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Strontium chloride

Chemical structure of strontium chloride

Strontium chloride is an inorganic compound with formula SrCl2.

Table of contents
  1. 1Names
  2. 2Formulae and structures
  3. 3Properties
  4. 4Constituents
  5. 5Thermodynamic properties
  6. 6Solubility
  7. 7Hazards
  8. 8Preparations
  9. 9Chemical reactions
  10. 10References
  11. 11Related substances
  12. 12Related categories

Names

List of substance names

Nomenclature
Name
Typical name
Strontium chloride
Compositional nomenclature
Strontium chloride
Strontium dichloride

Formulae and structures

List of formulae

Formula name
Formula
Typical formula
SrCl2
Compositional formula
SrCl2
Structural formula
Chemical structure of strontium chloride
Lewis structure
Lewis structure of strontium chloride
Colored Lewis structure
Colored Lewis structure of strontium chloride

Properties

List of substance properties

Item
Value
Name
Strontium chloride
Formula
SrCl2
Appearance
Colorless solid
Odor
Odorless
Molar mass
158.52 g/mol
Density
3.052 g/cm3[1][2]
Solid
Melting point
874 °C[1][2]
Boiling point
1250 °C[1][2]

Constituents

Constituent ions

IonNameCharge numberNumber
Sr2+Strontium ion21
ClChloride ion-12

Constituent atoms

AtomNameOxidation stateNumber
SrStrontium+21
ClChlorine−12

Ratio of atoms

AtomAtomic weightNumberAtomic ratioWeight ratio
Sr87.62133.33%55.27%
Cl35.45266.67%44.73%
SrClAtomic ratio
SrClWeight ratio

Thermodynamic properties

Phase transition properties

Item
Value
Enthalpy of fusion
17.5 kJ · mol−1[1]
at 874°C
16.22 kJ · mol−1[2]
at 874°C
Enthalpy of vaporization
248.1 kJ · mol−1[1]
at 1250°C
Enthalpy of vaporization at 25°C
356 kJ · mol−1[1]
Enthalpy of other transition

Standard thermodynamic properties

State
Standard enthalpy
of formation
ΔfH°
kJ · mol−1
Standard Gibbs
energy of
formation
ΔfG°
kJ · mol−1
Standard
molar entropy
S°
J · K−1 · mol−1
Standard molar
heat capacity at
constant pressure
Cp°
J · K−1 · mol−1
Crystalline solid
α
−828.9[3]−781.1[3]114.85[3]75.60[3]
Gas−485.8[3]−496.2[3]310.81[3]55.77[3]
Ionized aqueous solution−880.10[3]−821.91[3]80.3[3]
Crystalline solid
1 hydrate
−1136.8[3]−1036.3[3]172.[3]120.1[3]
Crystalline solid
2 hydrate
−1438.0[3]−1281.8[3]218.[3]160.2[3]
Crystalline solid
6 hydrate
−2623.8[3]−2240.92[3]390.8[3]

Solubility

Qualitative solubility

Reactive
Miscible
Very soluble
Soluble
Slightly soluble
Very slightly soluble
Insoluble

Solubility in water (g/100 g)[1]

0°C10°C20°C30°C40°C60°C80°C100°C
43.547.752.958.765.381.890.5101

Solubility in water (g/100 g)[4]

-20°C0°C10°C20°C25°C30°C40°C50°C60°C70°C80°C100°C120°C140°C160°C180°C
35.143.547.752.955.858.765.372.481.885.990.5100.8112.8125.2141163.1

Solubility in methanol (g/100 g, Hexahydrate)[4]

6°C
63.3

Solubility in formic acid (g/100 g, 95%)[4]

19°C
23.8

Solubility in ethanol (g/100 g, Hexahydrate)[4]

6°C
3.8

Solubility in hydrazine (g/100 mL)[4]

20°C
8

Solubility curve (g/100 g)

0°C20°C40°C60°C80°C100°CTemperature (°C)050100150200Solubility (g/100 g)

Solubility curve (g/100 mL)

0°C20°C40°C60°C80°C100°CTemperature (°C)02468Solubility (g/100 mL)

Hazards

GHS label[5]

Item
Value

Physical hazards[5]

Health hazards[5]

Environmental hazards[5]

Preparations

Reaction of metal and nonmetal

The reaction of strontium and chlorine yields strontium chloride.

Reaction of strontium and chlorine
ΔrG−781.1 kJ/mol
K6.96 × 10136
pK−136.84

Reaction of acid and base

The reaction of hydrogen chloride and strontium hydroxide yields strontium chloride and water.

Reaction of basic oxide and acid

The reaction of basic oxide and acid can yield strontium chloride.

Reaction of salt of weak acid and strong acid

The reaction of salt of weak acid and strong acid can yield strontium chloride.

Reaction of salt of weak base and strong base

The reaction of salt of weak base and strong base can yield strontium chloride.

Reaction of active metal and acid

The reaction of strontium and hydrogen chloride yields strontium chloride and hydrogen.

Chemical reactions

Electrolytic dissociation

Electrolytic dissociation of strontium chloride yields strontium ion and chloride ion.

Electrolytic dissociation of strontium chloride
ΔrG−40.8 kJ/mol
K1.41 × 107
pK−7.15
SrCl2Strontium chloride
Sr2+Strontium ion + 2ClChloride ion

Reaction with nonvolatile acid

The reaction of strontium chloride and nonvolatile acid yields salt of non volatile acid and hydrogen chloride.

Reaction with reducing species

The reaction of sodium and strontium chloride yields sodium chloride and strontium.

Reaction with oxidizing species

The reaction of strontium chloride and oxidizing species yields a variety of products.

Reaction with oxidizing species under acidic condition

The reaction of strontium chloride, oxidizing species, and hydrogen ion yields a variety of products.

Reaction of strontium chloride and potassium permanganate under acidic condition
ΔrG−146.6 kJ/mol
K4.82 × 1025
pK−25.68
5SrCl2Strontium chloride + 2KMnO4Potassium permanganate + 16H+Hydrogen ion
🔥
5Sr2+Strontium ion + 5Cl2Chlorine + 2Mn2+Manganese(II) ion + 2K+Potassium ion + 8H2OWater
Reaction of strontium chloride and potassium permanganate under acidic condition
ΔrG−146.6 kJ/mol
K4.82 × 1025
pK−25.68
6SrCl2Strontium chloride + 2KMnO4Potassium permanganate + 16H+Hydrogen ion
🔥
6Sr2+Strontium ion + 5Cl2Chlorine + 2Mn2+Manganese(II) ion + 2KClPotassium chloride + 8H2OWater

Reaction with oxidizing species under neutral condition

The reaction of strontium chloride, oxidizing species, and water yields a variety of products.

Precipitation reaction

When a certain chemical species is present in aqueous solution, it reacts with strontium chloride to form a precipitate.

Electrolysis of aqueous solution

Electrolysis of aqueous strontium chloride yields a variety of products.

Electrolysis of water
ΔrG474.258 kJ/mol
K0.82 × 10−83
pK83.09

Molten salt electrolysis

Molten salt electrolysis of strontium chloride yields strontium and chlorine.

References

List of references

  1. 1
  2. 2
    John R. Rumble Jr, David R. Lide, Thomas J. Bruno (2019)
    CRC Handbook of Chemistry and Physics 100th Edition
    CRC Press

  3. 3
  4. 4
    Atherton Seidell (1919)
    Solubilities of Inorganic and Organic Compounds: A Compilation of Quantitative Solubility Data From the Periodical Literature
    D. Van Nostrand Company

  5. 5