Overview
Hydrogen water is ordinary water enriched with dissolved molecular hydrogen (H2), a colorless, odorless gas with potential therapeutic benefits. Unlike other forms of hydrogen compounds, H2 is non-toxic and selectively targets harmful free radicals. Its use dates back to Japanese research in the 2000s, highlighting its antioxidant and anti-inflammatory properties. Today, it is marketed for wellness, athletic performance, and as an adjunct in medical therapies. Commercial production involves electrolysis or dissolving H2 gas under pressure. The concentration typically ranges from 0.5–1.6 ppm, balancing efficacy with solubility limits. Its popularity in B2B markets spans bottled beverages, infusion systems, and clinical applications.
Physical and Chemical Properties
Hydrogen water retains the basic properties of water (H2O) but includes dissolved H2 molecules, which do not alter water’s pH or taste. H2 has high diffusivity, allowing it to penetrate cell membranes and mitochondria, where it may neutralize reactive oxygen species (ROS). The solubility of H2 in water is low (1.6 mg/L at 25°C), requiring specialized equipment to achieve therapeutic concentrations. Key challenges include maintaining H2 concentration post-production, as the gas escapes easily. Packaging in airtight, aluminum-lined containers or on-site generation systems (e.g., hydrogen tablets) mitigates this. Unlike ozone or chlorine, H2 leaves no residual taste or byproducts.
Main Applications
In wellness industries, hydrogen water is promoted for its antioxidant effects, potentially reducing oxidative stress linked to aging and chronic diseases. Athletes use it to accelerate recovery by mitigating exercise-induced inflammation. Clinical research explores its role in neurodegenerative diseases, diabetes, and radiation therapy side effects, though further studies are needed. B2B applications include pre-packaged beverages, hydrogen-generating machines for clinics, and industrial-grade H2 infusion systems for spas. In agriculture, hydrogen water shows promise in enhancing crop resilience and yield, though this remains experimental.
Safety and Storage
Hydrogen water is safe for consumption, with no known toxicity at typical concentrations. However, suppliers must ensure proper labeling to distinguish it from hydrogen peroxide (H2O2), a hazardous compound. Storage requires airtight, opaque containers to prevent H2 loss and UV degradation. Aluminum or glass packaging is preferred over plastic, which is permeable to H2 gas. For industrial handling, avoid high temperatures and pressure extremes. Though H2 is flammable at concentrations above 4% in air, dissolved H2 in water poses no combustion risk. Regulatory compliance varies by region; for example, Japan recognizes it as a functional food, while the FDA classifies it as GRAS.
B2B Procurement Guide
When sourcing hydrogen water, prioritize suppliers with third-party testing for H2 concentration (measured in ppm). Verify packaging integrity—aluminum cans or pouches with barrier layers outperform PET bottles. For large-scale needs, consider on-site generators, which reduce logistics costs but require maintenance. Pricing depends on concentration, volume, and packaging. Bulk orders (e.g., 1,000+ liters) may cost $1–$2 per liter, while premium single-serve units reach $5. Contracts should specify shelf-life guarantees (typically 6–12 months) and delivery conditions (e.g., refrigerated transport for extended stability).
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