SOLUBILITY PRODUCT CONSTANTS

Compound	Formula	Ksp (25 °C)
Aluminium hydroxide	Al(OH)3	3×10-34
Aluminium phosphate	AlPO4	9.84×10-21
Barium bromate	Ba(BrO3)2	2.43×10-4
Barium carbonate	BaCO3	2.58×10-9
Barium chromate	BaCrO4	1.17×10-10
Barium fluoride	BaF2	1.84×10-7
Barium hydroxide octahydrate	Ba(OH)2×8H2O	2.55×10-4
Barium iodate	Ba(IO3)2	4.01×10-9
Barium iodate monohydrate	Ba(IO3)2×H2O	1.67×10-9
Barium molybdate	BaMoO4	3.54×10-8
Barium nitrate	Ba(NO3)2	4.64×10-3
Barium selenate	BaSeO4	3.40×10-8
Barium sulfate	BaSO4	1.08×10-10
Barium sulfite	BaSO3	5.0×10-10
Beryllium hydroxide	Be(OH)2	6.92×10-22
Bismuth arsenate	BeAsO4	4.43×10-10
Bismuth iodide	BeI	7.71×10-19
Cadmium arsenate	Cd3(AsO4)2	2.2×10-33
Cadmium carbonate	CdCO3	1.0×10-12
Cadmium fluoride	CdF2	6.44×10-3
Cadmium hydroxide	Cd(OH)2	7.2×10-15
Cadmium iodate	Cd(IO3)2	2.5×10-8
Cadmium oxalate trihydrate	CdC2O4×3H2O	1.42×10-8
Cadmium phosphate	Cd3(PO4)2	2.53×10-33
Cadmium sulfide	CdS	1×10-27
Caesium perchlorate	CsClO4	3.95×10-3
Caesium periodate	CsIO4	5.16×10-6
Calcium carbonate (calcite)	CaCO3	3.36×10-9
Calcium carbonate (aragonite)	CaCO3	6.0×10-9
Calcium fluoride	CaF2	3.45×10-11
Calcium hydroxide	Ca(OH)2	5.02×10-6
Calcium iodate	Ca(IO3)2	6.47×10-6
Calcium iodate hexahydrate	Ca(IO3)2×6H2O	7.10×10-7
Calcium molybdate	CaMoO	1.46×10-8
Calcium oxalate monohydrate	CaC2O4×H2O	2.32×10-9
Calcium phosphate	Ca3(PO4)2	2.07×10-33
Calcium sulfate	CaSO4	4.93×10-5
Calcium sulfate dihydrate	CaSO4×2H2O	3.14×10-5
Calcium sulfate hemihydrate	CaSO4×0.5H2O	3.1×10-7
Cobalt(II) arsenate	Co3(AsO4)2	6.80×10-29
Cobalt(II) carbonate	CoCO3	1.0×10-10
Cobalt(II) hydroxide (blue)	Co(OH)2	5.92×10-15
Cobalt(II) iodate dihydrate	Co(IO3)2×2H2O	1.21×10-2
Cobalt(II) phosphate	Co3(PO4)2	2.05×10-35
Cobalt(II) sulfide (alpha)	CoS	5×10-22
Cobalt(II) sulfide (beta)	CoS	3×10-26
Copper(I) bromide	CuBr	6.27×10-9
Copper(I) chloride	CuCl	1.72×10-7
Copper(I) cyanide	CuCN	3.47×10-20
Copper(I) hydroxide *	Cu2O	2×10-15
Copper(I) iodide	CuI	1.27×10-12
Copper(I) thiocyanate	CuSCN	1.77×10-13
Copper(II) arsenate	Cu3(AsO4)2	7.95×10-36
Copper(II) hydroxide	Cu(OH)2	4.8×10-20
Copper(II) iodate monohydrate	Cu(IO3)2×H2O	6.94×10-8
Copper(II) oxalate	CuC2O4	4.43×10-10
Copper(II) phosphate	Cu3(PO4)2	1.40×10-37
