lattice constant a = 0.488nm), uye se lithium hydride mu ionic crystalline, hydrogen ion inowanikwa mu anion form. Kupisa kwekuumbwa kwayo i 69.5kJ · mol-1, pakupisa kwakanyanya kwe 800 ℃, inoora kuita metallic sodium ne hydrogen; inoora zvakanyanya mumvura; inoita zvine simba ne alcohols shoma; inonyungudika mu sodium yakanyungudutswa ne sodium hydroxide yakanyungudutswa; isinganyunguduke mu liquid ammonia, benzene, carbon tetrachloride uye carbon disulfide.
Gireyi yakasimba. Sodium hydride yakachena inoumba makristaro asina ruvara; zvisinei, chigadzirwa ichi chine zvisaririra zvesimbi yesodium, zvichiita kuti ive grey yakareruka. Pakumanikidzwa kwemhepo, sodium hydride inochinja zvishoma nezvishoma hydrogen pamusoro pe300 ℃. Pa420 ℃ kuora kunokurumidza asi kunyunguduka hakuitike. Sodium hydride munyu saka hainyungudike muzvinhu zvisinganyungudike zveorganic. Inonyungudika mu sodium hydroxide yakanyungudutswa, mu sodium - potassium alloys uye mu melt LiCl - KCl eutectic mixtures (352 ℃). Sodium hydride inogara yakasimba mumhepo yakaoma asi inobatidza pamusoro pe230 ℃, ichitsva kuti igadzire sodium oxide. Inobatidzwa nekukurumidza mumhepo yakanyorova uye seupfu hwakaoma inobvira yoga. Sodium hydride inoita zvine simba zvikuru nemvura, kupisa kwe hydrolysis kwakakwana kuti ibatidze hydrogen yakasunungurwa. Inoita zvine simba ne carbon dioxide kuti igadzire sodium formate.
Kushandiswa
Sodium hydride inogona kushandiswa pakuita kuti mvura iite condensation uye alkylation reaction uye inogona kushandiswa se polymerization catalyst, inoshandiswa pakugadzira mishonga yakagadzirwa uye inoshandiswa muindasitiri yezvinonhuwira, inoshandiswa pakugadzira boron hydrides, inoshandiswa sesimbi pamusoro pengura, kuderedza zvinhu, condensing agent, desiccant uye Clay Johnson's reagents.
Inoshandiswa semushonga unodziisa mvura, mushonga we alkylating uye mushonga wekuderedza kupisa, nezvimwewo. Inoderedza kupisa kwemafuta, zvinonhuhwirira, madhayi, asiwo semushonga wekuomesa, mushonga we alkylating, nezvimwewo.
Pakupisa kwakaderera apo kudzikisa kwe sodium hakudiwi sepakusanganiswa kwema ketones uye aldehydes ane acid esters; mumushonga une sodium hydroxide yakanyungudutswa yekudzikisa oxide scale pasimbi; pakupisa kwakakwirira semushonga unodzikisa uye unokonzeresa kudzikisa.
Sodium hydride inoshandiswa kuwedzera maitiro ekuumbwa kwecarbonyl compounds kuburikidza neDieckmann condensation, Stobbe condensation, Darzens condensation uye Claisen condensation. Inoshanda semushonga unodzikisa unoshandiswa kugadzira diborane kubva ku boron trifluoride. Inoshandiswawo mumotokari dzemafuta. Uyezve, inoshandiswa kuomesa zvimwe zvinonyungudutsa zve organic. Pamusoro peizvi, inobatsira mukugadzira sulfur ylides, iyo inoshandiswa kushandura ketones kuita epoxides.
Kurongedza & Kuchengeta
Kurongedza: 100g/ gaba resimbi; 500g/ gaba resimbi; 1kg pagaba resimbi; 20kg padhiramu resimbi
Kuchengetera: Inogona kuchengetwa mumagaba esimbi ane chifukidziro chekunze chekudzivirira, kana mumadhiramu esimbi kudzivirira kukuvara kwemuchina. Chengeta munzvimbo yakasiyana, inotonhorera, yakaoma uye ine mhepo yakanaka, uye dzivirira hunyoro zvakanyanya. Zvivako zvinofanirwa kunge zvine mhepo yakanaka uye zvisina kuungana kwegasi.
Ruzivo rwezvekufambisa
Nhamba yeUN: 1427
Kirasi yeHazard: 4.3
Boka reKurongedza: I
HS CODE: 28500090
Tsanangudzo
| Zita rechigadzirwa | Sodium hydride | |
| Nhamba yeCAS | 7646-69-7 | |
| Zvinhu | Zvakajairika | Mhedzisiro |
| Chitarisiko | Zvidimbu zvakasimba zvesirivha grey | Zvinoenderana |
| Kuyedza | ≥60% | Zvinoenderana |
| Huwandu hwehydrogen hunoshanda | ≥96% | Zvinoenderana |
| Mhedziso | Zvinoenderana neBhizinesi Standard | |
