Sodium Hypochlorite Storage
Sodium Hypochlorite (NaClO) is a corrosive oxidiser used to disinfect and chlorinate water in treatment plants. Polymaster supplies storage and dosing solutions engineered for its oxidising, corrosive properties.
OVERVIEW
What is Sodium Hypochlorite?
Sodium Hypochlorite is a corrosive chemical with the formula name NaClO. It is a powerful oxidizer and is often used as a bleach and a disinfectant. Here at Polymaster, we design and manufacture storage and dosing solutions specifically for sodium hypochlorite, ensuring safe and efficient handling. Our supply tanks for this chemical are used in water treatment plants and various industries.
What material is compatible with Sodium Hypochlorite storage?
Polyethylene (PE) is a versatile polymer, but not all PE grades are suitable for chemical storage. “Chemical grade” PE is high purity and meets strict standards.
At Polymaster, we ensure the right PE grade for storing sodium hypochlorite. Our unique PE blends are tested for compatibility with over 2,000 chemicals, ensuring a 25-year design life. All our PEs are UV stabilised for outdoor use.
Polymaster’s ‘Chemical Grade (7080/7088)’ PE is fully compatible with sodium hypochlorite, matching its specific gravity. For more details, visit our blog on storing sodium hypochlorite and download our Chemical Compatibility Chart.
CHEMICAL DOSING SOLUTIONS
Chemical Dosing Solutions
Pre-engineered Dosing Systems
Our pre-engineered dosing systems are designed for precise and efficient dosing of Sodium Hypochlorite. These systems are pre-engineered to offer a dosing range which is off-the-shelf and suitable across a wide range of industries. To configure a pre-engineered dosing system suitable for your application, this range offers:
Key Features:
- Pump Arrangements: Duty or Duty/Standby pump arrangements.
- Pump Options: 7.5 LPH @ 16 bar up to 200 LPH @ 4 bar – Grundfos DDA Dosing
- Pumps.
Pipework and Valves: +GF+ sch80 pipework and valves. - Cables and Junction Box: Control Cables and Junction Box.
- Mounting: These dosing systems are typically mounted inside the Double Door Cabinet and can be integrated to the side of a storage tank or standalone.
- Documentation: Detailed drawings, datasheets and step files available for these systems.
View Product
Custom Dosing Systems
Our custom dosing systems are tailored to meet the unique requirements of your specific applications. Polymaster builds custom dosing systems to match client-supplied P&ID’s and we follow the end-users’ specifications, such as a Water Utilities technical specification.
Key Features:
- Customised Systems: Systems built to your specifications.
- Precision Dosing: Advanced pumps and controls for accurate chemical delivery.
- Integration: Seamless integration with your current processes and systems.
- Safety and Compliance: Designed to meet all relevant standards and end-user specifications.
- Large Systems: We can build large systems for large-scale applications.
View Product
CHEMICAL SOLUTIONS
Tanks for Sodium Hypochloride Storage
Storage Solutions for Sodium Hypochlorite
Polymaster’s Self-Bunded range is the ultimate storage solution for sodium hypochlorite. This range incorporates the bund with the storage tank, providing a bund capacity of 110% of the internal storage tank. In the unlikely event of a leak, this design prevents chemicals from coming into contact with the environment and personnel. Polymaster’s chemical tanks are not rainwater tanks and follow strict QA processes, such as hydro testing each tank to ensure they are 100% leak-proof.
110L Chemical Dosing Skid
110L Chemical Dosing Skid
The 110ltr Dosing Skid is designed for small or remote treatment plants. This unit is setup inside the Polymaster the Double Door Cabinet, making it portable and versatile for different applications.
220L Chemical Dosing Skid
220L Chemical Dosing Skid
The 220L Dosing Skid offers extra capacity over the 110L unit while retaining the same compact, easy-to-manage footprint. It’s suited to applications with slightly higher dosing demand, without the space or handling requirements of a full-scale storage tank.
Enclosed IBC Bund
Enclosed IBC Bund
All Weather Polyethylene IBC Storage & Dispensing.
