What is Magnesium Oxide Heavy (Magnesium Oxide · Inorganic Salts / Minerals)?
Magnesium oxide is an inorganic white salt formed by magnesium and oxygen (CAS 1309-48-4). It is slightly soluble in water; it partially dissolves in stomach acid and is absorbed. Due to its high elemental content and low cost, it is one of the most common magnesium sources; it is also used as an antacid and osmotic laxative.
- Molecular formula: MgO
- CAS number: 1309-48-4
- Form: Heavy / Powder
- Quality: Food / Pharmaceutical Grade
- MgO contains ~60% elemental Mg by weight (one of the highest ratios); 500 mg MgO ≈ 300 mg elemental Mg. Due to low solubility, this high ratio does not directly translate to the amount absorbed.
What is Magnesium Oxide · Inorganic Salts / Minerals Used For? Why is it Used?
Magnesium oxide is widely preferred due to its high elemental magnesium content and low cost; it provides high magnesium with small doses. Due to its low solubility, its bioavailability is lower than that of organic salts, and it can cause diarrhea at high doses; it is suitable for formulations requiring economic and high-loading properties.
Main areas of use: Dietary Supplements, Anti-caking Agent, Pigment Carrier, Pharmaceutical Formulation, Cosmetics, Chemical Industry.
Usage in Dietary Supplements
- High-dose magnesium source: Thanks to its high elemental ratio, it provides more magnesium in small tablets/capsules; it is a key raw material in daily magnesium supplements.
- Economical raw material: It is significantly cheaper compared to organic magnesium salts; it provides cost advantages in mass production.
- Combined formulations: It increases the elemental magnesium load in multivitamin/mineral mixes with B6, zinc, calcium, or herbal extracts.
- Constipation and antacid support: It may be included in formulations aimed at digestive comfort due to its osmotic laxative and antacid effects.
Usage in the Food Industry
- E530 additive: Used as an acidity regulator and anti-caking agent under the E530 code as a food additive (EU 1333/2008, quantum satis).
- Areas of use: Acidity regulation in cocoa/chocolate, anti-caking in salts and powders, magnesium enrichment in milk powder applications.
- Enrichment source: It is an authorized magnesium compound for adding magnesium to foods under TR and EU regulations.
Effects on Health
Magnesium is a mineral that plays a role in many fundamental functions in the body. The main functions authorized/evaluated by the European Food Safety Authority (EFSA):
- Energy metabolism: Magnesium contributes to normal energy-yielding metabolism (EFSA).
- Reduction of fatigue: Magnesium contributes to the reduction of fatigue and asthenia (EFSA).
- Muscle function: Magnesium contributes to normal muscle function (EFSA).
- Nervous system: Magnesium contributes to the normal functioning of the nervous system (EFSA).
- Bones and teeth: Magnesium contributes to the maintenance of normal bones and teeth (EFSA).
- Psychological function and electrolyte balance: Magnesium contributes to psychological function, electrolyte balance, protein synthesis, and cell division (EFSA).
Usage Limits in Dietary Supplements
- Nutrient Reference Value (NRV): Mg NRV 375 mg (1169/2011).
- Tolerable Upper Intake Level (EFSA): EFSA: UL 250 mg/day for magnesium added to supplements/water (NOAEL 250, LOAEL ~360; mild diarrhea is the most sensitive sign; natural Mg in food is excluded).
- TR legislation (TETGK): Magnesium is an authorized mineral in TR Dietary Supplements legislation; daily intake is determined considering NRV and upper safe levels. A specific numerical upper limit for oxide could not be verified.
The UL applies only to easily soluble supplement forms; NRV (375 mg) is a label reference, not an upper limit.
Technical Specifications
| Parameter | Value |
|---|---|
| Purity | 99.5% |
| Appearance | White Powder |
| Moisture | ≤5.0 % |
| Solubility | Insoluble in Water |
Scientific Studies
The following independent researches relate to the bioavailability, usage, and effects of this mineral (levels of evidence are specified):
- PubMed 2407766 — Human study comparing the bioavailability of magnesium citrate and oxide.
- PubMed 31587548 — Randomized double-blind placebo-controlled study evaluating the effect of magnesium oxide in chronic constipation.
- PubMed 6667383 — Study examining characteristics of hypermagnesemia in patients with functional constipation taking daily magnesium oxide.
Technical Documents and Supply — Asuka Kimya
You can contact Asuka Kimya for SDS, TDS, CoA and supply conditions for Magnesium Oxide Heavy.
References
- ec.europa.eu
- efsa.europa.eu
- ods.od.nih.gov
- resmigazete.gov.tr
- pubmed.ncbi.nlm.nih.gov
- pubmed.ncbi.nlm.nih.gov
- pubmed.ncbi.nlm.nih.gov
The usage and health information on this page has been compiled from official legislation/institution sources (EFSA, NIH ODS, Turkish Food Codex, EUR-Lex) and independent scientific publications (PubMed). The product is a food supplement/food raw material; it does not aim to diagnose or treat diseases.