Manganese(II) sulfate
Manganese(II) sulfate is an inorganic compound with formula MnSO4.
- 1Names
- 2Formulae and structures
- 3Properties
- 4Constituents
- 5Thermodynamic properties
- 6Solubility
- 7Hazards
- 8Preparations
- 9Chemical reactions
- 10References
- 11Related substances
- 12Related categories
Names
List of substance names
- Typical name
- Manganese(II) sulfate
- Compositional nomenclature
- Manganese(II) sulfate
- Manganese(2+) sulfate
- Additive nomenclature
- Manganese(2+) tetraoxidosulfate(2−)
- Other names
- Manganese sulfate
- Manganous sulfate
Formulae and structures
List of formulae
- Typical formula
- MnSO4
- Compositional formula
- MnSO4
- Structural formula
- Other structural formulas
- Lewis structure
- Colored Lewis structure
Properties
List of substance properties
- Name
- Manganese(II) sulfate
- Formula
- MnSO4
- Appearance
- Colorless solid
- Pink solid, 4 hydrate
- Odor
- Odorless
- Molar mass
- 150.99 g/mol
Constituents
Constituent ions
| Ion | Name | Charge number | Number |
|---|---|---|---|
| Mn2+ | Manganese(II) ion | 2 | 1 |
| SO42− | Sulfate ion | -2 | 1 |
Constituent atoms
| Atom | Name | Oxidation state | Number |
|---|---|---|---|
| Mn | Mangenese | +2 | 1 |
| S | Sulfur | +6 | 1 |
| O | Oxygen | −2 | 4 |
Ratio of atoms
| Atom | Atomic weight | Number | Atomic ratio | Weight ratio |
|---|---|---|---|---|
| Mn | 54.938 | 1 | 16.67% | 36.38% |
| S | 32.06 | 1 | 16.67% | 21.23% |
| O | 15.999 | 4 | 66.67% | 42.38% |
Thermodynamic properties
Phase transition properties
- Enthalpy of fusion
- –
- Enthalpy of vaporization
- –
- Enthalpy of vaporization at 25°C
- –
- 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 | −1065.25[3] | −957.36[3] | 112.1[3] | 100.50[3] |
| Ionized aqueous solution | −1130.1[3] | −972.7[3] | −53.6[3] | −243.[3] |
| Un−ionized aqueous solution | −1115.9[3] | −985.7[3] | 36.4[3] | – |
| Crystalline solid 1 hydrate α | −1376.5[3] | – | – | – |
| Crystalline solid 1 hydrate β | −1348.1[3] | – | – | – |
| Crystalline solid 4 hydrate | −2258.1[3] | – | – | – |
| Crystalline solid 5 hydrate | −2553.1[3] | – | – | 326.[3] |
| Crystalline solid 7 hydrate | −3139.3[3] | – | – | – |
Solubility
Qualitative solubility
Solubility in water (g/100 g)[4]
| -10°C | 0°C | 5°C | 9°C | 15°C | 16°C | 18.5°C | 25°C | 30°C | 39.9°C | 41.4°C | 60°C | 70°C | 80°C | 90°C | 100°C |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 47.96 | 53.23 | 58.06 | 59.19 | 61.08 | 63.94 | 64.19 | 65.32 | 66.44 | 68.81 | 60.87 | 55 | 52 | 48 | 42.5 | 34 |
Solubility in water (g/100 g)[1]
| 0°C | 10°C | 20°C | 30°C | 40°C | 60°C | 80°C | 90°C | 100°C |
|---|---|---|---|---|---|---|---|---|
| 52.9 | 59.7 | 62.9 | 62.9 | 60 | 53.6 | 45.6 | 40.9 | 35.3 |
Solubility in hydrazine (g/100 mL)[4]
| 20°C |
|---|
| 1 |
Solubility in ethylene glycol (g/100 g solution)[4]
| 25°C |
|---|
| 0.5 |
Solubility curve (g/100 g)
Solubility curve (g/100 mL)
Solubility curve (g/100 g solution)
Hazards
GHS label[5]
- Hazard pictograms
- Signal word
- Danger
- Hazard statements
- H302: Harmful if swallowed
- H341: Suspected of causing genetic defects
- H360: May damage fertility or the unborn child
- H372: Causes damage to organs through prolonged or repeated exposure
- H372: Causes damage to nervous system through prolonged or repeated exposure
- H372: Causes damage to respiratory system through prolonged or repeated exposure
- H402: Harmful to aquatic life
- H412: Harmful to aquatic life with long lasting effects
Physical hazards[5]
Health hazards[5]
Environmental hazards[5]
Preparations
Reaction of acid and base
The reaction of sulfuric acid and manganese(II) hydroxide yields manganese(II) sulfate and water.
Reaction of base and acidic oxide
The reaction of manganese(II) hydroxide and sulfur trioxide yields manganese(II) sulfate and water.
