CAS 10043-83-1CAS 7757-87-1PubChem CID 24439
Magnesium Phosphate
Magnesium phosphate is an inorganic magnesium salt. — ChEBI
- IUPAC name
- trimagnesium diphosphate
- Molecular formula
- Mg3O8P2
- Molecular weight
- 262.86 g/mol
- Exact mass
- 261.8619660 Da
- Topological polar surface area
- 173.0 Ų
- Hydrogen-bond donors
- 0
- Hydrogen-bond acceptors
- 8
- Covalent units
- 5
- Defined stereocentres
- 0
Also known as
newberyteRefChem:925189trimagnesium orthophosphate233-142-9680-895-8684-534-5Phosphoric acid, magnesium saltPhosphoric acid, magnesium salt (1:?)
16 more reported names
7757-87-1TRIMAGNESIUM PHOSPHATEMAGNESIUMPHOSPHATEPhosphoric acid, magnesium salt (2:3)trimagnesium;diphosphateMagnesium phosphate anhydrousMagnesium phosphate (Mg3(PO4)2)Tertiary magnesium phosphateMagnesium phosphate (3:2)Trimagnesium bis(orthophosphate)XMK14ETW2DMagnesium phosphate, tribasic, anhydrousMagnesium orthophosphateUNII-XMK14ETW2DNeutral magnesium phosphateTribasic magnesium phosphate
External database identifiers
- ChEBI:CHEBI:190298
- ChEMBL:CHEMBL2106873
- EPA DTXSID:DTXSID00872527
Evidence from additional scientific databases
NIH PubChem PUG-View
Exact identifier match24439
Attributed physical-property, hazard, environmental and use annotations.
- Color/Form: RHOMBIC PLATES Source: Hazardous Substances Data Bank (HSDB)
- Density: Crystallizes with 5, 8, and 22 H2O /molecules/ ... salts are practically insoluble in water but readily soluble in acids; density (octahydrate): 2.19; density (22 H2O): 1.66 Source: Hazardous Substances Data Bank (HSDB)
- Melting Point: 1,184 °C Source: Hazardous Substances Data Bank (HSDB)
- Odor: odorless Source: Hazardous Substances Data Bank (HSDB)
- Physical Description: Odorless iridescent solid; [HSDB] White odorless powder; [MSDSonline] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Solubility: INSOL IN COLD OR HOT WATER; INSOL IN LIQUID AMMONIA; SOL IN AMMONIUM SALT SOLN Source: Hazardous Substances Data Bank (HSDB)
- Note: This chemical does not meet GHS hazard criteria for 100% (125 of 125) of all reports. Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: Not Classified; Reported as not meeting GHS hazard criteria by 125 of 125 companies. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
- ECHA C&L Notifications Summary: Aggregated GHS information provided per 125 reports by companies from 2 notifications to the ECHA C&L Inventory.; Reported as not meeting GHS hazard criteria per 125 of 125 reports by companies.; There are 0 notifications provided by 0 of 125 reports by companies with hazard statement code(s).; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
- Signal: Warning Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]; H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H335 (100%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
- ECHA C&L Notifications Summary: Aggregated GHS information provided per 38 reports by companies from 1 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
- Note: This chemical does not meet GHS hazard criteria for 14.3% (2 of 14) of reports. Source: European Chemicals Agency (ECHA)
- Signal: Danger Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H302 (78.6%): Harmful if swallowed [Warning Acute toxicity, oral]; H311 (78.6%): Toxic in contact with skin [Danger Acute toxicity, dermal]; H314 (78.6%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H331 (78.6%): Toxic if inhaled [Danger Acute toxicity, inhalation] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P260, P261, P262, P264, P270, P271, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P330, P361+P364, P363, P403+P233, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
- ECHA C&L Notifications Summary: Aggregated GHS information provided per 14 reports by companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Reported as not meeting GHS hazard criteria per 2 of 14 reports by companies.; There are 2 notifications provided by 12 of 14 reports by companies with hazard statement code(s).; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
- Cosmetic Ingredient Review Conclusion: The CIR Expert Panel concluded that the following 31 ingredients are safe in the present practices of use and concentration in cosmetics as described in this safety assessment, when formulated to be non-irritating...Magnesium Phosphate... Source: Cosmetic Ingredient Review (CIR)
- Cosmetic Ingredient Review Finding(s): Safe for use in cosmetics, with qualifications Source: Cosmetic Ingredient Review (CIR)
- Cosmetic Ingredient Review Conclusion: The CIR Expert Panel concluded that the following 31 ingredients are safe in the present practices of use and concentration in cosmetics as described in this safety assessment, when formulated to be non-irritating...Trimagnesium Phosphate... Source: Cosmetic Ingredient Review (CIR)
- Cosmetic Ingredient Review Link: CIR ingredient: Magnesium Phosphate Source: Cosmetic Ingredient Review (CIR)
- Cosmetic Ingredient Review Link: CIR ingredient: Trimagnesium Phosphate Source: Cosmetic Ingredient Review (CIR)
- Sources/Uses: Octahydrate found as the mineral bobierrite; [Merck Index] Used as a plant food, dentifrice polishing agent, stabilizer for plastics, food additive, dietary supplement, anti-caking agent for silicate detergents and table salt, stabilizer for calcium phosphate dihydrate, and antacid; [HSDB] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Uses: PLANT FOOD Source: Hazardous Substances Data Bank (HSDB)
- Uses: DENTIFRICE POLISHING AGENT; ADSORBENT; STABILIZER FOR PLASTICS; FOOD ADDITIVE AND DIETARY SUPPLEMENT. Source: Hazardous Substances Data Bank (HSDB)
- Uses: It is used as anticaking agent for silicate-containing cleaning agents and table salt and as a stabilizer for CaHPO4.2H20. Source: Hazardous Substances Data Bank (HSDB)
Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record
Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.
Additional source coverage and match status
| Source | Result | Checked |
|---|---|---|
| EMBL-EBI ChEBI | No exact record | 2026-08-31 |
| NIH PubChem PUG-View | Exact match | 2026-08-31 |
A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.