Polymaster’s unique Enclosed IBC Bund solves many of the problems associated with IBC storage and chemical/fluid decanting in a weather-resistant, purpose-built enclosure.
1,500L Bunded Chemical Tank
1,500L Bunded Chemical Tank
Polymaster’s smallest self-bunded tank, built for sites with tighter footprints or lower-volume chemical use. At 1170mm diameter it’s the most compact in the range, still delivering a fully engineered tank-within-a-tank design with 110% bund capacity, a 25-year design life, and compatibility across 1,965+ chemicals.
2,300L Bunded Chemical Tank
2,300L Bunded Chemical Tank
A step up from the 1,500L, the 2,300L self-bunded tank is the first size in the range offered with a double-door cabinet option, giving room to house dosing equipment alongside storage. Same 110% bund capacity and 25-year design life, sized for operations that need a bit more headroom without going bulk.
3,300L Bunded Chemical Tank
3,300L Bunded Chemical Tank
The 3,300L sits comfortably in the mid-range for self-bunded storage, still light enough to be despatched on a pallet and unloaded by forklift or crane with spreader bar. It combines the same tank-within-a-tank containment and 25-year design life as the rest of the range, in a footprint that suits growing operations.
5,000L Bunded Chemical Tank
5,000L Bunded Chemical Tank
At 2200mm diameter, the 5,000L strikes a balance between capacity and handling ease — still within the pallet/forklift-friendly size bracket, but with meaningfully more storage than the smaller tanks. Fully self-bunded to 110% capacity, it’s a common choice where moderate chemical volumes need dependable, low-fuss containment.
10,000L Bunded Chemical Tank
10,000L Bunded Chemical Tank
The 10,000L is the largest self-bunded tank still handled via pallet, forklift, or crane with spreader bar — the practical ceiling before larger units require lifting-plan-specified equipment. It offers substantially more storage while keeping site logistics simple, backed by the same 110% bund capacity and 25-year design life.
13,000L Bunded Chemical Tank
13,000L Bunded Chemical Tank
Moving into the range’s larger tanks, the 13,000L is the first size requiring a dedicated lifting plan for installation, and the first offered in a 1.75 SG rating alongside the standard 1.5 and 2 SG options — giving more flexibility for denser chemicals at higher-volume sites.
21,000L Bunded Chemical Tank
21,000L Bunded Chemical Tank
Built for high-volume chemical storage, the 21,000L offers the same 1.5, 1.75 and 2 SG options as the 13,000L in a significantly larger footprint (3570mm diameter). Installation follows the 13KL–30KL lifting plan, reflecting the scale of equipment needed to safely place a tank this size.
30,000L Bunded Chemical Tank
30,000L Bunded Chemical Tank
The largest tank in Polymaster’s self-bunded range, the 30,000L is built for sites with substantial bulk chemical storage needs. At 3880mm diameter, it carries the same engineering standards as every size below it — 110% bund capacity, 25-year design life — scaled up for maximum single-tank capacity.
HIGHEST QUALITY, CERTIFIED PRODUCTS
Our Tanks are manufactured to the highest Quality & Standards
Quality Assurance
Polymaster is certified for the international standard for quality management ISO9001
Food Grade
Food-grade polyethylene, certified to AS/NZS4020, the Australian standard for drinking water
Product Certification
Manufactured to AS/NZS 4766:2006 for guaranteed peace of mind.
Chemical Grade
Polymaster’s specially formulated PE material grades are certified to safely contain over 2,000 chemicals.
ACCESSORIES
Accessories for Sodium Hypochloride storage
Accessories give you the ability to decanter, store, mix and dispense with ease. We ensure you have a safe and effective solution for storing and dosing aggressive chemicals.
Dosing Skids
Polymaster provides dosing pipework and skids that assist in controlling the flow rate of Sodium Hypochlorite used in various treatment setups. These systems ensure precise and efficient chemical dosing.
