臭化カルシウム
WordNet
- a white metallic element that burns with a brilliant light; the fifth most abundant element in the earths crust; an important component of most plants and animals (同)Ca, atomic number 20
- any of the salts of hydrobromic acid; formerly used as a sedative but now generally replaced by safer drugs
PrepTutorEJDIC
- 『カルシウム』(金属元素;化学記号は『Ca』)
- 〈U〉臭化物(鎮静剤・睡眠剤として用いる) / 〈C〉《話》陳腐なことば
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2019/07/21 10:45:14」(JST)
[Wiki en表示]
Calcium bromide
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| Names
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| IUPAC name
Calcium bromide
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| Other names
Calcium dibromide
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| Identifiers
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CAS Number
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- 7789-41-5 anhydrous Y
- 7774-34-7 hexahydrate N
- 22208-73-7 dihydrate N
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3D model (JSmol)
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| ChEBI
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| ChemSpider
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| ECHA InfoCard
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100.029.240
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| EC Number
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232-164-6
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| RTECS number
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EV9328000
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| UNII
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InChI
InChI=1S/2BrH.Ca/h2*1H;/q;;+2/p-2 Y Key: WGEFECGEFUFIQW-UHFFFAOYSA-L Y InChI=1/2BrH.Ca/h2*1H;/q;;+2/p-2 Key: WGEFECGEFUFIQW-NUQVWONBAA
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| Properties
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Chemical formula
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CaBr2
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| Molar mass
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199.89 g/mol (anhydrous)
235.98 g/mol (dihydrate)
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| Appearance
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anhydrous is hygroscopic colorless crystals
sharp saline taste
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| Density
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3.353 g/cm3
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| Melting point
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730 °C (1,350 °F; 1,000 K)
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| Boiling point
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1,935 °C (3,515 °F; 2,208 K) (anhydrous)
810 °C (dihydrate)
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Solubility in water
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125 g/100 mL (0 °C)
143 g/100 ml (20 °C)
312 g/100 mL (100 °C)
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| Solubility in alcohol, acetone
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soluble
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| Acidity (pKa)
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9
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Magnetic susceptibility (χ)
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-73.8·10−6 cm3/mol
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| Structure
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Crystal structure
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rhomboid
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| Thermochemistry
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Heat capacity (C)
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75 J/mol K
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Std molar
entropy (So298)
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130 J/mol K
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Std enthalpy of
formation (ΔfH⦵298)
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-647.9 kJ/mol
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Gibbs free energy (ΔfG˚)
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-656.1 kJ/mol
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| Hazards
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| NFPA 704
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| Lethal dose or concentration (LD, LC):
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LD50 (median dose)
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4100 mg/kg (rat, oral)
1580 mg/kg (mouse, subcutaneous)
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| Related compounds
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Other anions
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Calcium fluoride
Calcium chloride
Calcium iodide
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Other cations
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Beryllium bromide
Magnesium bromide
Strontium bromide
Barium bromide
Radium bromide
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
| N verify (what is YN ?)
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| Infobox references
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Calcium bromide is the name for compounds with the chemical formula CaBr2(H2O)x. Individual compounds include the anhydrous material (x = 0), the hexahydrate (x = 6), and the rare dihydrate (x = 2). All are white powders that dissolve in water, and from these solutions crystallizes the hexahydrate. The hydrated form is mainly used in some drilling fluids.[1]
Synthesis, structure, and reactions
It is produced by the reaction of calcium oxide, calcium carbonate with hydrobromic acid or the reaction of calcium metal with elemental bromine.[1]
It adopts the rutile structure, featuring octahedral Ca centres bound to six bromide anions, which also bridge to other Ca centres.
When strongly heated in air, calcium bromide will react with oxygen to produce calcium oxide and bromine:
- 2 CaBr2 + O2 → 2 CaO + 2 Br2
In this reaction the oxygen oxidizes the bromide to bromine.
Uses
It is mainly used as dense aqueous solutions for drilling fluids.[1] It is also used in neuroses medication, freezing mixtures, food preservatives, photography and fire retardants.[2]
References
- ^ a b c Michael J. Dagani, Henry J. Barda, Theodore J. Benya, David C. Sanders “Bromine Compounds” Ullmann's Encyclopedia of Industrial Chemistry 2002, Wiley-VCH, Weinheim. doi:10.1002/14356007.a04_405
- ^ "Chemical Land 21". Retrieved 25 December 2008.
