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Manganese(II)-potassium sulfate

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   Manganese(II)-potassium sulfate   
Names: Manganese potassium sulfate
Manganese Tutton's salt
potassium manganese schoenite
KMnSH
KMSH
Formula: K2Mn(SO4)2 (anhydrous)
K2Mn(SO4)2 · 6H2O (hexahydrate)
Molar mass: 325.256 g/mol (anhydrous)
433.345 g/mol (hexahydrate)
Shapes:
https://en.crystalls.info/w/uploads/media/9/9a/Truncated_deformed_hexagonal_prism.json
Truncated deformed hexagonal prism
https://en.crystalls.info/w/uploads/media/d/d0/Truncated_deformed_oblique_hexagonal_prism.json
Truncated deformed oblique hexagonal prism

Color: pink
Stability: erodes (hexahydrate)
hygroscopic (anhydrous)
Hardness: relatively strong

Description

Inorganic compound, double salt of transitional metal manganese, alkaline metal potassium and inorganic sulfuric acid. From water solutions crystallizes as hexahydrate.

Precursors

Reaction between manganese(II) and potassium sulfates

Chemical equation:

K2SO4 + MnSO4 = K2Mn(SO4)2↓


For preparation of 100.00g of manganese(II)-potassium sulfate hexahydrate а 55.63g of manganese(II) sulfate pentahydrate and 40.21g of potassium sulfate is required.

Dissolve compounds in hot water apart and then mix solutions into one container with intense stirring. Cooling or evaporation of a solution will cause double salt crystallyzation.

Due to the high solubility of the product and the heat generated during dissolution, compounds should be added carefully and less amount of water is recommended..

Influence of impurities

Excess of one of sulfates leads to changing a shape of the final crystal. Excess of potassium sulfate makes crystals cloudy/opaque. Small addition of zinc-potassium sulfate changes crystal color to a lighter one, but adding a large amounts could lead to changing the crystal shape. It is also possible to cover crystals with a layer of other Tutton's salts, by placing the crystals into s saturated solution of other salt, producing a crystal-in-crystal.

Storage conditions

For crystal storing use hermetic vessel with small amount of saturated solution at the bottom or place wadding moistened with such solution. You can use such alternatives as vessel with vaseline or vegetable oil, organic non-hygroscopic solvent (kerosene, benzine or paraffin). Also you can use acrylate polymer or another kinds of solidifying plastic.

Solubility

Temperatureгр/100,00 гр water
25°C298.15 K <br />77 °F <br />536.67 °R <br />~60


Gallery


Navigation


   Sulfates
Simple

Aluminum sulfate (Al2(SO4)3) • Ammonium sulfate ((NH4)2SO4) • Calcium sulfate (CaSO4) • Cadmium sulfate (CdSO4) • Cerium(III) sulfate (Ce2(SO4)3) • Cerium(IV) sulfate (Ce(SO4)2) • Chromium(III) sulfate (Cr2(SO4)3) • Cobalt(II) sulfate (CoSO4) • Copper(II) sulfate (CuSO4) • Gadolinium sulfate (Gd2(SO4)3) • Holmium sulfate (Ho2(SO4)3) • Hydrazine sulfate (N2H4 · H2SO4) • Iron(II) sulfate (FeSO4) • Iron(III) sulfate (Fe2(SO4)3) • Lanthanum sulfate (La2(SO4)3) • Lithium sulfate (Li2SO4) • Magnesium sulfate (MgSO4) • Manganese(II) sulfate (MnSO4) • Neodymium sulfate (Nd2(SO4)3) • Nickel sulfate (NiSO4) • Potassium sulfate (K2SO4) • Praseodymium(III) sulfate (Pr2(SO4)3) • Rubidium sulfate (Rb2SO4) • Sodium hydrosulfate (NaHSO4) • Sodium sulfate (Na2SO4) • Yttrium sulfate (Gd2(SO4)3) • Zinc sulfate (ZnSO4)

Alums

Aluminum-ammonium sulfate (NH4Al(SO4)2) • Aluminum-potassium sulfate (KAl(SO4)2) • Chromium(III)-ammonium sulfate (NH4Cr(SO4)2) • Chromium(III)-potassium sulfate (KCr(SO4)2) • Cobalt(III)-ammonium sulfate (NH4Co(SO4)2) • Indium(III)-potassium sulfate (KIn(SO4)2) • Iron(III)-ammonium sulfate (NH4Fe(SO4)2) • Iron(III)-potassium sulfate (KFe(SO4)2) • Manganese(III)-ammonium sulfate (NH4Mn(SO4)2) • Vanadium(III)-ammonium sulfate (NH4V(SO4)2)

Tutton's salts

Chromium(II)-ammonium sulfate ((NH4)2Cr(SO4)2) • Cobalt(II)-ammonium sulfate ((NH4)2Co(SO4)2) • Cobalt(II)-potassium sulfate (K2Co(SO4)2) • Copper(II)-ammonium sulfate ((NH4)2Cu(SO4)2) • Copper(II)-potassium sulfate (K2Cu(SO4)2) • Iron(II)-ammonium sulfate ((NH4)2Fe(SO4)2) • Iron(II)-potassium sulfate (K2Fe(SO4)2) • Magnesium-ammonium sulfate ((NH4)2Mg(SO4)2) • Magnesium-potassium sulfate (K2Mg(SO4)2) • Magnesium-potassium sulfate-chromate (K2CrO4 · MgSO4) • Manganese(II)-ammonium sulfate ((NH4)2Mn(SO4)2) • Manganese(II)-potassium sulfate (K2Mn(SO4)2) • Nickel-ammonium sulfate ((NH4)2Ni(SO4)2) • Nickel-potassium sulfate (K2Ni(SO4)2) • Vanadium(II)-ammonium sulfate ((NH4)2V(SO4)2) • Zinc-ammonium sulfate ((NH4)2Zn(SO4)2) • Zinc-potassium sulfate (K2Zn(SO4)2) •

