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Below are the values of the Ksp product constant for the most common salts
We hope they will prove usefull to you. If there are any other salts for which you know the value of the constant, please let us know and we will update the table.
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| Compound | Formula | Ksp (at 25 oC) |
| Aluminium hydroxide | Al(OH)3 | 3x10-34 |
| Aluminium phosphate | AlPO4 | 9.84 x 10-21 |
| Barium bromate | Ba(BrO3)2 | 2.43 x 10-4 |
| Barium carbonate | BaCO3 | 2.58 x 10-9 |
| Barium chromate | BaCrO4 | 1.17 x 10-10 |
| Barium fluoride | BaF2 | 1.84 x 10-7 |
| Barium hydroxide octahydrate | Ba(OH)2 x 8H2O | 2.55 x 10-4 |
| Barium iodate | Ba(IO3)2 | 4.01 x 10-9 |
| Barium iodate monohydrate | Ba(IO3)2 x H2O | 1.67 x 10-9 |
| Barium molybdate | BaMoO4 | 3.54 x 10-8 |
| Barium nitrate | Ba(NO3)2 | 4.64 x 10-3 |
| Barium selenate | BaSeO4 | 3.40 x 10-8 |
| Barium sulfate | BaSO4 | 1.08 x 10-10 |
| Barium sulfite | BaSO3 | 5.0 x 10-10 |
| Beryllium hydroxide | Be(OH)2 | 6.92 x 10-22 |
| Bismuth arsenate | BiAsO4 | 4.43 x 10-10 |
| Bismuth iodide | BiI | 7.71 x 10-19 |
| Cadmium arsenate | Cd3(AsO4)2 | 2.2 x 10-33 |
| Cadmium carbonate | CdCO3 | 1.0 x 10-12 |
| Cadmium fluoride | CdF2 | 6.44 x 10-3 |
| Cadmium hydroxide | Cd(OH)2 | 7.2 x 10-15 |
| Cadmium iodate | Cd(IO3)2 | 2.5 x 10-8 |
| Cadmium oxalate trihydrate | CdC2O4 x 3H2O | 1.42 x 10-8 |
| Cadmium phosphate | Cd3(PO4)2 | 2.53 x 10-33 |
| Cadmium sulfide | CdS | 1 x 10-27 |
| Caesium perchlorate | CsClO4 | 3.95 x 10-3 |
| Caesium periodate | CsIO4 | 5.16 x 10-6 |
| Calcium carbonate (calcite) | CaCO3 | 3.36 x 10-9 |
| Calcium carbonate (aragonite) | CaCO3 | 6.0 x 10-9 |
| Calcium fluoride | CaF2 | 3.45 x 10-11 |
| Calcium hydroxide | Ca(OH)2 | 5.02 x 10-6 |
| Calcium iodate | Ca(IO3)2 | 6.47 x 10-6 |
| Calcium iodate hexahydrate | Ca(IO3)2 x 6H2O | 7.10 x 10-7 |
| Calcium molybdate | CaMoO | 1.46 x 10-8 |
| Calcium oxalate monohydrate | CaC2O4 x H2O | 2.32 x 10-9 |
| Calcium phosphate | Ca3(PO4)2 | 2.07 x 10-33 |
| Calcium sulfate | CaSO4 | 4.93 x 10-5 |
| Calcium sulfate dihydrate | CaSO4 x 2H2O | 3.14 x 10-5 |
| Calcium sulfate hemihydrate | CaSO4 x 0.5H2O | 3.1 x 10-7 |
| Cobalt(II) arsenate | Co3(AsO4)2 | 6.80 x 10-29 |
| Cobalt(II) carbonate | CoCO3 | 1.0 x 10-10 |
| Cobalt(II) hydroxide (blue) | Co(OH)2 | 5.92 x 10-15 |
| Cobalt(II) iodate dihydrate | Co(IO3)2 x 2H2O | 1.21 x 10-2 |
| Cobalt(II) phosphate | Co3(PO4)2 | 2.05 x 10-35 |
| Cobalt(II) sulfide (alpha) | CoS | 5 x 10-22 |
| Cobalt(II) sulfide (beta) | CoS | 3 x 10-26 |
| Copper(I) bromide | CuBr | 6.27 x 10-9 |
| Copper(I) chloride | CuCl | 1.72 x 10-7 |
| Copper(I) cyanide | CuCN | 3.47 x 10-20 |
| Copper(I) hydroxide | Cu2O | 2 x 10-15 |
| Copper(I) iodide | CuI | 1.27 x 10-12 |
| Copper(I) thiocyanate | CuSCN | 1.77 x 10-13 |
| Copper(II) arsenate | Cu3(AsO4)2 | 7.95 x 10-36 |
