Hydrogen Peroxide 50% (H2O2 50%) is a powerful, versatile oxidising agent and disinfectant in a high-purity, technical-grade liquid form. This concentrated 50% hydrogen peroxide solution is ideal for industrial, commercial, and advanced cleaning applications that require maximum strength and efficiency. Unlike dilute household versions (3-12%), our 50% H2O2 delivers superior bleaching, sanitising, and oxygenating power while decomposing naturally into water and oxygen, making it an environmentally friendly choice. Buy hydrogen peroxide 50% online today for fast shipping in secure packaging. Available in various sizes to suit your needs, including drums and totes for bulk purchasers. Used for water treatment, aquaculture, hydroponics, cleaning, and bleaching.

Key Features of Our Hydrogen Peroxide 50%:

Concentration: 50% w/w (high-strength, stabilised for extended shelf life)
Purity: Technical/industrial grade, clear and colourless
Eco-Friendly: Breaks down into H2O and O2 no harmful residues
Multi-Purpose: Strong oxidiser for disinfection, bleaching, and chemical processes
Stable Storage: Less than 1% decomposition per year when stored properly (cool, dark, vented area)

Important Safety Note: Hydrogen Peroxide 50% is a concentrated oxidiser and must be diluted before most uses. It is corrosive to skin, eyes, and mucous membranes. Always wear PPE (gloves, goggles, protective clothing), work in a well-ventilated area, and follow SDS guidelines. Not for direct human or animal contact without dilution. Professional/industrial use recommended.

Common Applications of 50% Hydrogen Peroxide: high-concentration H2O2 is widely used in:

Water and wastewater treatment (odour control, disinfection)
Aquaculture and pond management (oxygenation, algae/parasite control)
Hydroponics and gardening (root zone oxygenation, disease prevention)
Industrial cleaning and surface sanitisation
Textile/paper bleaching and stain removal
Mining and chemical processing

Recommended Dosing Rates and Dilution Guidelines 50% hydrogen peroxide is never used undiluted for most applications. Always dilute with clean (preferably distilled) water and test small areas first. Below are general dosing tables for popular use cases, based on industry standards and safe practices. Dosages are approximate; adjust accordingly based on specific conditions and consult experts for large-scale use.

1. Aquaculture & Pond Water Treatment (Algae Control, Oxygenation, Parasite Treatment)

Application	Target Concentration	Amount of 50% H2O2 per 1,000 Litres (264 Gallons) of Water	Notes
General oxygenation	0.25-0.5% (2,500-5,000 ppm)	500-1,000 mL	For low oxygen levels, apply slowly
Algae/parasite control	0.05-0.1% (500-1,000 ppm)	100-200 mL	Short-term treatment; monitor fish stress
Severe infections (e.g., fungus)	Up to 0.2% (2,000 ppm)	Up to 400 mL	Use with caution; aerate heavily

2. Hydroponics & Plant Root Zone Treatment (Root Rot Prevention, Oxygen Boost)

Application	Target Concentration	Amount of 50% H2O2 per 10 Litres (2.6 Gallons) Nutrient Solution	Notes
Preventive oxygenation	0.01-0.03% (100-300 ppm)	2-6 mL	Add weekly or as needed
Mild root rot treatment	0.05% (500 ppm)	10 mL	Short exposure (1-2 hours), then flush
Strong sterilization	0.1-0.2% (1,000-2,000 ppm)	20-40 mL	For system cleaning (no plants present)

3. Surface Disinfection & Cleaning (Industrial/Commercial)

Application	Target Concentration	Dilution Ratio (50% H2O2: Water)	Notes
General sanitizing	3-6%	1:16 to 1:8	Spray/wipe; effective against bacteria/viruses
Heavy-duty mould/mildew removal	6-10%	1:8 to 1:5	Apply, let sit 10-15 min, rinse
Equipment sterilization	6-35%	1:8 to undiluted (for non-contact)	Food-grade surfaces; rinse thoroughly

Quick Dilution Tip: To make 3% H2O2 (common household strength): Mix 1 part 50% H2O2 with ~16 parts water.

4. Water Treatment & Odour Control (Municipal/Industrial)

Application	Typical Dosage	Amount of 50% H2O2 per 1,000 Litres of Water	Notes
Odour control (H2S removal)	1-5 ppm active O2	5-25 mL	Inject upstream; monitor residuals
Disinfection/oxidation	10-50 ppm H2O2	20-100 mL	Alternative to chlorine

For precise calculations or custom applications, use our free dilution calculator or contact our team. Why Buy Hydrogen Peroxide 50% From Us?

Competitive bulk pricing
Fast, secure shipping worldwide
Expert support for safe handling and usage
High-quality, stabilised formula for longer shelf life

Order your 50% hydrogen peroxide today and experience the power of concentrated H2O2! For quotes on larger quantities or technical data sheets, reach out now.

