Cov khoom
| Barium | |
| Melting point | 1000 K (727 ° C, 1341 ° F) |
| Boiling point | 2118 K (1845 ° C, 3353 ° F) |
| Ceev (ze rt) | 3.51 g / cm3 |
| Thaum ua kua (ntawm mp) | 3.338g / cm3 |
| Kub ntawm fusion | 7.12 kJ/mol |
| Kub ntawm vaporization | 142 kJ / mol |
| Molar tshav kub muaj peev xwm | 28.07 J/(mol · K) |
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Barium Carbonate (BaCO3) hmoov 99.75% CAS 513-77-9
Barium Carbonate yog tsim los ntawm ntuj barium sulfate (barite).Barium Carbonate txheem hmoov, hmoov zoo, coarse hmoov thiab granular yog txhua yam tuaj yeem ua kev cai tsim ntawm UrbanMines.
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Barium Hydroxide (Barium Dihydroxide) Ba (OH) 2∙ 8H2O 99%
Barium hydroxide, ib qho tshuaj sib xyaw nrog cov tshuaj formulaBa(OH) 2, yog cov khoom siv dawb, soluble hauv dej, cov tshuaj hu ua barite dej, muaj zog alkaline.Barium Hydroxide muaj lwm lub npe, uas yog: caustic barite, barium hydrate.Cov monohydrate (x = 1), hu ua baryta lossis baryta-dej, yog ib qho ntawm cov ntsiab lus tseem ceeb ntawm barium.Qhov no dawb granular monohydrate yog daim ntawv ua lag luam ib txwm.Tom ntej: Barium Hydroxide Octahydrate, raws li cov dej insoluble crystalline barium ntau qhov chaw, yog ib qho tshuaj inorganic compound uas yog ib qho ntawm cov tshuaj txaus ntshai tshaj plaws siv hauv chav kuaj.Ba(OH) 2.8H2Oyog ib qho xim tsis muaj xim crystal ntawm chav sov.Nws muaj qhov ceev ntawm 2.18g / cm3, dej soluble thiab acid, tshuaj lom, tuaj yeem ua rau puas tsuaj rau lub paj hlwb thiab lub plab zom mov.Ba(OH) 2.8H2Oyog corrosive, yuav ua rau kub hnyiab rau qhov muag thiab tawv nqaij.Nws yuav ua rau digestive ib ntsuj av irratation yog nqos.Piv txwv Reactions: • Ba(OH)2.8H2O + 2NH4SCN = Ba(SCN)2 + 10H2O + 2NH3
