Hydrogen water is simply water that has been infused with dissolved molecular hydrogen gas, represented by the chemical formula H2. A cost-effective and accessible method for preparation involves using metallic magnesium. This method utilizes a straightforward chemical reaction to generate the gas directly within a sealed container of water. Using a magnesium source allows individuals to produce hydrogen-rich water at home without needing specialized, expensive machinery.
The Chemical Process: How Magnesium Creates Hydrogen
The process relies on a reduction-oxidation reaction that occurs when elemental magnesium metal (Mg) comes into contact with water (H2O). The core reaction yields molecular hydrogen gas (H2) and magnesium hydroxide (Mg(OH)2), following the balanced equation: Mg + 2H2O → Mg(OH)2 + H2.
The goal of this reaction is the release of H2 gas, which dissolves into the liquid, creating hydrogen water. The magnesium hydroxide byproduct is a slightly alkaline compound that dissolves minimally, resulting in a slightly elevated pH compared to the starting water. As the reaction continues, the magnesium source is consumed as it converts into magnesium hydroxide. The container must be sealed to prevent the newly formed hydrogen gas from escaping, ensuring effective saturation.
Step-by-Step Guide for Preparation
Creating hydrogen water with magnesium requires specific materials to ensure maximum gas saturation. You will need a high-purity, food-grade magnesium source, typically a stick or specialized tablet. A sealable, non-permeable container, such as glass or stainless steel, is also necessary, along with clean, filtered water.
First, thoroughly clean the magnesium source by rinsing it with water before its initial use, then place it into the container. Next, fill the container completely with filtered water, minimizing the air space at the top. This reduction of headspace limits the volume into which the generated hydrogen gas can diffuse before dissolving into the water.
Immediately after adding the magnesium and the water, the container must be sealed tightly with an airtight lid. This sealing forces the H2 gas produced by the reaction to remain in contact with the water, promoting dissolution. The waiting time for maximum concentration varies by product, but six to twelve hours is often suggested for optimal saturation.
Some magnesium products are designed to react more rapidly, sometimes achieving a usable concentration in as little as one to three hours. You may notice tiny bubbles rising from the magnesium source during the saturation period, which is the visible sign of hydrogen gas being generated. Once the designated time has passed, the hydrogen water is ready for consumption, and the magnesium stick can be removed, rinsed, and reused.
Ensuring Quality and Safe Consumption
When choosing a magnesium source, select high-grade metallic magnesium specifically intended for water preparation to avoid contaminants; industrial-grade products can introduce unwanted substances. Always confirm the product is at least 99% pure metallic magnesium to ensure the desired chemical reaction occurs cleanly.
The hydrogen gas, being the smallest molecule, begins to escape as soon as the container is opened. To gain the maximum benefit, consume the prepared hydrogen water as soon as possible after saturation. Even in a tightly sealed, non-permeable container, the concentration of dissolved hydrogen will significantly diminish after six to twelve hours.
The magnesium hydroxide byproduct remaining in the water is generally considered safe, but it is the active ingredient in some laxatives. Consistent, excessive consumption may lead to digestive discomfort, such as diarrhea. Monitoring the magnesium product’s lifespan is necessary; a stick will deplete over time and may require replacement every three to six months, depending on usage, to maintain effective hydrogen generation.