| Copper(II) hydroxide | Cu(OH)2 | 4.8 x 10-20 |
| Copper(II) iodate monohydrate | Cu(IO3)2 x H2O | 6.94 x 10-8 |
| Copper(II) oxalate | CuC2O4 | 4.43 x 10-10 |
| Copper(II) phosphate | Cu3(PO4)2 | 1.40 x 10-37 |
| Copper(II) sulfide | CuS | 8 x 10-37 |
| Europium(III) hydroxide | Eu(OH)3 | 9.38 x 10-27 |
| Gallium(III) hydroxide | Ga(OH)3 | 7.28 x 10-36 |
| Iron(II) carbonate | FeCO3 | 3.13 x 10-11 |
| Iron(II) fluoride | FeF2 | 2.36 x 10-6 |
| Iron(II) hydroxide | Fe(OH)2 | 4.87 x 10-17 |
| Iron(II) sulfide | FeS | 8 x 10-19 |
| Iron(III) hydroxide | Fe(OH)3 | 2.79 x 10-39 |
| Iron(III) phosphate dihydrate | FePO4 x 2H2O | 9.91 x 10-16 |
| Lanthanum iodate | La(IO3)3 | 7.50 x 10-12 |
| Lead(II) bromide | PbBr2 | 6.60 x 10-6 |
| Lead(II) carbonate | PbCO3 | 7.40 x 10-14 |
| Lead(II) chloride | PbCl2 | 1.70 x 10-5 |
| Lead(II) chromate | PbCrO4 | 3 x 10-13 |
| Lead(II) fluoride | PbF2 | 3.3 x 10-8 |
| Lead(II) hydroxide | Pb(OH)2 | 1.43 x 10-20 |
| Lead(II) iodate | Pb(IO3)2 | 3.69 x 10-13 |
| Lead(II) iodide | PbI2 | 9.8 x 10-9 |
| Lead(II) oxalate | PbC2O4 | 8.5 x 10-9 |
| Lead(II) selenate | PbSeO4 | 1.37 x 10-7 |
| Lead(II) sulfate | PbSO4 | 2.53 x 10-8 |
| Lead(II) sulfide | PbS | 3 x 10-28 |
| Lithium carbonate | Li2CO3 | 8.15 x 10-4 |
| Lithium fluoride | LiF | 1.84 x 10-3 |
| Lithium phosphate | Li3PO4 | 2.37 x 10-4 |
| Magnesium ammonium phosphate | MgNH4PO4 | 3 x 10-13 |
| Magnesium carbonate | MgCO3 | 6.82 x 10-6 |
| Magnesium carbonate trihydrate | MgCO3 x 3H2O | 2.38 x 10-6 |
| Magnesium carbonate pentahydrate | MgCO3 x 5H2O | 3.79 x 10-6 |
| Magnesium fluoride | MgF2 | 5.16 x 10-11 |
| Magnesium hydroxide | Mg(OH)2 | 5.61 x 10-12 |
| Magnesium oxalate dihydrate | MgC2O4 x 2H2O | 4.83 x 10-6 |
| Magnesium phosphate | Mg3(PO4)2 | 1.04 x 10-24 |
| Manganese(II) carbonate | MnCO3 | 2.24 x 10-11 |
| Manganese(II) iodate | Mn(IO3)2 | 4.37 x 10-7 |
| Manganese(II) hydroxide | Mn(OH)2 | 2 x 10-13 |
| Manganese(II) oxalate dihydrate | MnC2O4 x 2H2O | 1.70 x 10-7 |
| Manganese(II) sulfide (pink) | MnS | 3 x 10-11 |
| Manganese(II) sulfide (green) | MnS | 3 x 10-14 |
| Mercury(I) bromide | Hg2Br2 | 6.40 x 10-23 |
| Mercury(I) carbonate | Hg2CO3 | 3.6 x 10-17 |
| Mercury(I) chloride | Hg2Cl2 | 1.43 x 10-18 |
| Mercury(I) fluoride | Hg2F2 | 3.10 x 10-6 |
| Mercury(I) iodide | Hg2I2 | 5.2 x 10-29 |
| Mercury(I) oxalate | Hg2C2O4 | 1.75 x 10-13 |
| Mercury(I) sulfate | Hg2SO4 | 6.5 x 10-7 |
| Mercury(I) thiocyanate | Hg2(SCN)2 | 3.2 x 10-20 |
| Mercury(II) bromide | HgBr2 | 6.2 x 10-20 |
| Mercury(II) hydroxide | HgO | 3.6 x 10-26 |
| Mercury(II) iodide | HgI2 | 2.9 x 10-29 |
| Mercury(II) sulfide (black) | HgS | 2 x 10-53 |
| Mercury(II) sulfide (red) | HgS | 2 x 10-54 |
| Neodymium carbonate | Nd2(CO3)3 | 1.08 x 10-33 |
| Nickel(II) carbonate | NiCO3 | 1.42 x 10-7 |
| Nickel(II) hydroxide | Ni(OH)2 | 5.48 x 10-16 |
| Nickel(II) iodate | Ni(IO3)2 | 4.71 x 10-5 |
