Solubility product at 25°C
Order list by:           Alphabetical name     cation     anion     decreasing Ksp value
Name	molecular formula	Ksp
OH-
Barium hydroxide octahydrate	Ba(OH)2•8H2O	2.55x10-04
Calcium hydroxide	Ca(OH)2	5.02x10-06
Magnesium hydroxide	Mg(OH)2	5.61x10-12
Manganese(II) hydroxide	Mn(OH)2	2.00x10-13
Cadmium hydroxide	Cd(OH)2	7.20x10-15
Cobalt(II) hydroxide (blue)	Co(OH)2	5.92x10-15
Copper(I) hydroxide	CuOH	2.00x10-15
Nickel(II) hydroxide	Ni(OH)2	5.48x10-16
Iron(II) hydroxide	Fe(OH)2	4.87x10-17
Zinc hydroxide	Zn(OH)2	3.00x10-17
Copper(II) hydroxide	Cu(OH)2	4.80x10-20
Lead(II) hydroxide	Pb(OH)2	1.43x10-20
Beryllium hydroxide	Be(OH)2	6.92x10-22
Yttrium hydroxide	Y(OH)3	1.00x10-22
Praseodymium hydroxide	Pr(OH)3	3.39x10-24
Mercury(II) hydroxide	HgO	3.60x10-26
Europium(III) hydroxide	Eu(OH)3	9.38x10-27
Tin(II) hydroxide	Sn(OH)2	5.45x10-27
Scandium hydroxide	Sc(OH)3	2.22x10-31
Aluminium hydroxide	Al(OH)3	3.00x10-34
Gallium(III) hydroxide	Ga(OH)3	7.28x10-36
Iron(III) hydroxide	Fe(OH)3	2.79x10-39
Thallium(I) hydroxide	Tl(OH)3	1.68x10-44
CO32-
Lithium carbonate	Li2CO3	8.15x10-04
Magnesium carbonate	MgCO3	6.82x10-06
Magnesium carbonate pentahydrate	MgCO3•5H2O	3.79x10-06
Magnesium carbonate trihydrate	MgCO3•3H2O	2.38x10-06
Nickel(II) carbonate	NiCO3	1.42x10-07
Calcium carbonate (aragonite)	CaCO3	6.00x10-09
Calcium carbonate (calcite)	CaCO3	3.36x10-09
Barium carbonate	BaCO3	2.58x10-09
Strontium carbonate	SrCO3	5.60x10-10
Zinc carbonate	ZnCO3	1.46x10-10
Cobalt(II) carbonate	CoCO3	1.00x10-10
Zinc carbonate monohydrate	ZnCO3•H2O	5.42x10-11
Iron(II) carbonate	FeCO3	3.13x10-11
Manganese(II) carbonate	MnCO3	2.24x10-11
silver carbonate	Ag2CO3	8.46x10-12
Cadmium carbonate	CdCO3	1.00x10-12
Lead(II) carbonate	PbCO3	7.40x10-14
Mercury(I) carbonate	Hg2CO3	3.60x10-17
Yttrium carbonate	Y2(CO3)3	1.03x10-31
Neodymium carbonate	Nd2(CO3)3	1.08x10-33
F-
Zinc fluoride	ZnF2	3.04x10-02
Cadmium fluoride	CdF2	6.44x10-03
Lithium fluoride	LiF	1.84x10-03
Mercury(I) fluoride	Hg2F2	3.10x10-06
Iron(II) fluoride	FeF2	2.36x10-06
Barium fluoride	BaF2	1.84x10-07
Lead(II) fluoride	PbF2	3.30x10-08
Strontium fluoride	SrF2	4.33x10-09
Magnesium fluoride	MgF2	5.16x10-11
Calcium fluoride	CaF2	3.45x10-11
Yttrium fluoride	YF3	8.62x10-21
