Copper(II)-ammonium sulfate

Copper(II)-ammonium sulfate ;
Names:	copper ammonium sulfate; copper Tutton's salt; ammonium copper schoenite; ammonium cupric sulfate; ACuSH;
Formula:	(NH4)2Cu(SO4)2 (anhydrous); (NH4)2Cu(SO4)2 · 6H2O (hexahydrate);
Molar mass:	291.746 g/mol (anhydrous); 399.835 g/mol (hexahydrate);
Density:	1.921 g/cm3 (hexahydrate);
Crystal system:	monoclinic (hexahydrate); a=6.3016 Å, b=12.3795 Å, c=9.2105 Åα=90°, β=106.118°, γ=90°;
Shapes:	https://en.crystalls.info/w/uploads/media/d/d0/Truncated_deformed_oblique_hexagonal_prism.json Truncated deformed oblique hexagonal prism 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/3/35/Deformed_tetragonal_bipyramid.json Deformed tetragonal bipyramid Template:Pinacoidal prismTemplate:Rhombohedron;
Color:	light-blue; blue;
Stability:	stable (hexahydrate)

Description

Inorganic compound, double salt of transitional metal copper, ammonium ion and inorganic sulfuric acid. From water solutions crystallizes as hexahydrate.

Precursors

Reaction between copper(II) and ammonium sulfates

Chemical equation:

(NH₄)₂SO₄ + CuSO₄ = (NH₄)₂Cu(SO₄)₂↓

For preparation of 100.00g of copper(II)-ammonium sulfate

hexahydratehexahydrate
anhydrous

а 62.45g of copper(II) sulfate

pentahydratepentahydrate
monohydrate
anhydrous

and 33.05g of ammonium 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. Filter precipitate and wash it wish small amount of ethanol or acetone, then filter the solution and use it for crystal growing.

Influence of impurities

Excess of one of sulfates leads to changing a shape of the final crystal. Excess of ammonium sulfate makes crystals cloudy/opaque. Small addition of zinc-ammonium sulfate or magnesium-ammonium sulfate changes crystal color to a lighter one. Compound could be mixed with Tutton's salts in any proportion, producing crystals with different colors and sometimes shapes. It is also possible to cover crystals with a layer of other Tutton's salt, e.g. by placing the crystal into s saturated solution of other salt, producing a crystal-in-crystal.

Influence of pH level

Addition of chemicals producing buffer solutions makes a huge impact on crystal shape and opacity. Examples of such compounds are ammonium dihydrophosphate and acetic acid.

Notes

Due to serious Jahn–Teller effect in a the hexaaquacopper(II) ion, this salt is very opaque.

Storage conditions

Keep in its original form or under several layers of varnish at average humidity and room temperature. Do not keep crystals near heaters.

Solubility

Insoluble in ethanol and acetone.

Gallery

Copper(II)-ammonium sulfateEugene Dudko, VKontakteEugene DudkoVKontakte
Copper(II)-ammonium sulfateRoman Kolmakov, VKontakteRoman KolmakovVKontakte
Copper(II)-ammonium sulfateRoman Kolmakov, VKontakteRoman KolmakovVKontakte
Crystal formed in solution of copper(II) sulfate and ammonium acetateCopper(II)-ammonium sulfate, Maxim Martinov, VKontakteMaxim MartinovVKontakte
Crystal formed in solution of copper(II) sulfate and ammonium acetateCopper(II)-ammonium sulfate, Maxim Martinov, VKontakteMaxim MartinovVKontakte
Crystal formed in solution of copper(II) sulfate and ammonium acetateCopper(II)-ammonium sulfate, Maxim Martinov, VKontakteMaxim MartinovVKontakte
Crystal formed in solution of copper(II) sulfate and ammonium acetateCopper(II)-ammonium sulfate, Maxim Martinov, VKontakteMaxim MartinovVKontakte
Crystal formed in solution of copper(II) sulfate and ammonium acetateCopper(II)-ammonium sulfate, Maxim Martinov, VKontakteMaxim MartinovVKontakte
Crystal formed in solution of copper(II) sulfate and ammonium acetateCopper(II)-ammonium sulfate, Maxim Martinov, VKontakteMaxim MartinovVKontakte
Mixture of copper(II)-ammonium and zinc-ammonium sulfates 1:1Copper(II)-ammonium sulfate, Stanislav Popov, VKontakteStanislav PopovVKontakte
Mixture of copper(II)-ammonium and zinc-ammonium sulfates 1:1Copper(II)-ammonium sulfate, Stanislav Popov, VKontakteStanislav PopovVKontakte
Mixed crystal of zinc-ammonium and copper(II)-ammonium sulfates in 4:1 ratioZinc-ammonium sulfate, Vicky Silviana, twitterVicky SilvianaTwitter

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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)

