Sodium carbonate peroxyhydrate (SCP), sometimes referred to as sodium percarbonate, is a powerful, environmentally friendly oxidizing agent with a unique chemical profile that makes it indispensable across a wide spectrum of industrial applications. While it is often associated with household cleaning products, its performance and versatility in industrial settings are far more impressive — and less widely recognized.
With a high active oxygen content, low environmental impact, and solid-state stability, SCP is an increasingly popular choice for industries seeking effective oxidation without the handling hazards of liquid peroxides or chlorine-based agents.
Understanding Sodium Carbonate Peroxyhydrate
Chemical Composition and Structure
SCP is a crystalline adduct composed of sodium carbonate (Na₂CO₃) and hydrogen peroxide (H₂O₂) in a ratio of approximately 2:3. Its chemical formula is typically expressed as 2Na₂CO₃·3H₂O₂.
- Sodium Carbonate Component: Acts as a pH buffer and cleaning booster.
- Hydrogen Peroxide Component: Provides active oxygen for oxidation and disinfection.
When dissolved in water, SCP releases hydrogen peroxide, which then decomposes into water and oxygen. This decomposition is the key to its oxidizing action.
Key Technical Properties
Operations that need oxidation in liquid form can source industrial hydrogen peroxide directly, an alternative delivery format for processes where solid SCP handling is not required.
| Property | Typical Value | Industrial Significance |
| Active Oxygen Content | ~13–15% | High oxidation efficiency |
| Appearance | White granular solid | Easy handling & dosing |
| Solubility in Water | Highly soluble | Rapid release of active oxygen |
| Bulk Density | 0.8–1.2 g/cm³ | Suitable for bulk handling |
| Stability | Stable under dry storage | Long shelf life if moisture-protected |
The combination of alkalinity from sodium carbonate and oxidizing power from hydrogen peroxide makes SCP a two-in-one solution for cleaning, bleaching, and microbial control.
How Sodium Carbonate Peroxyhydrate Works
For a deeper look at sodium carbonate, the alkaline carrier in SCP, review its grades, buffering behaviour, and handling requirements before specifying a peroxyhydrate blend.
Upon dissolution:
- Immediate Dissociation – Sodium carbonate and hydrogen peroxide separate in solution.
- Active Oxygen Release – Hydrogen peroxide gradually breaks down into oxygen and water.
- Oxidative Attack – Released oxygen reacts with organic and inorganic contaminants, breaking them down into less complex, often water-soluble forms.
- Alkalinity Support – Sodium carbonate maintains a high pH environment, enhancing oxidation and aiding in saponification of fats and oils.
This dual mechanism is particularly valuable in industrial cleaning and bleaching where both alkalinity and oxidation are required simultaneously.
Industrial Applications
Textile Processing
- Bleaching Agent: SCP offers a chlorine-free bleaching solution that is gentler on fibers yet effective in removing natural colorants and impurities.
- Scouring Aid: The alkaline and oxidizing action facilitates removal of waxes, pectins, and oils from natural fibers.
Pulp and Paper Industry
- Brightening: SCP can be used in mechanical pulp brightening, reducing yellowing and improving paper whiteness.
- Pitch Control: Oxidizes sticky resin particles that can cause operational issues in paper machines.
Industrial Cleaning
- Food Processing Equipment: Effective against biofilms, grease, and organic deposits without leaving toxic residues.
- Beverage Industry: Common in clean-in-place (CIP) systems for tanks, pipelines, and bottling lines.
- Public Facilities & Transport: Large-scale cleaning of floors, walls, and high-contact surfaces.
Water Treatment
- Algae Control: SCP is registered in many countries for use in controlling algae in lakes, ponds, and industrial water systems.
- Oxidation of Contaminants: Breaks down iron, manganese, sulfides, and other oxidizable impurities.
Agriculture
- Irrigation System Cleaning: Prevents biofilm and mineral deposits in drip irrigation.
- Post-Harvest Sanitation: Oxidizes microbial contaminants on equipment and storage areas.
Aquaculture and Soil Treatment
- Aquatic Systems: Maintains water quality in fish farms and ponds.
- Soil Treatment: Enhances soil health by oxidizing organic matter.
- Equipment Cleaning: Sanitizes tools and containers used in farming and aquaculture operations.
Household and Professional Cleaning Applications
Beyond heavy industry, sodium percarbonate is a core active ingredient in domestic and institutional cleaning formulations:
- Laundry: Brightening whites and removing tough stains as an oxygen-based bleach additive.
- Kitchen Surfaces: Cleaning countertops and cutting boards.