Scandium fluoride	ScF3	5.81x10-24
Cl-
Thallium(I) chloride	TlCl	1.86x10-04
Lead(II) chloride	PbCl2	1.70x10-05
Copper(I) chloride	CuCl	1.72x10-07
silver chloride	AgCl	1.77x10-10
Mercury(I) chloride	Hg2Cl2	1.43x10-18
Br-
Lead(II) bromide	PbBr2	6.60x10-06
Thallium(I) bromide	TlBr	3.71x10-06
Copper(I) bromide	CuBr	6.27x10-09
silver bromide	AgBr	5.35x10-13
Mercury(II) bromide	HgBr2	6.20x10-20
Mercury(I) bromide	Hg2Br2	6.40x10-23
I-
Thallium(I) iodide	TlI	5.54x10-08
Lead(II) iodide	PbI2	9.80x10-09
Copper(I) iodide	CuI	1.27x10-12
silver iodide	AgI	8.52x10-17
Bismuth iodide	BiI	7.71x10-19
Mercury(I) iodide	Hg2I2	5.20x10-29
Mercury(II) iodide	HgI2	2.90x10-29
S2-
Manganese(II) sulfide (pink)	MnS	3.00x10-11
Manganese(II) sulfide (green)	MnS	3.00x10-14
Iron(II) sulfide	FeS	8.00x10-19
Nickel(II) sulfide (alpha)	NiS	4.00x10-20
Thallium(I) sulfide	Tl2S	6.00x10-22
Cobalt(II) sulfide (alpha)	CoS	5.00x10-22
Zinc sulfide (beta)	ZnS	3.00x10-23
Zinc sulfide (alpha)	ZnS	2.00x10-25
Nickel(II) sulfide (beta)	NiS	1.30x10-25
Cobalt(II) sulfide (beta)	CoS	3.00x10-26
Cadmium sulfide	CdS	1.00x10-27
Lead(II) sulfide	PbS	3.00x10-28
Copper(II) sulfide	CuS	8.00x10-37
silver sulfide	Ag2S	8.00x10-51
Mercury(II) sulfide (black)	HgS	2.00x10-53
Mercury(II) sulfide (red)	HgS	2.00x10-54
PO43-
Lithium phosphate	Li3PO4	2.37x10-04
Magnesium ammonium phosphate	MgNH4PO4	3.00x10-13
Iron(III) phosphate dihydrate	FePO4•2H2O	9.91x10-16
silver phosphate	Ag3PO4	8.89x10-17
Aluminium phosphate	AlPO4	9.84x10-21
Magnesium phosphate	Mg3(PO4)2	1.04x10-24
Nickel(II) phosphate	Ni3(PO4)2	4.74x10-32
Cadmium phosphate	Cd3(PO4)2	2.53x10-33
Calcium phosphate	Ca3(PO4)2	2.07x10-33
Cobalt(II) phosphate	Co3(PO4)2	2.05x10-35
Copper(II) phosphate	Cu3(PO4)2	1.40x10-37
SO42-
Calcium sulfate	CaSO4	4.93x10-05
Calcium sulfate dihydrate	CaSO4•2H2O	3.14x10-05
silver sulfate	Ag2SO4	1.20x10-05
Mercury(I) sulfate	Hg2SO4	6.50x10-07
Strontium sulfate	SrSO4	3.44x10-07
Calcium sulfate hemihydrate	CaSO4•0.5H2O	3.10x10-07
Lead(II) sulfate	PbSO4	2.53x10-08
Barium sulfate	BaSO4	1.08x10-10
SO32-
Barium sulfite	BaSO3	5.00x10-10
silver sulfite	Ag2SO3	1.50x10-14
C2O42-
Magnesium oxalate dihydrate	MgC2O4•2H2O	4.83x10-06
Manganese(II) oxalate dihydrate	MnC2O4•2H2O	1.70x10-07
Strontium oxalate	SrC2O4	5.00x10-08