External links
- Calcium bromide at WebElements
- MSDS
Calcium compounds |
|---|
- CaAl2O4
- CaB6
- CaBr2
- Ca(BrO3)2
- CaC2
- CaCN2
- Ca(CN)2
- CaCO3
- CaC2O4
- CaCl2
- Ca(ClO)2
- Ca(ClO3)2
- CaCrO4
- CaF2
- CaH2
- Ca(HCO3)2
- CaH2S2O6
- CaI2
- Ca(IO3)2
- Ca(MnO4)2
- CaN6
- Ca(NO3)2
- CaO
- CaO2
- Ca(OH)2
- CaP
- CaS
- CaSO3
- CaSO4
- CaSe
- CaSi
- CaSi2
- CaTiO3
- Ca2P2O7
- Ca2SiO4
- Ca3Al2O6
- Ca3(AsO4)2
- Ca3(BO3)2
- Ca3(C6H5O7)2
- Ca3N2
- Ca3P2
- Ca4(PO4)2O
- Ca3(PO4)2
- Ca(H2PO4)2
- CaHPO4
- C36H70CaO4
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Bromine compounds |
|---|
- AgBr
- AlBr3
- AmBr3
- AsBr3
- AuBr3
- BBr3
- B2Br4
- BaBr2
- BeBr2
- BiBr3
- BrCl
- CsBr
- BrF3
- BrF5
- HBr
- IBr
- KBr
- LiBr
- BrN3
- NaBr
- BrO2
- RbBr
- TlBr
- CaBr2
- CdBr2
- CoBr2
- CuBr2
- EuBr2
- FeBr2
- GeBr2
- HgBr2
- Hg2Br2
- MgBr2
- MnBr2
- NiBr2
- Br2O
- Br2O3
- Br2O5
- PbBr2
- PdBr2
- PtBr2
- RaBr2
- S2Br2
- Se2Br2
- SnBr2
- SrBr2
- TeBr2
- YbBr2
- ZnBr2
- CeBr3
- CrBr3
- CsBr3
- DyBr3
- ErBr3
- EuBr3
- FeBr3
- GaBr3
- GdBr3
- HoBr3
- InBr
- InBr3
- IrBr3
- LaBr3
- LuBr3
- MoBr3
- NBr3
- NdBr3
- PBr3
- PrBr3
- ReBr3
- SbBr3
- SmBr3
- TbBr3
- TmBr3
- UBr3
- VBr3
- YBr3
- YbBr3
- GeBr4
- HfBr4
- PbBr4
- SeBr4
- SiBr4
- SnBr4
- TeBr4
- ThBr4
- TiBr4
- UBr4
- WBr4
- ZrBr4
- NbBr5
- PBr5
- TaBr5
- UBr5
- WBr5
- CBr4
- CrBr2
- DyBr2
- HfBr2
- HfBr3
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Chemical formulas |
UpToDate Contents
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- 1. 骨粗鬆症におけるカルシウムおよびビタミンDの補充calcium and vitamin d supplementation in osteoporosis [show details]
… are some limitations to its use compared with calcium citrate: Calcium carbonate absorption is better when taken with meals; in comparison, calcium citrate is well absorbed in the fasting state and is …
- 2. 副甲状腺機能低下症hypoparathyroidism [show details]
…primarily determined by trial and error. Children – For children, oral calcium glubionate, calcium carbonate, or calcium citrate is administered (25 to 50 mg/kg elemental calcium daily) in divided doses …
- 3. 低カルシウム血症の治療treatment of hypocalcemia [show details]
… Either 10% calcium gluconate (90 mg of elemental calcium per 10 mL) or 10% calcium chloride (270 mg of elemental calcium per 10 mL) can be used to prepare the infusion solution. Calcium gluconate is usually …
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…choice among the many different calcium-containing phosphate binders, such as calcium carbonate, calcium acetate, calcium gluconate, and calcium ketoglutarate, is in large part dependent upon the patient tolerance …
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…meta-analyses, supplementation with calcium and vitamin D has been shown to reduce fracture risk in men and women. When considering vitamin D and calcium supplementation in patients with IBD, several important …
English Journal
- Crystal structures of hydrates of simple inorganic salts. II. Water-rich calcium bromide and iodide hydrates: CaBr2 · 9H2O, CaI2 · 8H2O, CaI2 · 7H2O and CaI2 · 6.5H2O.
- Hennings E, Schmidt H, Voigt W.
- Acta crystallographica. Section C, Structural chemistry.Acta Crystallogr C Struct Chem.2014 Sep 15;70(Pt 9):876-81. doi: 10.1107/S2053229614018002. Epub 2014 Aug 23.
- Single crystals of calcium bromide enneahydrate, CaBr(2) · 9H2O, calcium iodide octahydrate, CaI(2) · 8H2O, calcium iodide heptahydrate, CaI(2) · 7H2O, and calcium iodide 6.5-hydrate, CaI(2) · 6.5H2O, were grown from their aqueous solutions at and below room temperature according to the solid-li
- PMID 25186361
- Recyclable chemosensor for oxalate based on bimetallic complexes of a dinucleating bis(iminopyridine) ligand.
- Beattie JW1, White DS, Bheemaraju A, Martin PD, Groysman S.
- Dalton transactions (Cambridge, England : 2003).Dalton Trans.2014 Jun 7;43(21):7979-86. doi: 10.1039/c4dt00577e. Epub 2014 Apr 9.
- Herein we describe bimetallic di-nickel and di-copper complexes [Ni2(L)Br4] (1) and [Cu2(L)Br4(NCMe)2] (2) (L = (1E,1'E)-N,N'-(1,4-phenylenebis(methylene))bis(1-(6-(2,4,6-triisopropylphenyl)pyridin-2-yl)methanimine)) that bind oxalate intramolecularly to form [Ni2(L)Br2(C2O4)(NCMe)] (3) and [Cu2(L)B
- PMID 24715149
- Structural motifs of pre-nucleation clusters.
- Zhang Y1, Türkmen IR, Wassermann B, Erko A, Rühl E.
- The Journal of chemical physics.J Chem Phys.2013 Oct 7;139(13):134506. doi: 10.1063/1.4823497.
- Structural motifs of pre-nucleation clusters prepared in single, optically levitated supersaturated aqueous aerosol microparticles containing CaBr2 as a model system are reported. Cluster formation is identified by means of X-ray absorption in the Br K-edge regime. The salt concentration beyond the
- PMID 24116574
Japanese Journal
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- 自動車技術 = Journal of Society of Automotive Engineers of Japan 71(10), 82-86, 2017-10
- NAID 40021343868
- Effect of hyaluronan tetrasaccharides on epidermal differentiation in normal human epidermal keratinocytes
- Telekin Induces Apoptosis Associated with the Mitochondria-Mediated Pathway in Human Hepatocellular Carcinoma Cells
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