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inquiryBarium (Ba)Appearance:Piece and powder (in oil)
Supply top quality products with a reasonable price Application:api
BariumAppearance:Off white to slight yellow solid Storage:Stored in shaded, cool and dry places Package:1L 5L 10L 25L bottle Application:pharma intermediate Transportation:Handle with cares to avoid damaging the packages. Protect them from sunshine o
high purity Application:Drug intermediates Materials intermediates and active molecules
barium
Conditions | Yield |
---|---|
byproducts: NH3; decompn. in vac.; | 100% |
barium
Conditions | Yield |
---|---|
from solid recrystd. BaN6; hydrolysis; pure metal; | 100% |
In neat (no solvent) thermic decomposition of Ba(N3)2;; | |
byproducts: nitrogen; at 160-120 °C; |
Conditions | Yield |
---|---|
5h in vac. at 1300-1340 °C; Metal distilles off. Repeated distn. gives 99.5% purity; | 98.5% |
4h in vac. at 1010-1030 °C; opening of apparatus under CO2, crushing of product under desiccated toluene to avoid self inflammation; Metal sublimes off. Repeated distn. gives 99.48% purity; | |
sublimation in vac.; 99.9% Ba; | |
sublimation in vac.; 99.9% Ba; |
Conditions | Yield |
---|---|
1.5h at 1250°C; Ba distilles off; | 63% |
1.5h at 1250°C; Ba distilles off; | 63% |
1.5h in vac. at 1220-1230 °C; |
Conditions | Yield |
---|---|
In neat (no solvent) byproducts: CO, CO2; thermal decompn. (700-1200 K, 30-40 K steps, 5 min at each temp.-step); Auger spectroscopy, pressure monitoring; |
Conditions | Yield |
---|---|
With pyrographite In neat (no solvent) heating of BaCO3 and charcoal forms BaO; BaO is reduced above 1400°C forming Ba or BaC2; examination of the weight-loss depending on heating rate;; | |
With charcoal |
barium
Conditions | Yield |
---|---|
With Fe/Si alloy In neat (no solvent) reduction of BaCO3 with an Fe-Si-alloy with 25% Fe;; | |
With Ta or Nb In neat (no solvent) reduction of BaCO3 with Ta or Nb at 1600°C;; | |
With Fe/Si alloy In neat (no solvent) reduction of BaCO3 with an Fe-Si-alloy with 25% Fe;; |
Conditions | Yield |
---|---|
In neat (no solvent) byproducts: C; heating equal amounts of carbonate and Al powder to red heat;; powdery product mixture obtained;; | |
In neat (no solvent) byproducts: C; heating equal amounts of carbonate and Al powder to red heat;; powdery product mixture obtained;; |
Conditions | Yield |
---|---|
With barium(II) chloride In neat (no solvent) Electrolysis; satn. of molten BaCl2-LiCl- or BaCl2-NaCl-mixtures with BaCO3, electrolysis for 1.5h (3-4 V, 10 A, carbon electrodes) forms Ba and CO;; | |
With BaCl2; LiCl or NaCl |
barium
Conditions | Yield |
---|---|
With Ti or Zr or Hf or Al or Be In neat (no solvent) reduction of BaS with Ti or Zr or Hf or Al or Be at approx. 900°C in vac.;; | |
In melt Electrolysis; electrolysis of waterfree BaS in BaF2- or cryolite melt under a inert or reducing atmosphere (H2 or Ar) at normal or reduced pressure with C-electrodes; electrolysis in absence of air, N2 and O2;; | |
With Ce or Th or U In neat (no solvent) attack of metals like Ce, Th or U above 1500°C on BaS under formation of gaseous Ba;; |
Conditions | Yield |
---|---|
With sodium cyanide byproducts: Na, CO, nitrogen; at 750°C in vac.; formation of alloy with Na; | A 0% B n/a |
barium
Conditions | Yield |
---|---|
In neat (no solvent) Electrolysis; electrolytic decomposition of BaO forms Ba;; | |
With Al or Mg In neat (no solvent) warming of BaO in pieces or as powder; put into contact with molten Al or Mg at temperatures that BaO smelts quickly;; | |
With Al or Ti or Zr or Nb or W or Mo In neat (no solvent) reduction of an intermediary Ba-beryllate (formed from BaO and BeO) with Al or Ti or Zr or Nb or W or Mo;; |
Conditions | Yield |
---|---|
In neat (no solvent) dissociation of BaO in gaseous Ba and O2 at 1073 K, 1273 K and 1473 K; examination of the equilibrium;; | |
In neat (no solvent) dissociation of BaO in gaseous Ba and O2 at 1073 K, 1273 K and 1473 K; examination of the equilibrium;; |
Conditions | Yield |
---|---|
