calcium bromide

{{chembox

| Verifiedfields = changed

| Watchedfields = changed

| verifiedrevid = 443495466

| Name = Calcium bromide

| IUPACName = Calcium bromide

| OtherNames = Calcium dibromide

| ImageFile = Hydrophilite.GIF

| ImageSize =

| Section1 = {{Chembox Identifiers

| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}

| ChemSpiderID = 23010

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = 87CNY2EEBH

| InChI = 1/2BrH.Ca/h2*1H;/q;;+2/p-2

| ChEBI_Ref = {{ebicite|correct|EBI}}

| ChEBI = 31338

| SMILES = Br[Ca]Br

| SMILES2 = [Ca+2].[Br-].[Br-]

| InChIKey = WGEFECGEFUFIQW-NUQVWONBAA

| StdInChI_Ref = {{stdinchicite|correct|chemspider}}

| StdInChI = 1S/2BrH.Ca/h2*1H;/q;;+2/p-2

| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}

| StdInChIKey = WGEFECGEFUFIQW-UHFFFAOYSA-L

| CASNo = 7789-41-5

| CASNo_Ref = {{cascite|correct|CAS}}

| CASNo_Comment = anhydrous

| CASNo2 = 22208-73-7

| CASNo2_Ref = {{cascite|changed|??}}

| CASNo2_Comment = dihydrate

| PubChem = 24608

| RTECS = EV9328000

| EINECS = 232-164-6

}}

| Section2 = {{Chembox Properties

| Formula = CaBr₂

| MolarMass = 199.89 g/mol (anhydrous)
235.98 g/mol (dihydrate)

| Appearance = anhydrous is hygroscopic colorless crystals
sharp saline taste

| Density = 3.353 g/cm³

| Solubility = 125 g/100 mL (0 °C)
143 g/100 mL (20 °C)
312 g/100 mL (100 °C)

| Solvent = alcohol, acetone

| SolubleOther = soluble

| MeltingPtC = 730

| BoilingPtC = 1815

| BoilingPt_notes = (anhydrous)
810 °C (dihydrate)

| pKa = 9

| MagSus = −73.8·10⁻⁶ cm³/mol

}}

| Section3 = {{Chembox Structure

| MolShape =

| Dipole =

| CrystalStruct = rhomboid

}}

| Section4 = {{Chembox Thermochemistry

| DeltaHf = −647.9 kJ/mol

| DeltaGf = −656.1 kJ/mol

| Entropy = 130 J/mol K

| HeatCapacity = 75 J/mol K

}}

| Section7 = {{Chembox Hazards

| ExternalSDS =

| MainHazards =

| FlashPt =

| NFPA-H = 1

| NFPA-F = 0

| NFPA-R = 0

| NFPA-S =

| LD50 = 4100 mg/kg (rat, oral)
1580 mg/kg (mouse, subcutaneous)

}}

| Section8 = {{Chembox Related

| OtherAnions = Calcium fluoride
Calcium chloride
Calcium iodide

| OtherCations = Beryllium bromide
Magnesium bromide
Strontium bromide
Barium bromide
Radium bromide

}}

}}

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.