Technical Reference

Technical Specifications

Property	Detail
Chemical Name	Hydrogen Peroxide
IUPAC Name	Oxidanyl
Common Names	H2O2, Hydrogen Dioxide, Peroxide, Oxygenated Water
Molecular Formula	H₂O₂
Molecular Weight	34.01 g/mol
CAS Number	7722-84-1
Concentration / Grade	50% w/w, Technical Grade
Physical State	Liquid
Appearance	Clear, colourless liquid
Odour	Slightly sharp, characteristic odour
Density	Approximately 1.195 g/mL at 20°C
pH (of solution)	1.0–2.0 (neat, 50% solution at 20°C)
Boiling Point	114°C (50% aqueous solution)
Freezing Point	Approximately −52°C (50% aqueous solution)
Vapour Pressure	Approximately 9.9 hPa at 20°C
Solubility	Completely miscible with water in all proportions
Stabilisers	Low-level phosphate or stannate stabilisers (technical grade); confirm specification with SDS
UN Number	UN 2014
ADG Class	Class 5.1 (Oxidising Agent) with Subsidiary Risk 8 (Corrosive)
Packing Group	II
Hazchem Code	2X

Applications & Use Cases

Water & Wastewater Treatment: Oxidation of dissolved iron, manganese, hydrogen sulphide, and organic contaminants in potable water and industrial effluent streams; control of biological oxygen demand (BOD) and chemical oxygen demand (COD).
Cooling Tower Disinfection: Periodic or continuous dosing for control of Legionella spp., biofilm, and algae in open recirculating cooling water systems, in accordance with AS/NZS 3666 guidelines.
Swimming Pool & Spa Sanitation: Alternative to chlorine-based sanitisers for pools operated on peroxide-based programmes (typically in combination with copper/silver ionisation or UV systems); shock dosing for algae and organic load control.
Aquaculture: Treatment of ectoparasites including sea lice (Caligus spp., Lepeophtheirus spp.) in marine and freshwater finfish production; oxygenation of high-density aquaculture systems.
Hydroponics & Horticulture: Root zone oxygenation, pathogen suppression (Pythium spp., Fusarium spp.), and nutrient solution disinfection in recirculating hydroponic systems.
Food & Beverage Processing: CIP (Clean-in-Place) circuit disinfection; aseptic packaging sterilisation (Tetra Pak and similar systems); surface sanitation on food contact materials (food-grade grade H2O2 required for direct food contact applications).
Textile & Pulp Bleaching: Cellulose fibre brightening and bleaching as a chlorine-free alternative in textile, paper, and pulp manufacturing operations.
Industrial Surface Cleaning & Decontamination: Biodecontamination of cleanrooms, pharmaceutical manufacturing environments, and laboratory spaces; mould and microbial remediation on hard surfaces.
Chemical Synthesis & Manufacturing: Epoxidation, hydroxylation, and other oxidation reactions as a clean oxidant in organic synthesis; production of sodium percarbonate, peracetic acid, and other peroxide-derived chemicals.
Mining & Mineral Processing: Cyanide detoxification in tailings dams; leaching oxidant in gold extraction circuits; treatment of acid mine drainage.
Soil & Groundwater Remediation: In-situ chemical oxidation (ISCO) of petroleum hydrocarbons, BTEX, chlorinated solvents, and other organic contaminants (commonly catalysed via Fenton’s reagent with ferrous sulphate).
Odour Control: Oxidation of hydrogen sulphide and mercaptans in wastewater collection systems, pump stations, and industrial exhaust scrubbers.
Electronics & Precision Cleaning: Microelectronics substrate cleaning (Piranha solution with sulphuric acid — specialist use only); PCB manufacture and cleaning applications.

Dosing Rates & Guidelines

All dosing rates below are indicative based on standard Australian industry practice. Actual rates must be verified by site-specific jar testing, process analysis, or qualified advice. Dosing is concentration-dependent — the rates below apply to 50% w/w hydrogen peroxide unless otherwise stated.

