Magnesium chlorate

Magnesium chlorate
Names
	IUPAC name Magnesium dichlorate hexahydrate
	Systematic IUPAC name Magnesium dichlorate
	Other names Magnesium(II) chlorate;
Identifiers
CAS Number	10326-21-3; (dihydrate): 36355-97-2; (hexahydrate): 7791-19-7;
3D model (JSmol)	Interactive image; (dihydrate): Interactive image; (hexahydrate): Interactive image;
ChemSpider	64853748; (dihydrate): 80564724; (hexahydrate): 128878;
ECHA InfoCard	100.030.634
EC Number	233-711-1;
PubChem CID	25155; (dihydrate): 71437298; (hexahydrate): 146100;
UNII	M536P01U3N;
UN number	2723
CompTox Dashboard (EPA)	DTXSID30890653 ; (hexahydrate): DTXSID30999110;
	InChI InChI=1S/2ClHO3.Mg/c22-1(3)4;/h2(H,2,3,4);/q;;+2/p-2 Key: NNNSKJSUQWKSAM-UHFFFAOYSA-L; (dihydrate): InChI=1S/2ClHO3.Mg.2H2O/c22-1(3)4;;;/h2(H,2,3,4);;21H2/q;;+2;;/p-2 Key: YTXOASNCVSJHNM-UHFFFAOYSA-L; (hexahydrate): InChI=1S/2ClHO3.Mg.6H2O/c22-1(3)4;;;;;;;/h2(H,2,3,4);;61H2/q;;+2;;;;;;/p-2 Key: XKPLAISKKLSAQQ-UHFFFAOYSA-L;
	SMILES Cl(=O)(=O)[O-].Cl(=O)(=O)[O-].[Mg+2]; (dihydrate): O.O.[Mg+2].[O-]Cl(=O)=O.[O-]Cl(=O)=O; (hexahydrate): O.O.O.O.O.O.[O-]Cl(=O)=O.[O-]Cl(=O)=O.[Mg+2];
Properties
Chemical formula	Mg(ClO3)2
Molar mass	191.20 g/mol
Appearance	White crystalline solid
Density	1.747 g/cm3 (hexahydrate)
Melting point	35 °C (95 °F; 308 K)
Boiling point	120 °C (248 °F; 393 K) (decomposition)
Solubility in water	114 g/100 ml (0 °C); 123 g/100 ml (10 °C); 135 g/100 ml (20 °C); 155 g/100 ml (30 °C); 178 g/100 ml (50 °C); 242 g/100 ml (60 °C); 268 g/100 ml (100 °C)
Solubility in acetone	Soluble
Structure
Crystal structure	Monoclinic
Space group	P21/c
Lattice constant	a = 6.39 Å, b = 6.51 Å, c = 13.90 Å α = 90°, β = 100.3°, γ = 90°
Lattice volume (V)	590.1 Å3
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H332
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	6348 mg/kg (rat, oral)
Related compounds
Other cations	Calcium chlorate; Strontium chlorate; Barium chlorate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Magnesium chlorate refers to inorganic compounds with the chemical formula Mg(ClO₃)₂(H₂O)_x. The anhydrous (x = 0), dihydrate (x = 2), and hexahydrate (x = 6) are known. These are thermally labile white solids. The hexahydrate has been identified on the Martian surface.

Names

IUPAC name Magnesium dichlorate hexahydrate
Systematic IUPAC name Magnesium dichlorate
Other names Magnesium(II) chlorate
Identifiers
CAS Number	10326-21-3 (dihydrate): 36355-97-2 (hexahydrate): 7791-19-7
3D model (JSmol)	Interactive image (dihydrate): Interactive image (hexahydrate): Interactive image
ChemSpider	64853748 (dihydrate): 80564724 (hexahydrate): 128878
ECHA InfoCard	100.030.634
EC Number	233-711-1
PubChem CID	25155 (dihydrate): 71437298 (hexahydrate): 146100
UNII	M536P01U3N
UN number	2723
CompTox Dashboard (EPA)	DTXSID30890653 (hexahydrate): DTXSID30999110
InChI InChI=1S/2ClHO3.Mg/c22-1(3)4;/h2(H,2,3,4);/q;;+2/p-2 Key: NNNSKJSUQWKSAM-UHFFFAOYSA-L (dihydrate): InChI=1S/2ClHO3.Mg.2H2O/c22-1(3)4;;;/h2(H,2,3,4);;21H2/q;;+2;;/p-2 Key: YTXOASNCVSJHNM-UHFFFAOYSA-L (hexahydrate): InChI=1S/2ClHO3.Mg.6H2O/c22-1(3)4;;;;;;;/h2(H,2,3,4);;61H2/q;;+2;;;;;;/p-2 Key: XKPLAISKKLSAQQ-UHFFFAOYSA-L
SMILES Cl(=O)(=O)[O-].Cl(=O)(=O)[O-].[Mg+2] (dihydrate): O.O.[Mg+2].[O-]Cl(=O)=O.[O-]Cl(=O)=O (hexahydrate): O.O.O.O.O.O.[O-]Cl(=O)=O.[O-]Cl(=O)=O.[Mg+2]
Properties
Chemical formula	Mg(ClO₃)₂
Molar mass	191.20 g/mol
Appearance	White crystalline solid
Density	1.747 g/cm³ (hexahydrate)
Melting point	35 °C (95 °F; 308 K)
Boiling point	120 °C (248 °F; 393 K) (decomposition)
Solubility in water	114 g/100 ml (0 °C) 123 g/100 ml (10 °C) 135 g/100 ml (20 °C) 155 g/100 ml (30 °C) 178 g/100 ml (50 °C) 242 g/100 ml (60 °C) 268 g/100 ml (100 °C)
Solubility in acetone	Soluble
Structure
Crystal structure	Monoclinic
Space group	P2₁/c
Lattice constant	a = 6.39 Å, b = 6.51 Å, c = 13.90 Å α = 90°, β = 100.3°, γ = 90°
Lattice volume (V)	590.1 Å³
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H332
Lethal dose or concentration (LD, LC):
LD₅₀ (median dose)	6348 mg/kg (rat, oral)
Related compounds
Other cations	Calcium chlorate Strontium chlorate Barium chlorate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references