50% H₂O₂ (Hydrogen Peroxide) Comprehensive Guide: Properties, Applications, and Where to Buy in 2026
50% H₂O₂ (Hydrogen Peroxide, industrial-grade hydrogen peroxide, CAS 7722-84-1) is a strong oxidizing agent that is a clear, colorless liquid and is infinitely soluble in water. At a 50% concentration, H₂O₂ is a key industrial chemical used for wastewater treatment (oxidation of organic compounds, decolorization, and deodorization), bleaching of pulp and textiles, sterilization of medical and food equipment, surface treatment of electronic components, and dozens of other applications. Loc Thien Chemicals supplies 50% H₂O₂ for B2B use, imported from Thailand, South Korea, Bangladesh, and Taiwan—complete with a Certificate of Analysis (COA) and Material Safety Data Sheet (MSDS) for each batch.
This article is a comprehensive guide to 50% H₂O₂ for engineers and industrial chemical buyers: properties, oxidation mechanisms, 5 main applications, safety guidelines for high concentrations, storage, and reputable suppliers.
5 Key Points to Remember:
- 50% H₂O₂ (CAS 7722-84-1) — a strong oxidizing agent that decomposes into H₂O + O₂, leaving no toxic residues.
- A 50% concentration is considered heavy industrial grade — causes severe skin corrosion and immediate chemical burns. Full-body PPE is mandatory.
- 5 Key Applications: Wastewater treatment (AOP/Fenton), paper and textile bleaching, CIP disinfection, textile dyeing, electronics and semiconductors.
- Storage: Avoid temperatures >40°C, direct light, and heavy metals — decomposition produces O₂, which can cause explosions in sealed containers.
- B2B Purchasing: Imported 50% H₂O₂, get a quote in 15 minutes via hotline 0979 891 929; COA/MSDS provided per batch.
What is 50% H₂O₂? Physical and Chemical Properties
Hydrogen Peroxide (H₂O₂, hydrogen peroxide) is the simplest peroxide—a clear, colorless liquid with strong oxidizing properties. At a 50% concentration (w/w), H₂O₂ is an industrial chemical that must be transported and stored under strictly controlled conditions.
H₂O₂ naturally decomposes into water and oxygen: 2H₂O₂ → 2H₂O + O₂↑. This is both an advantage (leaves no toxic residue) and a challenge (the release of O₂ gas creates pressure in sealed containers, and heat catalyzes decomposition). The decomposition rate doubles for every 10°C increase in temperature.
| Criterion | 50% H₂O₂ (Hydrogen Peroxide) |
|---|---|
| CAS Number | 7722-84-1 |
| Formula | H₂O₂ |
| Commercial Concentrations | 50% w/w (industrial), 35%, 30% (technical), 3–6% (medical) |
| Density (50%, 20°C) | ~1.20 g/mL |
| pH | 3–5 (mildly acidic, stabilized with phosphoric acid) |
| Boiling point | ~114°C (decomposes before boiling) |
| Packaging specifications | 35 kg can · 200 L drum · 1,000 L IBC |
| Documentation | COA · MSDS/SDS · VAT Invoice |
5 Main Applications of 50% H₂O₂
1. Wastewater Treatment — Advanced Oxidation Process (AOP)
50% H₂O₂ acts as an oxidizing agent in AOP (Advanced Oxidation Process) systems: it combines with Fe²⁺ (Fenton reaction), O₃, or UV to generate hydroxyl radicals ·OH (oxidation potential 2.80 V)—twice as potent as chlorine and second only to fluorine. The ·OH radical non-selectively oxidizes hard-to-degrade organic compounds: azo dyes, pharmaceutical residues, pesticides, and stubborn COD. H₂O₂ is also used for decolorization, deodorization, and reducing BOD/COD in wastewater from textile dyeing, electroplating, and chemical industries.
2. Bleaching of Pulp & Textiles
50% H₂O₂ replaces chlorine in pulp bleaching (TCF — Totally Chlorine Free), resulting in brighter white paper that does not yellow over time and is more environmentally friendly. In the textile industry, H₂O₂ is used to bleach cotton and synthetic fibers prior to dyeing—resulting in fresher, more even, and more durable dye colors. NaOH is often used in conjunction with H₂O₂ to activate it in an alkaline environment.
3. Disinfection & Industrial Sanitation (CIP)
50% H₂O₂ (after dilution to 3–10%) is a broad-spectrum disinfectant: it kills bacteria, viruses, fungi, and spores. Main applications: CIP (Clean-in-Place) sanitation in food and beverage plants, surface disinfection of medical equipment, and swimming pool water treatment (as an alternative to chlorine for people with allergies). Significant advantages over chlorine: does not produce carcinogenic THMs (trihalomethanes) and leaves no unpleasant odor.
4. Textile Dyeing — Activation & Bleaching
In textile dyeing, 50% H₂O₂ combined with NaOH forms an alkaline-peroxide bleaching system for cotton fabrics and cellulose fibers. In addition to bleaching, H₂O₂ oxidizes residual dyes in textile dyeing wastewater—often in combination with FeSO₄ (the Fenton system) to thoroughly treat color and COD. See also: Applications of H₂O₂, NaOH in the Textile Industry.
5. Electronics & Semiconductors
50% H₂O₂ (refined to electronic-grade purity) is used to clean silicon wafers, remove photoresist, and etch circuits in semiconductor chip manufacturing. This application requires ultra-pure H₂O₂ (ppb-level), which is completely different from standard industrial-grade H₂O₂.