Cadmium oxalate trihydrate	CdC2O4•3H2O	1.42x10-08
Lead(II) oxalate	PbC2O4	8.50x10-09
Calcium oxalate monohydrate	CaC2O4•H2O	2.32x10-09
Zinc oxalate dihydrate	ZnC2O4•2H2O	1.38x10-09
Copper(II) oxalate	CuC2O4	4.43x10-10
silver oxalate	Ag2C2O4	5.40x10-12
Mercury(I) oxalate	Hg2C2O4	1.75x10-13
ClO4-
Potassium perchlorate	KClO4	1.05x10-02
Caesium perchlorate	CsClO4	3.95x10-03
Rubidium perchlorate	RuClO4	3.00x10-03
BrO3-
Barium bromate	Ba(BrO3)2	2.43x10-04
Thallium(I) bromate	TlBrO3	1.10x10-04
silver bromate	AgBrO3	5.38x10-05
IO4-
Potassium periodate	KIO4	3.71x10-04
Caesium periodate	CsIO4	5.16x10-06
IO3-
Cobalt(II) iodate dihydrate	Co(IO3)2•2H2O	1.21x10-02
Nickel(II) iodate	Ni(IO3)2	4.71x10-05
Calcium iodate	Ca(IO3)2	6.47x10-06
Zinc iodate dihydrate	Zn(IO3)2•2H2O	4.10x10-06
Thallium(I) iodate	TlIO3	3.12x10-06
Calcium iodate hexahydrate	Ca(IO3)2•6H2O	7.10x10-07
Strontium iodate hexahydrate	Sr(IO3)2•6H2O	4.55x10-07
Manganese(II) iodate	Mn(IO3)2	4.37x10-07
Strontium iodate monohydrate	Sr(IO3)2•H2O	3.77x10-07
Strontium iodate	Sr(IO3)2	1.14x10-07
Copper(II) iodate monohydrate	Cu(IO3)2•H2O	6.94x10-08
silver iodate	AgIO3	3.17x10-08
Cadmium iodate	Cd(IO3)2	2.50x10-08
Barium iodate	Ba(IO3)2	4.01x10-09
Barium iodate monohydrate	Ba(IO3)2•H2O	1.67x10-09
Lanthanum iodate	La(IO3)3	7.50x10-12
Lead(II) iodate	Pb(IO3)2	3.69x10-13
CN-
silver cyanide	AgCN	5.97x10-17
Copper(I) cyanide	CuCN	3.47x10-20
SCN-
Thallium(I) thiocyanate	TlSCN	1.57x10-04
silver thiocyanate	AgSCN	1.03x10-12
Copper(I) thiocyanate	CuSCN	1.77x10-13
Mercury(I) thiocyanate	Hg2(SCN)2	3.20x10-20
Palladium(II) thiocyanate	Pd(SCN)2	4.39x10-23
AsO42-
Bismuth arsenate	BiAsO4	4.43x10-10
Strontium arsenate	Sr3(AsO4)2	4.29x10-19
silver arsenate	Ag3AsO4	1.03x10-22
Zinc arsenate	Zn3(AsO4)2	2.80x10-28
Cobalt(II) arsenate	Co3(AsO4)2	6.80x10-29
Cadmium arsenate	Cd3(AsO4)2	2.20x10-33
Copper(II) arsenate	Cu3(AsO4)2	7.95x10-36
CrO42-
Barium chromate	BaCrO4	1.17x10-10
silver chromate	Ag2CrO4	1.12x10-12
Thallium(I) chromate	Tl2CrO4	8.67x10-13
Lead(II) chromate	PbCrO4	3.00x10-13
CH3COO-
silver acetate	AgCH3COO	1.94x10-03
NO3-
Barium nitrate	Ba(NO3)2	4.64x10-03
Handbook of Chemistry and Physics. 64th Ed. R. C. Weast Editor. CRC Press, Inc. Boca Raton Florida. 1983-84. D-164 to D-169