View Product
Chemical Filling Stations
Polymaster’s chemical filling stations offer a safe and efficient solution for unloading Sodium Hypochlorite. Designed for ease of use, these panels ensure secure and controlled chemical transfer.
View Product
Cabinets
Chemical Dosing Systems – made easy at Polymaster for all applications, with flexible dosing options available ranging from a standalone cabinet to a complete package. These cabinets ensure safe and organised storage of Sodium Hypochlorite dosing equipment.
View Product
CASE STUDIES
Upgrading the Dungong Wastewater Treatment Plant
Find out how Polymaster was involved in the completion of a $28 million upgrade project to improve Dungong’s water quality.
- Industry: Waste Water Treatment
- Application: Clean In Place
- Product Used: Medium Self Bunded Chemical Tank
Applications
What are the applications for sodium hypochlorite?
Sodium Hypochlorite (NaOCl) is a versatile chemical with a wide range of applications across various industries. Here are some of its primary uses:
Clean In Place
In the water treatment industry Sodium hypochlorite is used to purify and disinfect water. It eliminates harmful microorganisms, such as bacteria, viruses, and parasites. When Sodium Hypochlorite is added to water it starts a process called chlorination.
FAQs
Frequently Asked Questions
Got a question about storing or dosing Sodium Hypochlorite? Here’s what our customers ask most — from best-practice storage to safe handling and what to avoid mixing it with.
What is the best way to store Sodium Hypochlorite?
Use containers made of compatible materials, such as our 7080 chemical grade to store sodium hypochlorite.
Store sodium hypochlorite separately from other chemicals, particularly acids, which can react with it and cause
dangerous reactions.
Ensure that sodium hypochlorite containers are tightly sealed and labelled with the proper hazard warnings.
Regularly inspect and check your tank for any signs of damage or wear that may occur and get them repaired
immediately.
What are the Chemical Storage and Handling Guidelines for Sodium Hypochlorite?
Use appropriate PPE: When handling sodium hypochlorite, always use personal protective equipment (PPE) such as gloves, goggles, and face shields to prevent skin and eye contact.
Avoid inhalation: Avoid inhaling fumes or vapours from sodium hypochlorite as they can cause respiratory irritation and other health issues.
Handle with care: Handle sodium hypochlorite carefully to avoid splashing or spilling. Ensure the work area is well-ventilated to disperse any fumes.
Proper mixing: Do not mix sodium hypochlorite with other chemicals unless you are certain of the reaction outcomes. Mixing with acids or ammonia can produce toxic gases.
Emergency procedures: Have emergency procedures in place in case of accidental exposure or spillage. This includes having eyewash stations and showers nearby and knowing how to neutralise spills safely.
What not to store with Sodium Hypochlorite
Acids: Storing sodium hypochlorite with acids can lead to the release of chlorine gas, which is highly toxic.
Ammonia: Mixing sodium hypochlorite with ammonia or ammonium compounds produces chloramines, which are toxic gases.
Metals: Avoid storing sodium hypochlorite with metals such as iron, copper, nickel, and chromium, as it can cause corrosion and produce harmful gases.
Organic materials: Organic materials such as solvents or fuels can react with sodium hypochlorite, leading to the risk of fire or explosion.
Reducing agents: Chemicals that are reducing agents can react violently with sodium hypochlorite, potentially causing dangerous reactions.
Chemical Storage & Handling
Temperature control: Store sodium hypochlorite at a stable, cool temperature to prevent decomposition and maintain its effectiveness.
Light exposure: Keep sodium hypochlorite away from direct sunlight and ultraviolet light, as exposure can degrade the chemical.
Spill containment: Use secondary containment systems to capture any spills or leaks and prevent environmental contamination.
Training: Ensure all personnel handling sodium hypochlorite are properly trained in its safe use and emergency response procedures.
RESOURCES
Chemical Tank Compatibility Chart
This Chemical Compatibility Chart provides a comparison of the chemical resistance of our Specialty Grades of Linear Low Density Polyethylene, High Density Polyethylene and Polypropylene Polymers in different chemical environments.
