Manganese lactate is an organic chemical compound, a salt of manganese and lactic acid with the formula Mn(C3H5O3)2. The compound forms light pink crystals, soluble in water, forming crystalline hydrates. It is often used as a dietary supplement due to manganese’s role in several important bodily functions.
Properties
Manganese lactate forms light pink crystals. It is soluble in water and ethanol.It forms crystalline hydrates of composition Mn(C3H5O3)2•n H2O, where n = 2 and 3. Each lactate is a bidentate ligand. Two water molecules coordinate directly to the metal as well, cis to each other, to complete the octahedral cluster. In the trihydrate, the third water molecule is involved in hydrogen-bonding further away in the crystal structure.
- Chemical formula: C6H10MnO6
- Molar mass: 233.08 g/mol
- Appearance: Pink crystals
- Solubility in water: Very soluble
Synthesis
Dissolution of manganese carbonate in lactic acid solution:
MnCO3 + 2C3H6O3 → Mn(C3H5O3)2 + CO2 + H2O
Natural Occurrence
- Manganese lactate is not typically found in nature in its pure form. However, manganese itself is a naturally occurring element found in the Earth’s crust, often in minerals like pyrolusite (MnO2 and rhodochrosite (MnCO3).
- Lactic acid, the other component of manganese lactate, is commonly found in fermented foods, as well as being produced by the human body during anaerobic respiration.
Industrial and Synthetic Production
Manganese lactate is synthetically produced by reacting manganese salts, like manganese carbonate or manganese oxide, with lactic acid. This reaction typically takes place in aqueous solutions. The compound is used in applications where manganese is needed in a soluble, bioavailable form.
Uses
- Dietary Supplements: Manganese lactate is commonly used as a supplement to ensure sufficient manganese intake, especially for individuals who may have dietary deficiencies.
- Food Additives: In some cases, manganese lactate is used as a food additive to fortify foods with manganese.
- Medical Use: Manganese lactate may be used in medical treatments for manganese deficiency or to support certain biochemical processes in the body.
Side Effects
- Excess Intake: Excessive manganese intake can lead to toxicity, particularly in individuals with liver or kidney disease. Symptoms of manganese toxicity may include neurological issues like tremors, muscle spasms, and other movement disorders, a condition called manganism.
- Interactions: Manganese supplements may interact with certain medications, including calcium and iron supplements, which can affect absorption.