Reaction of basic oxide and acid
The reaction of manganese(II) oxide and sulfuric acid yields manganese(II) sulfate and water.
Reaction of basic oxide and acidic oxide
The reaction of manganese(II) oxide and sulfur trioxide yields manganese(II) sulfate.
Reaction of salt of weak acid and strong acid
The reaction of salt of weak acid and strong acid can yield manganese(II) sulfate.
Reaction of active metal and acid
The reaction of and sulfuric acid yields manganese(II) sulfate and .
Reaction of nonmetal and hydroxide base
The reaction of and manganese(II) hydroxide yields manganese(II) sulfate, manganese(II) sulfide, and water.
Chemical reactions
Electrolytic dissociation
Electrolytic dissociation of manganese(II) sulfate yields manganese(II) ion and sulfate ion.
Reaction with strong base
The reaction of manganese(II) sulfate and strong base yields salt of strong base and manganese(II) hydroxide.
Reaction with dehydrating acid
The reaction of manganese(II) sulfate and phosphoric acid yields manganese(II) phosphate, sulfur trioxide, and water.
Reaction with reducing species
The reaction of reducing species and manganese(II) sulfate yields a variety of products.
Reaction with oxidizing species
The reaction of manganese(II) sulfate and oxidizing species yields a variety of products.
Reaction with oxidizing species under acidic condition
The reaction of manganese(II) sulfate, oxidizing species, and hydrogen ion yields a variety of products.
Reaction with oxidizing species under neutral condition
The reaction of manganese(II) sulfate, oxidizing species, and water yields a variety of products.
Reaction with reducible species
The reaction of manganese(II) sulfate and iron(III) oxide yields manganese(III) oxide and iron(II) sulfate.
Reaction with oxidizable species
The reaction of oxidizable species and manganese(II) sulfate yields a variety of products.
Precipitation reaction
When a certain chemical species is present in aqueous solution, it reacts with manganese(II) sulfate to form a precipitate.
Decomposition
Decomposition of manganese(II) sulfate yields manganese(II) oxide and sulfur trioxide.
Electrolysis of aqueous solution
Electrolysis of aqueous manganese(II) sulfate yields a variety of products.
Molten salt electrolysis
Molten salt electrolysis of manganese(II) sulfate yields a variety of products.
References
List of references
- 1James G. Speight (2017)Lange's Handbook of Chemistry, 17th editionMcGraw Hill Education
- ^ Density, 3.25 g/cm3 - p.52
- ^ Density, 2.95 g/cm3 - p.52
- ^ Density, 2.09 g/cm3 - p.52
- ^ Melting point, 700 °C - p.52
- ^ Melting point, 400–450 °C - p.52
- ^ Melting point, 280 °C - p.52
- ^ Boiling point, 850 °C - p.52
- ^ Qualitative solubility, Insoluble in ethanol - p.52
- ^ Solubility in Water (g/100 g), See the table - p.338
- 2John R. Rumble Jr, David R. Lide, Thomas J. Bruno (2019)CRC Handbook of Chemistry and Physics 100th EditionCRC Press
- ^ Density, 3.25 g/cm3 - p.4-46
- ^ Melting point, 700 °C - p.4-46
- ^ Boiling point, 850 °C - p.4-46
- 3Janiel J. Reed (1989)The NBS Tables of Chemical Thermodynamic Properties: Selected Values for Inorganic and C1 and C2 Organic Substances in SI UnitsNational Institute of Standards and Technology (NIST)
- ^ ΔfH°, -1065.25 kJ · mol−1
- ^ ΔfG°, -957.36 kJ · mol−1
- ^ S°, 112.1 J · K−1 · mol−1
- ^ Cp°, 100.50 J · K−1 · mol−1
- ^ ΔfH°, -1130.1 kJ · mol−1
- ^ ΔfG°, -972.7 kJ · mol−1
- ^ S°, -53.6 J · K−1 · mol−1
- ^ Cp°, -243. J · K−1 · mol−1
- ^ ΔfH°, -1115.9 kJ · mol−1
- ^ ΔfG°, -985.7 kJ · mol−1
- ^ S°, 36.4 J · K−1 · mol−1
- ^ ΔfH°, -1376.5 kJ · mol−1
- ^ ΔfH°, -1348.1 kJ · mol−1
- ^ ΔfH°, -2258.1 kJ · mol−1
- ^ ΔfH°, -2553.1 kJ · mol−1
- ^ Cp°, 326. J · K−1 · mol−1
- ^ ΔfH°, -3139.3 kJ · mol−1
- 4Atherton Seidell (1919)Solubilities of Inorganic and Organic Compounds: A Compilation of Quantitative Solubility Data From the Periodical LiteratureD. Van Nostrand Company
- 5Chemical Management CenterGHS Classification ResultsNational Institute of Technology and Evaluation
