Liquid Chlorine – Sodium Hypochlorite 12.5%

Liquid chlorine 12.5% (sodium hypochlorite) for industrial and commercial water treatment

Viva Blu liquid chlorine is sodium hypochlorite at 12.5% w/v available chlorine (125 g/L). It is supplied for plant and maintenance managers, facility operators and water treatment contractors who need a dependable disinfectant and oxidiser. Typical uses include process and cooling water, wastewater, food plant hygiene and site sanitation. Many hardware and pool chlorines are sold at 10%, so 12.5% gives 25% more available chlorine per litre, with less product to handle and store for the same dose.

Industrial and commercial uses

• Cooling water: microbiological control, including Legionella risk management, in open recirculating cooling systems as part of a site water management plan.
• Wastewater and effluent: disinfection of treated wastewater before discharge or reuse. Dechlorinate where your discharge conditions require it.
• Process water and tanks: disinfection of water storage tanks, lines and process water, where permitted by the relevant authority.
• Food and beverage plants: hard surface and equipment sanitation in processing areas, dairies and cool rooms, followed by appropriate rinse and food-contact procedures.
• Odour control: oxidation of hydrogen sulphide in sewage and industrial waste streams.
• Cleaning contractors: pressure cleaning of concrete, render, roofs and cladding to remove mould, mildew, lichen and algae.

Indicative dosing for industrial applications

At 12.5% (125 g/L), 8 mL per 1,000 L adds about 1 mg/L free chlorine before any chlorine demand. Actual dosing must be confirmed by on-site testing and adjusted for pH, temperature, organic load and water quality.

Full dosing, dilution and compatibility tables are in the Technical Reference section below. For guidance on dosing systems and site storage, read our sodium hypochlorite 12.5% industrial dosing guide.

Pack sizes

• 5 L container
• 20 L container

Trade and business supply

• Business buyers: register for a Viva Blu B2B account.
• Regular or larger volumes: for regular or larger volumes of sodium hypochlorite, call 0402 981 808 or email contact@vivablu.com.au.
• Documentation: the Safety Data Sheet (SDS) is available to download on this page.
• Local stock: dispatched from our Brisbane warehouse in Windsor, QLD, with free pickup available.

Product specifications

Safety, handling and storage

Sodium hypochlorite is corrosive and a strong oxidiser. Read the SDS before use and include it in your hazardous chemicals register.

• PPE: chemical-resistant gloves (nitrile or neoprene), goggles or a face shield, and protective clothing. Ensure good ventilation.
• Never mix with acids (hydrochloric, sulphuric, citric or pH reducers): this releases toxic chlorine gas. Keep away from ammonia compounds, hydrogen peroxide and calcium hypochlorite.
• Use HDPE, polypropylene or PVDF equipment and Viton seals. Hypochlorite attacks most metals, including mild and galvanised steel, copper and aluminium.
• Store sealed, upright, in a cool, shaded, ventilated area on a chemical bund that is not shared with acids. Heat and sunlight speed up loss of strength, so use stock in rotation.
• Poisons Information Centre: 13 11 26.

Also used in pools

The same 12.5% liquid chlorine is widely used in commercial and residential pools. About 80 mL raises free chlorine by 1 ppm per 10,000 litres. See how much chlorine to shock a pool and our liquid chlorine safety tips.

Delivery and pickup

Liquid chlorine is a dangerous good and ships with dangerous goods freight, within Australia only. The exact freight cost is calculated at checkout. Orders are handled within up to 2 business days. Delivery usually takes 1 to 3 business days in Queensland and up to 7 business days elsewhere in Australia after dispatch, and dangerous goods can take slightly longer. Free pickup is available from our Windsor, QLD warehouse. See our shipping policy.

Frequently asked questions

What strength is Viva Blu liquid chlorine?

It is sodium hypochlorite at 12.5% w/v available chlorine, which is 125 g/L. Many hardware and pool chlorines are 10%, so 12.5% gives 25% more available chlorine per litre.

Can liquid chlorine be used for cooling tower treatment?

Yes. Sodium hypochlorite is commonly used for microbiological control in open recirculating cooling systems, typically maintaining about 0.5 to 2.0 mg/L free chlorine, as part of a site water management plan. Confirm dosing with on-site testing.

How much sodium hypochlorite do I need to disinfect a tank?

To reach 50 mg/L you need about 400 mL of 12.5% sodium hypochlorite per 1,000 L of water, typically with 30 minutes contact time, then flush before returning the tank to service.

Do you supply businesses on account or in larger volumes?

Businesses can register for a Viva Blu B2B account online. For regular supply or larger volumes, call 0402 981 808 or email contact@vivablu.com.au.

Is an SDS available?

Yes. The Safety Data Sheet for sodium hypochlorite 12.5% can be downloaded from this product page.

How long does sodium hypochlorite keep?

It slowly loses strength over time, faster in heat and sunlight. Store it sealed in a cool, dark place and use stock in rotation.