Magnesium phosphate tribasic octahydrate
Magnesium phosphate tribasic octahydrate (CAS: 13446-23-6), with the formula Mg3(PO4)2 · 8H2O and a molecular weight of 406.98 g/mol, is a white crystalline solid. Supplied by Tech Serve Solutions as a purum p.a. grade, it is primarily utilised as a laboratory reagent in chemical synthesis and analysis. Its specific properties make it a valuable compound in various inorganic chemistry applications.
- IUPAC
- Trimagnesium phosphate octahydrate

Chemical Synthesis
This magnesium phosphate serves as a reactant or intermediate in the synthesis of various magnesium-containing compounds and complex inorganic materials. Its defined purity ensures reliable results in controlled laboratory environments.
Analytical Reagent
Utilised in analytical chemistry for specific precipitation reactions or as a standard in certain assays. Its consistent quality is essential for accurate quantitative and qualitative analysis in research settings.
Research and Development
A fundamental chemical for R&D laboratories exploring new materials, chemical processes, or studying the properties of inorganic salts. Its availability supports innovation across diverse scientific disciplines.
| Molecular weight | 406.98 |
|---|---|
| Linear formula | Mg3(PO4)2 · 8H2O |
| Assay | ≥97.0% (KT) |
| Grade | purum p.a. |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Cation traces | Ca: ≤1000 mg/kgCd: ≤50 mg/kgCo: ≤50 mg/kgCu: ≤50 mg/kgFe: ≤50 mg/kgK: ≤100 mg/kgNa: ≤2000 mg/kgNi: ≤50 mg/kgPb: ≤50 mg/kgZn: ≤50 mg/kg |
| Anion traces | chloride (Cl-): ≤100 mg/kgsulfate (SO42-): ≤500 mg/kg |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Magnesium phosphate tribasic octahydrate used for?
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Magnesium phosphate tribasic octahydrate is primarily used as a laboratory reagent in chemical synthesis and analytical chemistry. It is also a valuable compound for research and development activities exploring inorganic materials and processes.
What is the CAS number and chemical formula?
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The CAS number for Magnesium phosphate tribasic octahydrate is 13446-23-6, and its chemical formula is Mg3(PO4)2 · 8H2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Magnesium phosphate tribasic octahydrate with a grade of purum p.a. and an assay of ≥97.0% (KT). TSS does not represent this product as USP, BP, or EP grade.
What are the safety and handling precautions for this chemical?
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Handling this chemical requires appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter should be used. The WGK classification is 3, indicating a high hazard to water.
How is Magnesium phosphate tribasic octahydrate packaged and shipped?
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Magnesium phosphate tribasic octahydrate is carefully packaged to ensure stability during transit and is exported globally by Tech Serve Solutions in compliance with international shipping regulations for chemical substances.
How can I request a sample or quote?
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To request a sample or a quotation for Magnesium phosphate tribasic octahydrate, please contact the Tech Serve Solutions sales team directly through our website or by phone.
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