Sodium Hypochlorite 5.25%

Product Overview

Sodium Hypochlorite 5.25% (Technical Grade) is a clear, pale yellow liquid solution of NaOCl, commonly referred to as liquid bleach or liquid chlorine. This 5.25% w/w solution provides robust oxidizing capabilities with high available chlorine content, typically assayed between 5.0 and 5.5%. It is essential for industrial water treatment, pH adjustment, and oxidative processes where consistent concentration control is critical.

With a density of approximately 1.08 g/mL at 25°C, this Technical Grade material is compatible with HDPE and glass containment. In industrial applications, Sodium Hypochlorite 5.25% acts as a powerful oxidizing agent for treating wastewater and controlling microbial growth in municipal systems. Its alkaline nature ensures stability during storage, though it must be handled with care to prevent degradation. This product is strictly intended for industrial and institutional use by professionals.

Key Properties

• Chemical Formula: NaOCl
• CAS Number: 7681-52-9
• Appearance: Clear, pale yellow liquid
• Assay (Available Chlorine): 5.0–5.5% (Typical 5.25%)
• Specific Gravity (20°C): 1.07–1.12 (Typical 1.09)
• Density (25°C): 1.08 g/mL
• Molecular Weight: 74.44 g/mol
• pH: Alkaline
• Chloride (Cl⁻): ≤ 2000 ppm
• Iron (Fe): ≤ 0.5 ppm
• Heavy Metals: ≤ 0.5 ppm total
• Sodium (Na): ≤ 2000 ppm

Common Applications

• Water Treatment: Utilized in industrial and municipal water systems to control microbial growth and maintain residual oxidation levels.
• Chemical Processing: Acts as a strong oxidizing agent in chemical synthesis and neutralization reactions.
• Bleaching Agent: Standard agent for pulp and paper bleaching and textile whitening processes.
• pH Control: Functions as an alkaline adjuster in production streams requiring precise pH modification.
• Equipment Cleaning: Used for hard surface cleaning and circulation in closed industrial systems.

Safety Precautions

Sodium Hypochlorite is corrosive and must be handled according to the SDS. Store in a cool, dry, well-ventilated area away from direct sunlight. WARNING: Never mix with acids, ammonia, or other reducing agents, as this releases hazardous chlorine gas.

Wear appropriate PPE, including chemical-resistant gloves, splash goggles, and protective clothing. Ensure emergency eyewash stations are accessible. Transported as UN 1791, Hypochlorite Solutions, Class 8, PG III.

Benefits

High Available Chlorine – 5.25% concentration ensures reliable oxidation and bleaching power.
Technical Grade Purity – Low heavy metal and residue content for consistent industrial results.
Versatile Application – Effective for water treatment, synthesis, and surface preparation.

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