| Nickel(II) phosphate | Ni3(PO4)2 | 4.74 x 10-32 |
| Nickel(II) sulfide (alpha) | NiS | 4 x 10-20 |
| Nickel(II) sulfide (beta) | NiS | 1.3 x 10-25 |
| Palladium(II) thiocyanate | Pd(SCN)2 | 4.39 x 10-23 |
| Potassium hexachloroplatinate | K2PtCl6 | 7.48 x 10-6 |
| Potassium perchlorate | KClO4 | 1.05 x 10-2 |
| Potassium periodate | KIO4 | 3.71 x 10-4 |
| Praseodymium hydroxide | Pr(OH)3 | 3.39 x 10-24 |
| Radium iodate | Ra(IO3)2 | 1.16 x 10-9 |
| Radium sulfate | RaSO4 | 3.66 x 10-11 |
| Rubidium perchlorate | RuClO4 | 3.00 x 10-3 |
| Scandium fluoride | ScF3 | 5.81 x 10-24 |
| Scandium hydroxide | Sc(OH)3 | 2.22 x 10-31 |
| Silver(I) acetate | AgCH3COO | 1.94 x 10-3 |
| Silver(I) arsenate | Ag3AsO4 | 1.03 x 10-22 |
| Silver(I) bromate | AgBrO3 | 5.38 x 10-5 |
| Silver(I) bromide | AgBr | 5.35 x 10-13 |
| Silver(I) carbonate | Ag2CO3 | 8.46 x 10-12 |
| Silver(I) chloride | AgCl | 1.77 x 10-10 |
| Silver(I) chromate | Ag2CrO4 | 1.12 x 10-12 |
| Silver(I) cyanide | AgCN | 5.97 x 10-17 |
| Silver(I) iodate | AgIO3 | 3.17 x 10-8 |
| Silver(I) iodide | AgI | 8.52 x 10-17 |
| Silver(I) oxalate | Ag2C2O4 | 5.40 x 10-12 |
| Silver(I) phosphate | Ag3PO4 | 8.89 x 10-17 |
| Silver(I) sulfate | Ag2SO4 | 1.20 x 10-5 |
| Silver(I) sulfite | Ag2SO3 | 1.50 x 10-14 |
| Silver(I) sulfide | Ag2S | 8 x 10-51 |
| Silver(I) thiocyanate | AgSCN | 1.03 x 10-12 |
| Strontium arsenate | Sr3(AsO4)2 | 4.29 x 10-19 |
| Strontium carbonate | SrCO3 | 5.60 x 10-10 |
| Strontium fluoride | SrF2 | 4.33 x 10-9 |
| Strontium iodate | Sr(IO3)2 | 1.14 x 10-7 |
| Strontium iodate monohydrate | Sr(IO3)2 x H2O | 3.77 x 10-7 |
| Strontium iodate hexahydrate | Sr(IO3)2 x 6H2O | 4.55 x 10-7 |
| Strontium oxalate | SrC2O4 | 5 x 10-8 |
| Strontium sulfate | SrSO4 | 3.44 x 10-7 |
| Thallium(I) bromate | TlBrO3 | 1.10 x 10-4 |
| Thallium(I) bromide | TlBr | 3.71 x 10-6 |
| Thallium(I) chloride | TlCl | 1.86 x 10-4 |
| Thallium(I) chromate | Tl2CrO4 | 8.67 x 10-13 |
| Thallium(I) hydroxide | Tl(OH)3 | 1.68 x 10-44 |
| Thallium(I) iodate | TlIO3 | 3.12 x 10-6 |
| Thallium(I) iodide | TlI | 5.54 x 10-8 |
| Thallium(I) thiocyanate | TlSCN | 1.57 x 10-4 |
| Thallium(I) sulfide | Tl2S | 6 x 10-22 |
| Tin(II) hydroxide | Sn(OH)2 | 5.45 x 10-27 |
| Yttrium carbonate | Y2(CO3)3 | 1.03 x 10-31 |
| Yttrium fluoride | YF3 | 8.62 x 10-21 |
| Yttrium hydroxide | Y(OH)3 | 1.00 x 10-22 |
| Yttrium iodate | Y(IO3)3 | 1.12 x 10-10 |
| Zinc arsenate | Zn3(AsO4)2 | 2.8 x 10-28 |
| Zinc carbonate | ZnCO3 | 1.46 x 10-10 |
| Zinc carbonate monohydrate | ZnCO3 x H2O | 5.42 x 10-11 |
| Zinc fluoride | ZnF | 3.04 x 10-2 |
| Zinc hydroxide | Zn(OH)2 | 3 x 10-17 |
| Zinc iodate dihydrate | Zn(IO3)2 x 2H2O | 4.1 x 10-6 |
| Zinc oxalate dihydrate | ZnC2O4 x 2H2O | 1.38 x 10-9 |
| Zinc selenide | ZnSe | 3.6 x 10-26 |
| Zinc selenite monohydrate | ZnSe x H2O | 1.59 x 10-7 |
| Zinc sulfide (alpha) | ZnS | 2 x 10-25 |
| Zinc sulfide (beta) | ZnS | 3 x 10-23 |