Copper(II) sulfide	CuS	8×10-37
Europium(III) hydroxide	Eu(OH)3	9.38×10-27
Gallium(III) hydroxide	Ga(OH)3	7.28×10-36
Iron(II) carbonate	FeCO3	3.13×10-11
Iron(II) fluoride	FeF2	2.36×10-6
Iron(II) hydroxide	Fe(OH)2	4.87×10-17
Iron(II) sulfide	FeS	8×10-19
Iron(III) hydroxide	Fe(OH)3	2.79×10-39
Iron(III) phosphate dihydrate	FePO4×2H2O	9.91×10-16
Lanthanum iodate	La(IO3)3	7.50×10-12
Lead(II) bromide	PbBr2	6.60×10-6
Lead(II) carbonate	PbCO3	7.40×10-14
Lead(II) chloride	PbCl2	1.70×10-5
Lead(II) chromate	PbCrO4	3×10-13
Lead(II) fluoride	PbF2	3.3×10-8
Lead(II) hydroxide	Pb(OH)2	1.43×10-20
Lead(II) iodate	Pb(IO3)2	3.69×10-13
Lead(II) iodide	PbI2	9.8×10-9
Lead(II) oxalate	PbC2O4	8.5×10-9
Lead(II) selenate	PbSeO4	1.37×10-7
Lead(II) sulfate	PbSO4	2.53×10-8
Lead(II) sulfide	PbS	3×10-28
Lithium carbonate	Li2CO3	8.15×10-4
Lithium fluoride	LiF	1.84×10-3
Lithium phosphate	Li3PO4	2.37×10-4
Magnesium ammonium phosphate	MgNH4PO4	3×10-13
Magnesium carbonate	MgCO3	6.82×10-6
Magnesium carbonate trihydrate	MgCO3×3H2O	2.38×10-6
Magnesium carbonate pentahydrate	MgCO3×5H2O	3.79×10-6
Magnesium fluoride	MgF2	5.16×10-11
Magnesium hydroxide	Mg(OH)2	5.61×10-12
Magnesium oxalate dihydrate	MgC2O4×2H2O	4.83×10-6
Magnesium phosphate	Mg3(PO4)2	1.04×10-24
Manganese(II) carbonate	MnCO3	2.24×10-11
Manganese(II) iodate	Mn(IO3)2	4.37×10-7
Manganese(II) hydroxide	Mn(OH)2	2×10-13
Manganese(II) oxalate dihydrate	MnC2O4×2H2O	1.70×10-7
Manganese(II) sulfide (pink)	MnS	3×10-11
Manganese(II) sulfide (green)	MnS	3×10-14
Mercury(I) bromide	Hg2Br2	6.40×10-23
Mercury(I) carbonate	Hg2CO3	3.6×10-17
Mercury(I) chloride	Hg2Cl2	1.43×10-18
Mercury(I) fluoride	Hg2F2	3.10×10-6
Mercury(I) iodide	Hg2I2	5.2×10-29
Mercury(I) oxalate	Hg2C2O4	1.75×10-13
Mercury(I) sulfate	Hg2SO4	6.5×10-7
Mercury(I) thiocyanate	Hg2(SCN)2	3.2×10-20
Mercury(II) bromide	HgBr2	6.2×10-20
Mercury(II) hydroxide **	HgO	3.6×10-26
Mercury(II) iodide	HgI2	2.9×10-29
Mercury(II) sulfide (black)	HgS	2×10-53
Mercury(II) sulfide (red)	HgS	2×10-54
Neodymium carbonate	Nd2(CO3)3	1.08×10-33
Nickel(II) carbonate	NiCO3	1.42×10-7
Nickel(II) hydroxide	Ni(OH)2	5.48×10-16
Nickel(II) iodate	Ni(IO3)2	4.71×10-5
Nickel(II) phosphate	Ni3(PO4)2	4.74×10-32
Nickel(II) sulfide (alpha)	NiS	4×10-20