Safety Precautions for Handling 50% H₂O₂
⚠️ 50% H₂O₂ is an extremely strong oxidizing agent—many times more dangerous than medical-grade H₂O₂ (3%).
Skin Contact: Causes immediate white burns (skin depigmentation due to oxidation), severe stinging pain, and blistering. Rinse immediately under running water for ≥15 minutes.
Eye contact: May cause permanent blindness. Rinse eyes immediately for ≥15 minutes and seek medical attention immediately.
Inhalation: H₂O₂ vapors irritate the respiratory tract, causing coughing and difficulty breathing. Move the victim to fresh air.
Mandatory PPE: Sealed chemical-resistant goggles · Butyl/neoprene gloves · PVC chemical-resistant suit · Safety boots · Full-face respirator.
Fire and Explosion Hazards: 50% H₂O₂ is NOT self-igniting. However, when in contact with organic materials (oils, greases, solvents, fabrics, wood), the oxidation reaction may generate enough heat to cause a fire. Keep strictly isolated from all organic materials and heavy metals.
Storage of 50% H₂O₂
| Condition | Requirement |
|---|---|
| Temperature | <35°C (ideally 20–25°C). Above 40°C: rapid decomposition, risk of pressure buildup |
| Light | Avoid UV and direct sunlight — catalyzes decomposition |
| Container Material | HDPE, 99.5%+ aluminum, 316L stainless steel. ABSOLUTELY DO NOT USE: iron, copper, carbon steel |
| Ventilation | Containers must have an O₂ vent valve — do not seal completely |
| Incompatibilities | Organic compounds, solvents, heavy metals, strong alkalis, reducing agents |
Loc Thien — B2B Supplier of 50% H₂O₂
Loc Thien Chemicals imports and distributes 50% H₂O₂ from reputable manufacturers in Thailand, South Korea, Bangladesh, and Taiwan. Verified capabilities:
1. Multiple import sources: We source 50% H₂O₂ from multiple manufacturers — ensuring a stable supply that is not dependent on a single source.
2. Nationwide network of 6 warehouses: Warehouses in Ho Chi Minh City, Ba Ria-Vung Tau, Dong Nai, Da Nang, Can Tho, and Bac Ninh. H₂O₂ is stored under temperature-controlled conditions with proper ventilation in accordance with standards.
3. COA/MSDS for Each Batch: Each imported batch is accompanied by a COA (actual concentration, stability, impurities) and an MSDS/SDS.
4. Technical consulting: Assistance with selecting the optimal H₂O₂ concentration, advice on dosing equipment and safety, and guidance on integration into Fenton/AOP systems.
Frequently Asked Questions About 50% H₂O₂
How does 50% H₂O₂ differ from 3% medical-grade H₂O₂?
50% H₂O₂ is a heavy-duty industrial chemical with a concentration 17 times higher than that of medical-grade H₂O₂ (3%). Skin contact with 50% H₂O₂ causes immediate chemical burns; 3% H₂O₂ causes only mild irritation. Never use 50% H₂O₂ for medical purposes without diluting it according to proper procedures.
How does 50% H₂O₂ decompose? Is it dangerous?
H₂O₂ decomposes naturally: 2H₂O₂ → 2H₂O + O₂↑. At a 50% concentration, 1 liter of H₂O₂ produces approximately 165 liters of O₂ gas upon complete decomposition. If stored in a sealed container without a vent valve, the buildup of O₂ pressure can cause the container to explode. Always store it in a container with a vent valve.
How much does 50% H₂O₂ cost? Where can I buy it?
The price of 50% H₂O₂ depends on the source of import (Thailand, South Korea, Bangladesh, Taiwan), quantity, and shipping distance. Loc Thien Chemicals provides B2B quotes within 15 minutes—contact the hotline at 0979 891 929. Please have the following information ready: estimated volume (metric tons/month), delivery location, and intended use.
Can 50% H₂O₂ replace chlorine in water treatment?
Yes, in many applications. H₂O₂ has advantages over chlorine: it does not produce carcinogenic THMs, leaves no odor, and does not increase TDS. Disadvantages: it is more expensive than chlorine, requires precise dosing equipment, and does not provide residual disinfection. The choice depends on the specific requirements of the system.
How long can 50% H₂O₂ be stored?
Under ideal conditions (20–25°C, protected from light, in a clean HDPE container), 50% H₂O₂ loses <1% of its concentration per month. At 35°C, the decomposition rate increases 3–5 times. Always check the actual concentration before use if the product has been in storage for more than 3 months.
Get a Quote for 50% H₂O₂ in 15 Minutes
Need 50% H₂O₂ for wastewater treatment, bleaching, disinfection, or electronics? Get a fast, accurate quote with all necessary documentation.
Hotline: 0979 891 929 | Website: hoachatlocthien.com
Please have the following ready: estimated quantity · intended use · delivery location.
Commitment: quote within 15 minutes · COA/MSDS per batch · on-time delivery · technical support.
LOC THIEN INVESTMENT AND DEVELOPMENT CO., LTD.
- Address: 452/6B Provincial Road 10, Binh Tri Dong Ward, Binh Tan District, Ho Chi Minh City
- Phone: 028 6269 5669 - 028 6269 5662
- Hotline: 0979 891 929
- Website: hoachatlocthien.com