Magnesium phosphate Mg₃(PO₄)₂ – Producer and distributor

Magnesium phosphate Mg₃(PO₄)₂ – high purity, competitive pricing, 24-hour delivery. We are an experienced distributor of chemical raw materials, offering this compound in various purities: technical, pure, and pro analytical (p.a.), as well as in hydrated forms for industrial and laboratory applications.

Our product is dedicated to dietary supplement and pharmaceutical manufacturers, the food industry (additive E342), research and analytical laboratories, feed and fertilizer producers, and companies seeking high-quality magnesium mineral salts for technical applications. Each delivery includes a Certificate of Analysis (CoA), a Safety Data Sheet (SDS), and full technical documentation. We guarantee batch-to-batch consistency, competitive wholesale prices, and technical support.

Main applications: source of magnesium and phosphate ions in dietary supplements and mineral preparations, food additive E342 (stabilizer, anti-caking agent), raw material for producers of homeopathic preparations, raw material for the pharmaceutical and feed industry, use in the production of mineral fertilizers and as a laboratory reagent.

Basic Specification – Magnesium Phosphate Mg₃(PO₄)₂

Chemical formula, CAS number and product form

Detailed parameters for a specific batch are available in the Certificate of Analysis (CoA).

Available purities and packaging

We offer magnesium phosphate in the following purities: technical, pure, and pro analytical (p.a.). The product is available in packages ranging from 1 kg (laboratory samples) to big bags and bulk deliveries for industrial customers. Customized packaging is also available.

Magnesium phosphate – price and pricing factors

The price of magnesium phosphate depends on several key factors: the selected product purity (technical, pure, p.a.), the ordered volume, the product form (anhydrous or hydrated), and the current market conditions for mineral resources. We offer preferential pricing and volume discounts for regular customers.

Order a sample or request a wholesale quote

Contact our sales department to receive a current price offer, a test sample or technical product documentation.

What is magnesium phosphate?

Definition, chemical formula and mineral salts of magnesium

Magnesium phosphate is an inorganic chemical compound from the mineral salt group, a combination of magnesium and phosphoric acid. Its chemical formula is Mg₃(PO₄)₂, and it is commercially available in both anhydrous and hydrated forms—most commonly as the trihydrate or pentahydrate. It is one of the most important mineral magnesium compounds used in industry, food, and pharmaceuticals.

Magnesium phosphate occurs naturally in minerals such as bobierrite, being a natural component of phosphate rocks. As a chemical raw material, it is distinguished by high thermal stability, low water solubility, and good compatibility with other minerals.

Magnesium phosphate and other mineral salts – magnesium in various forms

Magnesium is found in many mineral salt forms in industry and supplementation – as citrate, carbonate, oxide, chloride, and phosphate. Magnesium phosphate is unique in that it simultaneously provides magnesium and phosphate ions, making it a particularly interesting raw material for mineral supplement manufacturers and the food industry. Compared to magnesium citrate, it is characterized by lower water solubility but higher stability in solid form, which is important in the production of tablets, powders, and mineral feeds.

Physicochemical properties of magnesium phosphate

Appearance, solubility and stability

Magnesium phosphate in its anhydrous form is a white, crystalline powder with a neutral odor. It is practically insoluble in water (solubility approximately 0.025 g/100 ml at 25°C), but soluble in dilute mineral acids. Hydrated forms may exhibit slightly higher hygroscopicity, so the product should be stored in tightly closed containers, away from moisture.

The compound exhibits high thermal stability – decomposition occurs only above 1180°C, which makes it a useful raw material in processes requiring high temperature resistance.

Chemical reactivity and characteristic reactions

Magnesium phosphate reacts with strong acids, forming soluble magnesium salts and releasing phosphoric acid. It remains stable in an alkaline environment. It exhibits neither oxidizing nor reducing properties, making it safe to store alongside most chemical raw materials.