Nickel(II) sulfide (beta)	NiS	1.3×10-25
Palladium(II) thiocyanate	Pd(SCN)2	4.39×10-23
Potassium hexachloroplatinate	K2PtCl6	7.48×10-6
Potassium perchlorate	KClO4	1.05×10-2
Potassium periodate	KIO4	3.71×10-4
Praseodymium hydroxide	Pr(OH)3	3.39×10-24
Radium iodate	Ra(IO3)2	1.16×10-9
Radium sulfate	RaSO4	3.66×10-11
Rubidium perchlorate	RuClO4	3.00×10-3
Scandium fluoride	ScF3	5.81×10-24
Scandium hydroxide	Sc(OH)3	2.22×10-31
Silver(I) acetate	AgCH3COO	1.94×10-3
Silver(I) arsenate	Ag3AsO4	1.03×10-22
Silver(I) bromate	AgBrO3	5.38×10-5
Silver(I) bromide	AgBr	5.35×10-13
Silver(I) carbonate	Ag2CO3	8.46×10-12
Silver(I) chloride	AgCl	1.77×10-10
Silver(I) chromate	Ag2CrO4	1.12×10-12
Silver(I) cyanide	AgCN	5.97×10-17
Silver(I) iodate	AgIO3	3.17×10-8
Silver(I) iodide	AgI	8.52×10-17
Silver(I) oxalate	Ag2C2O4	5.40×10-12
Silver(I) phosphate	Ag3PO4	8.89×10-17
Silver(I) sulfate	Ag2SO4	1.20×10-5
Silver(I) sulfite	Ag2SO3	1.50×10-14
Silver(I) sulfide	Ag2S	8×10-51
Silver(I) thiocyanate	AgSCN	1.03×10-12
Strontium arsenate	Sr3(AsO4)2	4.29×10-19
Strontium carbonate	SrCO3	5.60×10-10
Strontium fluoride	SrF2	4.33×10-9
Strontium iodate	Sr(IO3)2	1.14×10-7
Strontium iodate monohydrate	Sr(IO3)2×H2O	3.77×10-7
Strontium iodate hexahydrate	Sr(IO3)2×6H2O	4.55×10-7
Strontium oxalate	SrC2O4	5×10-8
Strontium sulfate	SrSO4	3.44×10-7
Thallium(I) bromate	TlBrO3	1.10×10-4
Thallium(I) bromide	TlBr	3.71×10-6
Thallium(I) chloride	TlCl	1.86×10-4
Thallium(I) chromate	Tl2CrO4	8.67×10-13
Thallium(I) hydroxide	Tl(OH)3	1.68×10-44
Thallium(I) iodate	TlIO3	3.12×10-6
Thallium(I) iodide	TlI	5.54×10-8
Thallium(I) thiocyanate	TlSCN	1.57×10-4
Thallium(I) sulfide	Tl2S	6×10-22
Tin(II) hydroxide	Sn(OH)2	5.45×10-27
Yttrium carbonate	Y2(CO3)3	1.03×10-31
Yttrium fluoride	YF3	8.62×10-21
Yttrium hydroxide	Y(OH)3	1.00×10-22
Yttrium iodate	Y(IO3)3	1.12×10-10
Zinc arsenate	Zn3(AsO4)2	2.8×10-28
Zinc carbonate	ZnCO3	1.46×10-10
Zinc carbonate monohydrate	ZnCO3×H2O	5.42×10-11
Zinc fluoride	ZnF	3.04×10-2
Zinc hydroxide	Zn(OH)2	3×10-17
Zinc iodate dihydrate	Zn(IO3)2×2H2O	4.1×10-6
Zinc oxalate dihydrate	ZnC2O4×2H2O	1.38×10-9
Zinc selenide	ZnSe	3.6×10-26
Zinc selenite monohydrate	ZnSe×H2O	1.59×10-7
Zinc sulfide (alpha)	ZnS	2×10-25
Zinc sulfide (beta)	ZnS	3×10-23