Sodium Hypochlorite (NaOCl) is a clear, slightly yellow or green-tinged liquid with a characteristic chlorine odor. It is produced by reacting chlorine with a dilute sodium hydroxide solution. As a broad-spectrum biocide, it is highly effective against bacteria, viruses, algae, mold, and fungi, making it the world’s most widely used disinfectant for water and surfaces.
Moon Bright Resources supplies high-quality sodium hypochlorite in various strengths, primarily 10% and 15% available chlorine (w/v). Our product is manufactured through a continuous process, resulting in a stable solution with low iron and heavy metal content, minimizing degradation and maximizing shelf life. It is ideal for municipal water treatment, industrial effluent treatment, swimming pool sanitation, food processing sanitation, and commercial laundry bleaching.
Characteristics & Specifications
| Parameter | 10% Grade | 15% Grade |
|---|---|---|
| Available Chlorine (Cl₂) | 10% ± 0.5% | 15% ± 0.5% |
| Appearance | Pale yellow-green liquid | Yellow-green liquid |
| CAS Number | 7681-52-9 | |
| Molecular Formula | NaOCl | |
| Molecular Weight | 74.44 g/mol | |
| Free Alkali (as NaOH) | 0.1-1.0% | 0.1-1.0% |
| Iron (Fe) Content | ≤ 5 ppm | ≤ 5 ppm |
| Specific Gravity (20°C) | 1.16-1.19 | 1.21-1.24 |
| pH (as supplied) | 11.0-13.0 | 11.0-13.0 |
| Strength Retention (30 days, 20°C) | ≥ 85% | ≥ 80% |
| Standards Met | NSF/ANSI 60, AWWA B300 | NSF/ANSI 60 |
Sodium Hypochlorite Strength & Degradation
| Concentration | Typical Use | Relative Degradation Rate |
|---|---|---|
| 5% | Household bleach, small pools | Slower |
| 10-12% | Municipal water, wastewater, laundry | Moderate |
| 15% | Industrial disinfection, textile bleaching | Faster |
| >15% | Specialty industrial | Very fast (limited shelf life) |
Applications
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Drinking Water Disinfection: Primary or secondary disinfection for municipal water supplies
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Wastewater Treatment: Effluent disinfection before environmental release, odor control
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Swimming Pools: Superchlorination and routine sanitization
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Food & Beverage Industry: Sanitization of processing equipment, fruit/vegetable wash water, bottle washing
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Surface Disinfection: Hospitals, laboratories, food service, commercial facilities
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Laundry Bleaching: Whitening agent for commercial and industrial laundries
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Textile Industry: Bleaching of cotton and linen fibers
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Pulp & Paper: Bleaching of wood pulp
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Cooling Towers: Biofilm and algae control
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Odor Control: Oxidation of hydrogen sulfide and other odorous compounds
Packaging Options
| Container | Typical Volume | Net Weight (10%) |
|---|---|---|
| HDPE Jerry Can | 20 L | ~23 kg |
| HDPE Carboy | 30 L | ~35 kg |
| HDPE Drum | 200 L | ~230-240 kg |
| IBC Tote | 1,000 L | ~1,180-1,200 kg |
| Bulk Tanker | 10-25 metric tons | — |
Custom OEM packaging available for large commercial buyers.
FAQ – Frequently Asked Questions
Q1: What is the difference between sodium hypochlorite and calcium hypochlorite?
A1: Both are chlorine-based disinfectants. Sodium hypochlorite is a liquid (5-15% available chlorine) with a short shelf life (30-90 days), requiring cool, dark storage. Calcium hypochlorite is a solid (65-70% available chlorine) with a much longer shelf life (1-2 years). For large-scale water treatment with continuous dosing, sodium hypochlorite is more economical and easier to automate. For remote locations, backup disinfection, or pool shock treatment, calcium hypochlorite is preferred.
Q2: How should sodium hypochlorite be stored safely?
A2: Store in original HDPE or other compatible plastic containers in a cool, dark, well-ventilated area away from direct sunlight, heat sources, and incompatible materials (acids, ammonia, organic materials, reducing agents, metals). Temperatures above 25°C accelerate degradation; below 25°C is ideal. Avoid freezing (freezing causes stratification and container damage). Never store near acids — mixing releases toxic chlorine gas. Keep containers tightly sealed to prevent absorption of carbon dioxide (which reduces stability). Use secondary containment to prevent spills. Shelf life is 30-90 days depending on concentration and storage conditions — rotate stock and test available chlorine regularly.
Q3: Do you offer OEM / private label packaging?
A3: Yes, Moon Bright Resources provides OEM and private label services for sodium hypochlorite. We can supply under your brand name with custom-printed drums, IBC totes, or customized labels (including safety information and handling instructions). Minimum OEM order quantity is 10 metric tons.
Q4: What is your minimum order quantity (MOQ)?
A4: MOQ is 20 L (one jerry can) for sample orders, 200 L (one drum) for small commercial orders, and 10 metric tons for wholesale pricing. Bulk orders of 20 metric tons or more (full truckload) qualify for discounted rates. For OEM private label, MOQ is 10 metric tons. Bulk tanker deliveries (15-25 metric tons) are available for large, recurring orders.
Q5: How do I test the strength of sodium hypochlorite?
A5: Standard iodometric titration (thiosulfate method) is the most accurate way to measure available chlorine. Portable chlorine test kits (DPD or orthotolidine) provide rapid, approximate field measurements. For water treatment applications where precise dosing is required, we recommend regular laboratory titration or an online chlorine analyzer. We provide detailed testing protocols and technical support to our commercial customers.
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