partial reduction of BaO on heating with K; | |
heating; extn. (Hg) and decompn. of amalgam; |
Conditions | Yield |
---|---|
In neat (no solvent) reduction of solid BaO with gaseous Mg forms gaseous Ba and MgO;; |
Conditions | Yield |
---|---|
byproducts: MgO; at higher temp.; equil.; no pure Ba obtainable; |
Conditions | Yield |
---|---|
above 360°C at normal pressure; at 490°C explosive react.; | |
above 500°C in vac.; | |
above 500°C in vac.; | |
above 360°C at normal pressure; at 490°C explosive react.; |
Conditions | Yield |
---|---|
In neat (no solvent) reduction of solid BaO with solid Ni forms gaseous Ba and solid NiO;; | |
equilibrium constant at 800-1200°C; |
Conditions | Yield |
---|---|
at 1100 °C; gaseous Ba for spectroscopic purposes; | |
big excess of BaO; Ba vapour spreading through BaO layer before condensation; |
Conditions | Yield |
---|---|
forming metal mirror for special purposes; |
Conditions | Yield |
---|---|
at 1200 °C in vac.; 98.5% Ba; | |
In neat (no solvent) reaction of solid BaO with solid Si forms gaseous Ba and solid BaSiO3;; |
Conditions | Yield |
---|---|
In neat (no solvent) endothermic reduction of BaO with Si under formation of Ba and SiO2;; | |
In neat (no solvent) reaction of solid BaO with solid Si forms gaseous Ba and liquid SiO2;; | |
In neat (no solvent) endothermic reduction of BaO with Si under formation of Ba and SiO2;; |
Conditions | Yield |
---|---|
forming metal mirror for special purposes; |
Conditions | Yield |
---|---|
forming metal mirror for special purposes; |
Conditions | Yield |
---|---|
260-560°C, then 0.5h at 600°C; | 100% |
In neat (no solvent) exothermic formation out of the elements at temperatures under the melting point of Ba; after heating cooling to keeping the necessary temperature;; | |
above 190°C; 96.15% Ba3N2; |
Conditions | Yield |
---|---|
In neat (no solvent) loading and unloading carried out in inert gas; Ba metal loaded in tungsten crucible, which palced in a steel tube before loaded in quartz glasstube; evacuated (p<1E-6 bar); heated in stream of nitrogen at 1120 K fo r 24 h; evacuated again (p<1E-6 bar) for 24 h at 900 K; elem. anal.; | 100% |
In further solvent(s) absence of air and moisture; passing N2 through soln. of Ba in liquid Naat 573 K (pptn.); filtration; reaction followed by resistivity measurements; | |
In further solvent(s) under inert atmosphere; Ba submerged in molten Na in stainless steel crucible; sealed; evacuated; filled with N2; heated at 973 K for 48 h; cooled under vac.; heated at 723 K for 24 h; cooled to room temp.; opened in Ar filled glovebox; detd. by X-ray powder diffraction; |
Conditions | Yield |
---|---|
In neat (no solvent) Ar atm.; molar ratio Ba:Li:Ge 4:2.1:6, 1000°C; cooling (400°C), annealing; | 100% |
Conditions | Yield |
---|---|
In neat (no solvent) Ar atm.; molar ratio Ba:Li:Si 4:2.1:6, 1000°C; cooling (400°C), annealing; | 100% |
2,2-dimethyl-5-(N',N'-dimethylaminopropyl-imino)-8-methoxyoctan-3-one
barium
Conditions | Yield |
---|---|
at 20℃; for 168h; | 99% |
Conditions | Yield |
---|---|
In neat (no solvent) Ba:Ge:Se=2:1:4 ratio, sealed silica tube, with exclusion of air, heatingat 800 °C, keeing at this temp. for 5 d; slow (1 °C/h) cooling to room temp.; | 99% |
Conditions | Yield |
---|---|
In neat (no solvent) mixt. of Ba, Sn, Se in stoich. ratio 2:1:5 was placed into fused silica tube; sealed under vac.; put into furnace; heated to 750°C within3 ds; kept at 750°C for 4 ds; cooled to 700°C within 10 m in; annealed at 650°C for 4 ds; cooled to room temp. within 4 ds; | 99% |
Stage #1: selenium; tin; barium at 750℃; for 150h; Sealed tube; Stage #2: at 650℃; for 100h; |
Conditions | Yield |
---|---|
In melt Electric Arc; 1:1-mixt. of Sr and Sb; | 99% |
In melt under Ar; mixt. of Ba (12.43 mmol) and Sb (8.276) heated to 850°Cwith 200°C/h, cooled to room temp. with 100°C/h; | |
In melt 5:4-mixt. of Ba and Sb heated in alumina or Ta-crucible to 1100°C, kept at this temp. for ca. 1 h, cooled with 50-100°C/h; |
copper
barium
Conditions | Yield |
---|---|