- Bathroom Cleaning: Eliminating mold and mildew from tiles and grout.
- Carpet Cleaning: Removing deep-seated stains and odors.
Formulators comparing oxygen boosters can also examine alkaline cleaning with sodium carbonate on its own, which explains how washing soda lifts grease and stains across institutional settings.
Advantages Over Alternative Oxidizing Agents
- Safety in Handling
Being a solid, SCP avoids the spill hazards of liquid hydrogen peroxide and the toxic vapor risks of chlorine-based chemicals.
- Environmental Profile
Breaks down into naturally occurring substances — sodium carbonate, oxygen, and water — with no harmful residues.
- Storage Stability
Longershelf life under dry conditions compared to many liquid oxidizers.
- Versatility
Suitable for hot and cold water applications, alkaline or neutral environments.
- Operational Efficiency
Combines alkalinity and oxidation in one material, reducing the need for multiple chemicals in a process.
Comparative Analysis with Other Cleaning Agents
| Feature | Sodium Percarbonate | Chlorine Bleach | Hydrogen Peroxide |
| Eco-Friendliness | High | Low | Moderate |
| Fabric Safety | High | Low | High |
| Odor | None | Strong | Mild |
| Surface Compatibility | Broad | Limited | Broad |
Handling, Storage, and Safety Considerations
While SCP is safer than many oxidizers, it still demands industrial-grade care:
- Moisture Control: Store in a cool, dry place to prevent premature decomposition.
- Dust Management: Use dust extraction systems to avoid inhalation exposure.
- Compatibility: Avoid direct contact with strong acids, reducing agents, or combustible materials.
- PPE: Gloves, goggles, and protective clothing are recommended during handling.
Storage and Shelf Life
To maintain efficacy over time:
- Packaging: Use airtight containers to prevent moisture absorption.
- Temperature: Store at temperatures below 30°C.
- Shelf Life: Typically stable for up to two years under proper conditions.
Packaging and Logistics
SCP is available in various packaging options to suit industrial operations:
- 25 kg Bags: Ideal for medium-scale usage.
- Big Bags (500–1000 kg): Cost-effective for large-scale continuous operations.
- Custom Packaging: Available for automated dosing systems.
Istay Kimya provides reliable export logistics from Turkey, ensuring product integrity during transit, with moisture-proof packaging to protect quality.
Quality and Regulatory Compliance
High-quality SCP should meet:
- Active Oxygen Content Specifications according to application requirements.
- Particle Size Distribution suited to the dosing system.
- Purity Standards for specific industries (e.g., food-grade cleaning).
Istay Kimya’s sourcing and QC processes ensure consistent, compliant product batches.
Related Products for Industrial Cleaning and Oxidation
Market Trends and Procurement Insights
- Shift from Chlorine to Peroxygen Chemistry: Driven by environmental compliance and worker safety concerns.
- Rising Demand in Sustainable Operations: SCP aligns with sustainability goals due to its decomposition into benign products.
- Global Supply Considerations: Turkey’s strategic position offers competitive lead times and pricing for Europe, Middle East, and beyond.
Procurement strategies increasingly focus on suppliers that can guarantee consistent quality, flexible packaging, and just-in-time delivery — all areas where Istay Kimya excels.
FAQs
Q1: Is sodium carbonate peroxyhydrate safe for food-contact equipment cleaning?
Yes, when used according to regulatory guidelines. It leaves no harmful residues and decomposes into water, oxygen, and sodium carbonate.
Q2: Can SCP replace chlorine in bleaching applications?
In many cases, yes. It provides effective bleaching without producing chlorinated by-products, making it safer for materials and the environment.
Q3: How should SCP be stored to maximize shelf life?
Store in sealed, moisture-proof packaging in a cool, dry environment away from incompatible materials.
Q4: Is SCP compatible with caustic soda in cleaning solutions?
Yes, it can be combined with caustic soda for enhanced cleaning and oxidation, especially in heavy-duty industrial degreasing.
Q5: Can sodium percarbonate be used on colored fabrics?
Yes, it is safe for most colored fabrics, though a patch test is recommended before full-scale use.
Q6: Is it effective against mold and mildew?
Yes, it is known to remove and prevent mold and mildew growth on tiles, grout, and other surfaces.
Q7: Is sodium percarbonate safe for septic systems?
Yes, it decomposes into oxygen, water, and sodium carbonate, posing no harm to septic systems.
Q8: Can it be used in dishwashers?
Yes, it can enhance cleaning efficiency when added to dishwasher cycles.