Uses of magnesium phosphate

Food industry – additive E342, stabilizer, anti-caking agent

In the food industry, magnesium phosphate is used as a permitted food additive under the designation E342. It acts as an anti-caking agent in food powders, powdered mineral mixtures, and feed. It is also used as an acidity regulator and stabilizer in selected food categories, in accordance with EU regulations.

Dietary supplements and preparations with magnesium – the role of magnesium ions

Magnesium phosphate is a raw material used by dietary supplement manufacturers as a source of magnesium and phosphate ions in a single ingredient. Magnesium plays a crucial role in the proper functioning of the nervous, muscular, and cardiovascular systems, and its deficiency manifests itself through muscle spasms, excessive nervous excitability, and impaired energy metabolism. As a pharmaceutical raw material, magnesium phosphate is used in the production of tablets, capsules, and mineral powders.

Application in homeopathy

Magnesium phosphate is used by homeopathic manufacturers as a raw material to produce products according to their own recipes and manufacturing procedures. We supply it solely as a chemical raw material – we do not provide advice on therapeutic applications or make health claims. All health claims are the responsibility of the end manufacturer and are subject to regulations specific to the product category.

Other industrial applications

Magnesium phosphate is also used as a component of mineral fertilizers enriching the soil with magnesium and phosphorus, a raw material in the production of refractory and ceramic materials, a component of mineral feed for animals and a laboratory reagent in analytical research and chemical syntheses.

Magnesium phosphate and magnesium deficiency

Deficiency symptoms – muscle spasms, nervous system, metabolism

Magnesium is one of the most important minerals essential for proper body function. Its deficiency primarily manifests itself through muscle spasms and tremors, excessive nervous system excitability, cardiac arrhythmias, chronic fatigue, and impaired energy metabolism—magnesium participates in ATP production. Magnesium phosphate, as a raw material for the pharmaceutical and supplementation industries, allows manufacturers to create preparations that simultaneously address magnesium and phosphate deficiencies.

Magnesium phosphate vs. other forms – magnesium vs. calcium and potassium phosphate

The choice of magnesium form is crucial for manufacturers of mineral supplements and preparations. Magnesium phosphate provides both magnesium and phosphates, distinguishing it from citrate or magnesium oxide. In the mineral context, it's worth comparing it with calcium phosphate (a source of calcium and phosphates) and potassium phosphate (a source of potassium and phosphates) – each of these raw materials has different applications and mineral profiles, and their selection depends on the specific product being produced.

Safe use and storage

Classification and precautions

Magnesium phosphate in its technically pure form is not classified as a hazardous substance under Regulation (EC) No 1272/2008 of the European Parliament and of the Council (CLP/GHS). No hazard statements (H-phrases) or precautionary statements (P-phrases) have been assigned for standard industrial uses. When working with product dust, it is recommended to use personal protective equipment – ​​a dust mask (FFP2) and safety glasses – in accordance with applicable occupational health and safety regulations. The full classification is available in the safety data sheet (SDS) included with each delivery.

Storage and disposal

The product should be stored in tightly closed containers in a cool, dry place, away from moisture and strongly acidic substances. When stored properly, the shelf life is at least 2 years from the date of production. Dispose of in accordance with local chemical waste regulations – for detailed information, please refer to the safety data sheet (SDS) included with each delivery.

Technical documentation

Safety Data Sheet (SDS), CAS and EC number

Each delivery of magnesium phosphate is accompanied by complete technical documentation: a safety data sheet (SDS) compliant with the REACH regulation, a certificate of analysis (CoA) confirming the purity and parameters of the product from a given batch, a product label and – upon request – documentation of compliance with food or pharmaceutical standards.

Certificates and quality standards

Our magnesium phosphate is available in quality that meets the requirements of the FCC (Food Chemicals Codex), Ph. Eur. (European Pharmacopoeia), and technical standards. Detailed information on available certificates and standards for a given product batch is available upon request.