Ammonium compounds
Salts	Ammonium citrate ((NH₄)₃C₃H₅O(COO)₃) • Ammonium chloride (NH₄Cl) • Ammonium dichromate ((NH₄)₂Cr₂O₇) • Ammonium dihydrophosphate (NH₄H₂PO₄) • Ammonium nitrate (NH₄NO₃) • Ammonium perrhenate (NH₄ReO₄) • Ammonium sulfate ((NH₄)₂SO₄) • Ammonium succinate ((NH₄)₂C₄H₄O₄) • Ammonium tetraborate ((NH₄)₂B₄O₇) • Ammonium thiocyanate (NH₄NCS)
Double salts	Aluminum-ammonium sulfate (NH₄Al(SO₄)₂) • Calcium-ammonium nitrate (5Ca(NO₃)₂ · NH₄NO₃) • Chromium(II)-ammonium sulfate ((NH₄)₂Cr(SO₄)₂) • Chromium(III)-ammonium sulfate (NH₄Cr(SO₄)₂) • Cobalt(II)-ammonium sulfate ((NH₄)₂Co(SO₄)₂) • Cobalt(III)-ammonium sulfate (NH₄Co(SO₄)₂) • Copper(II)-ammonium sulfate ((NH₄)₂Cu(SO₄)₂) • Iron(II)-ammonium sulfate ((NH₄)₂Fe(SO₄)₂) • Iron(III)-ammonium sulfate (NH₄Fe(SO₄)₂) • Magnesium-ammonium sulfate ((NH₄)₂Mg(SO₄)₂) • Manganese(II)-ammonium sulfate ((NH₄)₂Mn(SO₄)₂) • Manganese(III)-ammonium sulfate (NH₄Mn(SO₄)₂) • Nickel-ammonium sulfate ((NH₄)₂Ni(SO₄)₂) • Sodium-ammonium sulfate (NaNH₄SO₄) • Vanadium(II)-ammonium sulfate ((NH₄)₂V(SO₄)₂) • Vanadium(III)-ammonium sulfate (NH₄V(SO₄)₂) • Zinc-ammonium sulfate ((NH₄)₂Zn(SO₄)₂)
Complexes	Ammines • Ammonium dioxalatocuprate(II) ((NH₄)₂[Cu(C₂O₄)₂]) • Ammonium pentachloroferrate(III) ((NH₄)₂[FeCl₅]) • Ammonium tetrachlorocuprate(II) ((NH₄)₂[CuCl₄]) • Ammonium trioxalatoferrate(III) ((NH₄)₃[Fe(C₂O₄)₃])

Copper compounds
Salts	Copper (Cu) • Copper(II) acetate (Cu(CH₃COO)₂) • Copper(II) dihydrophosphate (Cu(H₂PO₄)₂) • Copper(II) formate (Cu(COOH)₂) • Copper(II) lactate (Cu(C₃H₅O₃)₂) • Copper(II) nitrate (Cu(NO₃)₂) • Copper(II) sulfamate (Cu(NH₂SO₃)₂) • Copper(II) sulfate (CuSO₄) • Copper(II) tartrate (CuC₄H₄O₆) • Copper(II) chloride (CuCl₂)
Double salts	Copper-calcium acetate (CuCa(CH₃COO)₄) • Copper(II)-iron(II) sulfate ((Cu,Fe)SO₄) • Copper(II)-ammonium sulfate ((NH₄)₂Cu(SO₄)₂) • Copper(II)-potassium sulfate (K₂Cu(SO₄)₂)
Complexes	Dicarbonatocuprates • Dioxalatocuprates • Bis-thetramethylethylenediaminecopper(II) nitrate ([Cu((H₃CNCH₃)₂C₄H₈)](NO₃)₂) • Glycinecopper(II) sulfate ([Cu(NH₂CH₂COOH)]SO₄) • Copper(II) formate and urea complex (Cu(HCOO)₂ · 2CO(NH₂)₂) • Potassium dioxalatocuprate(II) (K₂[Cu(C₂O₄)₂]) • Sodium dioxalatocuprate(II) (Na₂[Cu(C₂O₄)₂]) • Sodium dicarbonatocuprate(II) (Na₂[Cu(CO₃)₂]) • Tetraamminecopper(II) sulfate ([Cu(NH₃)₄]SO₄) • Tetrachlorocuprates • Tris(hydroxymethyl)methanoaminecopper(II) sulfate ([Cu(NH₂C(CH₂OH)₃)₄]SO₄)

Copper(II)-ammonium sulfate
Names:	copper ammonium sulfate copper Tutton's salt ammonium copper schoenite ammonium cupric sulfate ACuSH
Formula:	(NH₄)₂Cu(SO₄)₂ (anhydrous) (NH₄)₂Cu(SO₄)₂ · 6H₂O (hexahydrate)
Molar mass:	291.746 g/mol (anhydrous) 399.835 g/mol (hexahydrate)
Density:	1.921 g/cm³ (hexahydrate)
Crystal system:	monoclinic (hexahydrate) a=6.3016 Å, b=12.3795 Å, c=9.2105 Åα=90°, β=106.118°, γ=90°
Shapes:	Truncated deformed oblique hexagonal prism Truncated deformed hexagonal prism Deformed tetragonal bipyramid Template:Pinacoidal prism Template:Rhombohedron
Color:	light-blue blue
Stability:	stable (hexahydrate)