In neat (no solvent) molar ratio Ba:Cu:P=1:10:4, pressing powders ino pellets (under N2), heating in Al-boat inside sealed quartz tube (rapidly to 800°C, at 60°C to 1200°C, 1200°C for 24 h), cooling to 800°C at 60°C/h; | 99% |
Conditions | Yield |
---|---|
In isopropyl alcohol molar ratio Ba:Nb=1:2; elem. anal.; | 99% |
Conditions | Yield |
---|---|
In neat (no solvent) stoich. amts., carbon-coated sealed glass tube (vac.), 830°C (5 d), cooling to 530°C at 10°C/h, then to 100°C over 12 h; washing (degassed water, MeOH, ether); | 95% |
Conditions | Yield |
---|---|
In neat (no solvent) mixt. Ba, Au, and In in welded tantalum tube was heated at 1050°Cfor 4 h, quenched in water, reheated at 600°C for 7 days, and co oled at 5°C to room temp.; elem. anal.; | 95% |
Conditions | Yield |
---|---|
In neat (no solvent) mixt. Ba, Au, and Tl in welded tantalum tube was heated at 1050°Cfor 4 h, quenched in water, reheated at 600°C for 7 days, and co oled at 5°C to room temp.; elem. anal.; | 95% |
Conditions | Yield |
---|---|
In neat (no solvent) mixt. Ba, Au, and Tl (1:0.4:1.6) in Nb tubing was heated at 1000°C, quenched in water and annealed at 600°C for 4 days; | 95% |
Conditions | Yield |
---|---|
In neat (no solvent, solid phase) placing of Ba and Ge in welded Ta containers, heating under vac. at 1150°C for 6 h, cooling to 650°C with rate of 10-12°C/h; | 95% |
Conditions | Yield |
---|---|
In neat (no solvent) stoich. amts., carbon-coated sealed glass tube (vac.), 830°C (5 d), cooling to 530°C at 10°C/h, then to 100°C over 12 h; powder X-ray diffraction; | 95% |
Conditions | Yield |
---|---|
In ammonia; ethylenediamine NH3 (liquid); Electrolysis; (N2); warming Ba and S in liquid NH3 to room temp. over 24 h, heating the amorphous product to 550°C under vac. to get a crystd. batch, addn. of ethylenediamine, heating to 110°C for 2 h, electrolysis (Ag electrodes, 1.0 V, 3 d); drying of the two compounds; | A 95% B 5% |
tetrahydrofuran
3-Dimethylamino-1-propanol
copper(II) trifluoroacetate
barium
Conditions | Yield |
---|---|
In tetrahydrofuran (N2, Schlenk techniques); addn. of Ba to soln. of nitrogen compd. in C4H8O, stirring for 2 h until Ba was consumed, dropwise addn. of soln. of copper compd. in C4H8O, stirring for 5 h; filtration, evapn. to dryness under vacuum, dissolving in C4H8O, isolation of crystals after 3 days, elem. anal.; | 95% |
Conditions | Yield |
---|---|
Stage #1: germanium; silver; barium; sulfur With barium(II) chloride at 299.84℃; under 7.50075E-06 Torr; for 20h; Sealed tube; Stage #2: at 899.84℃; under 7.50075E-06 Torr; for 100h; Sealed tube; | 95% |
18-crown-6 ether
6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5,octanedione
barium
Conditions | Yield |
---|---|
Stage #1: 18-crown-6 ether; barium In ethanol Schlenk technique; Inert atmosphere; Reflux; Stage #2: 6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5,octanedione In ethanol for 1h; Schlenk technique; Inert atmosphere; Reflux; | 95% |
Conditions | Yield |
---|---|
at 20℃; Schlenk technique; Glovebox; Inert atmosphere; | 93% |
platinum In ammonia byproducts: H2; decompn. of a soln. of the metal in NH3 at -37°C using a Pt-wire as catalyst, 2 weeks; exclusion of O2 and moisture;; | |
In ammonia NH3 (liquid); dissoln. of Ba in liquid NH3 at -77°C in a pressure tube, warmingto room temp. (20 h), recooling to -40°C, evapn. of NH3 by a N2 stream; elem. anal.; |
Conditions | Yield |
---|---|
In toluene under Ar atm. to soln. bis((trimethylsilyl)methyl)zinc in toluene was added Ba and stired at room temp. for 36 h; soln. was filtered, soln. was concd. and cooled to -20°C; elem. anal.; | 93% |
Conditions | Yield |
---|---|
at 20℃; for 168h; Inert atmosphere; | 92% |
Conditions | Yield |
---|---|
In toluene | 90% |
Conditions | Yield |
---|---|
at 400 - 1000℃; for 63h; Glovebox; Inert atmosphere; Sealed tube; | 90% |
In neat (no solvent) heating in corundum crucible in closed quartz ampoule to 300°C (40°C/h); holding, 1h; heating to 1250°C (50°C/h); annealing, 1h; cooling to room temp. (100°C/h); elem. anal.; |