Application	Minimum Effective Dose	Maximum Safe / Typical Upper Dose	Units	Notes & Conditions
Potable water treatment (iron/Mn oxidation)	0.5	5.0	mg H₂O₂/L (as active)	pH 6.5–8.5; contact time ≥ 10 min before filtration; residual H₂O₂ must be removed prior to distribution. Confirm with water authority. Not approved for all potable applications — verify with AS/NZS 4020.
Wastewater / effluent oxidation (H₂S removal)	2.0	10.0	mg H₂O₂/L per mg/L H₂S	Typical ratio: 2–4 mg H₂O₂ per mg/L H₂S; higher organic loads require increased dose. Continuous metering preferred.
Cooling tower disinfection (Legionella control)	50	200	mg/L (as active H₂O₂)	Shock dose: 100–200 mg/L; maintenance residual: 50–80 mg/L. Contact time ≥ 30 min. Reference AS/NZS 3666.2. Confirm compatibility with metallurgy (especially copper alloys) before use.
Swimming pool — shock / oxidation dose	50	100	mg/L (as active H₂O₂)	Equivalent to approximately 10–20 mL of 50% H₂O₂ per 1,000 L pool water. Do not use simultaneously with chlorine-based products. pH 7.0–7.6. Allow 24–48 hours before swimming if high dose applied.
Swimming pool — peroxide-based maintenance	30	80	mg/L (as active H₂O₂)	Maintain residual 30–50 mg/L in combination with ionisation or UV systems. Test with peroxide-specific test strips or photometric analyser; standard DPD chlorine tests are not compatible.
Aquaculture — sea lice / parasite bath treatment	1,200	1,800	mg/L (as active H₂O₂); 30-min bath	Dose is species- and temperature-dependent. Reduce dose at water temperatures > 14°C. Atlantic salmon: 1,500 mg/L standard; observe fish behaviour throughout. APVMA registration required for therapeutic use — confirm current registration status. Aerate tanks post-treatment.
Hydroponics — nutrient solution treatment	0.3	3.0	mL of 50% H₂O₂ per 10 L nutrient solution	For root zone oxygenation and pathogen suppression: 2–3 mL per 10 L. Avoid exceeding 50 mg/L active concentration in solution at plant root contact. Verify impact on beneficial microorganisms in organic systems.
Surface disinfection (hard surfaces)	0.5% v/v	3.0% v/v	% v/v (diluted working solution)	Dilute 50% H₂O₂ to working concentration (e.g., 1:17 dilution for 3% v/v working solution). Contact time: 5–30 min depending on target organism. Rinse food contact surfaces thoroughly post-application.
CIP circuit disinfection (food & beverage)	0.5	2.0	% v/v (working solution)	Food-grade H₂O₂ required for food contact applications. Contact time 20–30 min at ambient temperature; efficacy improves with heat (40–50°C). Confirm material compatibility with stainless steel grades, seals, and gaskets.
ISCO groundwater remediation (Fenton’s reagent)	0.5	10	% v/v (injected H₂O₂ solution)	Catalysed with ferrous sulphate (Fe²⁺); typical Fe:H₂O₂ molar ratio 1:5 to 1:20. Subsurface injection rate site-specific. Geotechnical and hydrogeological assessment required. Exothermic reaction — monitor subsurface temperature.
Cyanide detoxification (mining)	1.5	5.0	kg H₂O₂ (as 100%) per kg CN⁻	Stoichiometric ratio: ~1.35 kg H₂O₂ per kg CN⁻ for oxidation to cyanate. Copper catalyst typically employed. Alkaline pH (10–11) preferred. Compliance with relevant state mine site environmental licence conditions required.

Dilution Instructions

Important: Hydrogen peroxide 50% is a strong oxidising agent and a corrosive liquid. All dilution operations must be conducted by trained personnel wearing full PPE (see Safety & Handling section). Never add water to concentrated hydrogen peroxide — always add hydrogen peroxide to water.

Equipment Required: HDPE, polypropylene (PP), or 316L stainless steel containers and dosing equipment; nitrile or neoprene gloves (minimum); chemical splash goggles; face shield; PVC apron or chemical-resistant coveralls; calibrated measuring jug or metering pump; eyewash station within 10 seconds travel.
Order of Addition — Cardinal Rule: Always add the hydrogen peroxide to the water, never the reverse. Adding water to concentrated H₂O₂ can cause vigorous splashing and localised exothermic decomposition.

Calculate the volume of 50% H₂O₂ required using the dilution formula: C₁V₁ = C₂V₂ — for example, to prepare 10 litres of a 3% working solution: V₁ = (3% × 10 L) / 50% = 0.6 L of 50% H₂O₂ added to 9.4 L of water.
Fill the clean HDPE or PP dilution vessel with the required volume of clean, cold water first (≤ 20°C preferred). Use demineralised or low-conductivity water where possible; high concentrations of transition metal ions (iron, manganese, copper) in hard tap water can accelerate decomposition.
Don all required PPE before handling the concentrated product. Inspect gloves and face shield for damage before use.
Slowly and carefully measure the required volume of 50% H₂O₂ from the original container using a dedicated HDPE measuring vessel or calibrated metering pump. Never use metal scoops or contaminated utensils.
Add the measured 50% H₂O₂ slowly to the water with gentle mixing. If mixing by hand, use a PP or

Weight	24 kg
Dimensions	28 × 28 × 38 cm
Volume	5L, 20L

0402 981 808

0402 981 808

Hydrogen Peroxide 50%