Magnesium phosphate is written Mg₃(PO₄)₂. With school atomic masses the molar mass is 262 g/mol. In magnesium phosphate, Mg²⁺ and PO₄³⁻ balance when magnesium has subscript 3 and phosphate has subscript 2.
H₂O
WaterNH₃
AmmoniaCO₂
Carbon DioxideH₂O₂
Hydrogen PeroxideSO₂
Sulfur DioxideNO₂
Nitrogen DioxideHCl
Hydrochloric AcidH₂SO₄
Sulfuric AcidHNO₃
Nitric AcidCH₄
MethaneC₂H₆
EthaneC₃H₈
PropaneC₄H₁₀
ButaneC₂H₄
EthyleneC₂H₂
AcetyleneC₆H₆
BenzeneC₇H₈
TolueneC₁₀H₈
NaphthaleneC₆H₁₂
CyclohexaneCH₃OH
MethanolC₂H₅OH
EthanolCH₃COOH
Acetic AcidHCHO
FormaldehydeCH₃COCH₃
AcetoneC₄H₁₀O
Diethyl EtherC₂H₇N
EthylamineC₂H₅NO
AcetamideC₆H₁₂O₆
GlucoseC₆H₁₂O₆
FructoseC₁₂H₂₂O₁₁
SucroseCO(NH₂)₂
UreaC₂₇H₄₆O
CholesterolC₉H₈O₄
AspirinC₈H₉NO₂
AcetaminophenC₁₃H₁₈O₂
IbuprofenC₈H₁₀N₄O₂
CaffeineC₆H₆N₂O
NicotinamideC₆H₈O₆
Ascorbic AcidC₁₆H₁₈N₂O₄S
Penicillin GC₂H₆O₂
Ethylene GlycolC₈H₈
StyreneC₂H₃Cl
Vinyl ChlorideC₃H₅NO
AcrylamideC₆H₁₁NO
CaprolactamLiCl
Lithium chlorideNa₂O
Sodium oxideNaCl
Sodium chlorideMgF₂
Magnesium fluorideAlCl₃
Aluminum chlorideCaO
Calcium oxideCaC₂
Calcium carbideKNO₃
Potassium nitrateMg₃(PO₄)₂
Magnesium phosphateAl₂(SO₄)₃
Aluminum sulfateMg(OH)₂
Magnesium hydroxideNH₄Cl
Ammonium chlorideNH₄OH
Ammonium hydroxideCuO
Copper(II) oxideCu₂O
Copper(I) oxideFeSO₄
Iron(II) sulfateFe₂(SO₄)₃
Iron(III) sulfatePbCO₃
Lead(II) carbonateMgO
Magnesium oxideAl₂S₃
Aluminum sulfideLiF
Lithium fluoride(NH₄)₂S
Ammonium sulfideKF
Potassium fluorideNiCl₂
Nickel(II) chlorideKCN
Potassium cyanideCH₃COONa
Sodium acetateCaCO₃
Calcium carbonateNa₃P
Sodium phosphideBeBr₂
Beryllium bromideFeO
Iron(II) oxideHg₂Cl₂
Mercury(I) chlorideHg(NO₃)₂
Mercury(II) nitrateCH₃COOCu
Copper(I) acetateSiO₂
Silicon dioxideP₄O₁₀
Tetraphosphorus decaoxideN₂O₅
Dinitrogen pentoxideCO
Carbon monoxideHF
Hydrogen fluoridePCl₅
Phosphorus pentachlorideCF₄
Carbon tetrafluorideSF₆
Sulfur hexafluorideNBr₃
Nitrogen tribromideN₂O
Dinitrogen monoxideN₂O₃
Dinitrogen trioxideCS₂
Carbon disulfideCl₂O₇
Dichlorine heptoxideBF₃
Boron trifluorideCCl₄
Carbon tetrachlorideSO₃
Sulfur trioxideSiCl₄
Silicon tetrachlorideP₂S₅
Diphosphorus pentasulfideBCl₃
Boron trichloridePBr₃
Phosphorus tribromideCBr₄
Carbon tetrabromideNF₃
Nitrogen trifluorideOF₂
Oxygen difluorideNCl₃
Nitrogen trichlorideH₂S
Hydrogen sulfidePH₃
PhosphineBeCl₂
Beryllium chlorideHCN
Hydrogen cyanideClF₃
Chlorine trifluorideXeF₂
Xenon difluoridea
2
b
2
c
2
In magnesium phosphate, Mg²⁺ and PO₄³⁻ balance when magnesium has subscript 3 and phosphate has subscript 2. The phosphate ion is written in parentheses.
Properties
Molar mass
262.86 g/mol
Bond type
Ionic
Uses
Nutritional supplements · Ceramics · Structures related to bone mineral
Molar mass calculation
Masses given in the question come first. When none are given, school values put the total at 262 g/mol.
+
+
= 262 g/mol
Mg₃(PO₄)₂
Mg₃O₈P₂
The same count with periodic-table atomic masses gives 262.855 g/mol.
| Element | Atom count | Contribution (g/mol) | Mass % |
|---|---|---|---|
| Magnesium (Mg) | 3 | 72.915 | 27.7 |
| Oxygen (O) | 8 | 127.992 | 48.7 |
| Phosphorus (P) | 2 | 61.948 | 23.6 |
| Total | 262.855 | 100 |
Common questions
What is magnesium phosphate?
In magnesium phosphate, Mg²⁺ and PO₄³⁻ balance when magnesium has subscript 3 and phosphate has subscript 2. The phosphate ion is written in parentheses.
What is the formula of magnesium phosphate?
Magnesium phosphate is written Mg₃(PO₄)₂. The molecular formula is Mg₃O₈P₂.
What is the molar mass of magnesium phosphate?
Magnesium phosphate has a molar mass of 262.855 g/mol from the atomic masses on the periodic table. With school atomic masses the total is 262 g/mol, counting 3 magnesium, 8 oxygen and 2 phosphorus.
What is magnesium phosphate used for?
Magnesium phosphate is used for nutritional supplements, ceramics and structures related to bone mineral.