Double salts

Copper(II)-iron(II) sulfate ((Cu,Fe)SO4) • Iron(II)-magnesium sulfate ((Fe,Mg)SO4) • Lithium-potassium sulfate (KLiSO4) • Sodium-ammonium sulfate (NaNH4SO4) • Zinc-sodium sulfate (Na2Zn(SO4)2) •

Adducts

Triglycine sulfate ((NH2CH2COOH)3 · H2SO4) • Glutamic acid sulfate (C5H9NO4 · H2SO4)

Complexes

Cerium(III) sulfocerate(IV) (Ce4[Ce(SO4)4]3) • Glycinecopper(II) sulfate ([Cu(NH2CH2COOH)]SO4) • Hexakarbamatzinc sulfate ([(CON2H4)6Zn]SO4) • Tetraamminecopper(II) sulfate ([Cu(NH3)4]SO4) • Tris(hydroxymethil)methanoaminecopper(II) sulfate ([Cu(NH2C(CH2OH)3)4]SO4)


   Potassium compounds
Salts

Potassium bromate (KBrO3) • Potassium bromide (KBr) • Potassium chlorate (KClO3) • Potassium chloride (KCl) • Potassium chromate (K2CrO4) • Potassium dihydrophosphate (KH2PO4) • Potassium dichromate (K2Cr2O7) • Potassium iodide (KI) • Potassium hydrofluoride (KHF2) • Potassium hydrophosphate (K2HPO4) • Potassium hydrophthalate (KC8H6O4) • Potassium metavanadate (KVO3) • Potassium nitrate (KNO3) • Potassium sulfate (K2SO4) • Potassium thiocyanate (KNCS)

Double salts

Aluminum-potassium sulfate (KAl(SO4)2) • Antimony(III)-potassium tartrate (K2Sb2(C4H2O6)2) • Chromium(III)-potassium sulfate (KCr(SO4)2) • Cobalt(II)-potassium sulfate (K2Co(SO4)2) • Copper(II)-potassium sulfate (K2Cu(SO4)2) • Indium(III)-potassium sulfate (KIn(SO4)2) • Iron(II)-potassium sulfate (K2Fe(SO4)2) • Iron(III)-potassium sulfate (KFe(SO4)2) • Lithium-potassium sulfate (KLiSO4) • Magnesium-potassium sulfate (K2Mg(SO4)2) • Magnesium-potassium sulfate-chromate (K2CrO4 · MgSO4) • Manganese(II)-potassium sulfate (K2Mn(SO4)2) • Nickel-potassium sulfate (K2Ni(SO4)2) • Potassium-sodium tartrate (KNaC4H4O6) • Vanadium(III)-ammonium sulfate (NH4V(SO4)2)

Complexes

Potassium dioxalatocuprate(II) (K2[Cu(C2O4)2]) • Potassium hexanitrocobaltate(III) (K3[Co(NO2)6]) • Potassium hexachlororhodiate(III) (K3[RhCl6]) • Potassium hexacyanocobaltate(III) (K3[Co(CN)6]) • Potassium hexacyanoferrate(II) (K4[Fe(CN)6]) • Tripotassium-sodium hexacyanoferrate(II) (K3Na[Fe(CN)6]) • Potassium hexacyanoferrate(III) (K3[Fe(CN)6]) • Potassium hexacyanochromate(III) (K3[Co(CN)6]) • Potassium tetraiodobismuthate (К[BiI4]) • Potassium tetraiodomercurate(II) (K2[HgI4]) • Potassium trioxalatoaluminate (K3[Al(C2O4)3]) • Potassium trioxalatocobaltate(III) (K3[Co(C2O4)3]) Potassium trioxalatoferrate(III) (K3[Fe(C2O4)3]) • Potassium-sodium trioxalatoferrate(III) (K5Na[Fe(C2O4)3]2) • Dipotassium-sodium trioxalatoferrate(III) (K2Na[Fe(C2O4)3]) • Potassium trioxalatochromate(III) (K3[Cr(C2O4)3])


   Manganese compounds
Salts

Manganese(II) acetate (Mn(CH3COO)2) • Manganese(II) chloride (MnCl2) • Manganese(II) formate (Mn(COOH)2) • Manganese(II) sulfate (MnSO4)

Double salts

Cerium(III)-cobalt-manganese nitrate (3(Co,Mn)(NO3)2 · 2Ce(NO3)3) • Cerium(III)-manganese nitrate (3Mn(NO3)2 · 2Ce(NO3)3) • Manganese(II)-ammonium sulfate ((NH4)2Mn(SO4)2) • Manganese(III)-ammonium sulfate (NH4Mn(SO4)2) • Manganese(II)-potassium sulfate (K2Mn(SO4)2)


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