Sodium Hypochlorite 12.5% Solution

Sodium Hypochlorite 12.5% Solution (CAS 7681-52-9, molecular formula NaOCl) is a treatment chemical specified by municipal and industrial plant operators where dose consistency and impurity control directly affect finished water quality. China Chemicals supplies it at 12.5% available chlorine in pack sizes from 1 L through to 200 L Drum, so laboratory trial quantities and full production volumes can be sourced from the same specification.

It is also traded as Bleach, Liquid Chlorine, Hypo. Every consignment ships with a batch-specific Certificate of Analysis and the current Safety Data Sheet, and material is stored and picked under stock rotation so you receive product well inside its shelf life.

Typical applications

Disinfection of potable water and reservoirs
Swimming pool and cooling tower sanitation
CIP sanitising in food and beverage plants
Textile and pulp bleaching
Odour control in wastewater systems

Technical specification

Chemical name	Sodium Hypochlorite 12.5% Solution
Synonyms	Bleach, Liquid Chlorine, Hypo
CAS number	7681-52-9
Molecular formula	NaOCl
Appearance	Pale yellow-green liquid
Available chlorine	12.5% w/v min
Free alkali as NaOH	0.5 – 1.5%
Sodium chloride	12% max
Iron (Fe)	5 ppm max
Density at 20°C	1.20 – 1.22 g/cm³
Appearance	Clear, pale yellow

Values above are typical and are confirmed on the Certificate of Analysis issued against each batch. Tighter specifications can be quoted where a process requires them.

Packaging and supply

Available in 1 L, 5 L, 25 L, 200 L Drum. Bulk, road tanker and export drum quantities are quoted on request, including FOB and CIF terms for international shipment. Pricing shown is per pack in USD, exclusive of freight and any applicable duties.

Handling and safety

Transport classification: UN1791 · Corrosive, Class 8. Store in the original closed container in a cool, well-ventilated area away from incompatible materials, and handle using appropriate personal protective equipment. Read the Safety Data Sheet in full before use — it is issued with every order and is available on request before purchase.

Supply to industry only. Products are sold for legitimate industrial, laboratory and manufacturing use. We may request end-use details and business registration before releasing an order.