Accepta 2309 – Corrosion Inhibitor & Antifoulant for Closed Circuits Containing Aluminium

£155.40 ex. VAT

Order Quantity (25Kg Drums/Kegs)1-45-89-1617-3132+
Quantity Discount %0%17%25%30%33%

Product Description & Dosage Information Below

Prices are for 25Kg Drums/Kegs. POA for 200kg/IBCs.

Product can be used a replacement for Accepta 2541 & 2809

Don’t forget the Molybdate Test Kit for testing treatment levels.


Accepta 2309 is a high performance water treatment chemical scientifically formulated using a blend of organic and inorganic corrosion inhibitors and developed as a corrosion inhibitor and antifoulant for closed circuit water systems containing aluminium.

The superior performance of Accepta 2309 which includes molybdate, protects steel, copper and other non-ferrous metals. In addition Accepta 2309 is designed to protect systems which incorporate aluminium.*

Its extreme efficiency combined with low toxicity has proved Accepta 2309 to be an ideal treatment for closed chilled water and low pressure heating systems.

Product Benefits

  • High performance corrosion inhibitor and antifoulant
  • Suitable for both closed chilled water and low pressure heating systems
  • Effective protection for aluminium*
  • Effective protection over a range of metals
  • Innovative blend of organic and inorganic corrosion inhibitors including molybdate
  • Effective protection over a range of metals
  • Low eco-toxicity

Product Properties

Fprm: Liquid
Colour: Golden brown
Odour: Mild odour
pH: 7 – 9
Relative density: 1.0-1.1
Solubility in water: Soluble in water
Storage: Cool conditions above freezing

*Full details of the product properties are available in the Safety Data Sheet. See below.

Application & Dosage Information

For systems containing no aluminium Accepta 2309 should be dosed at 0.5 to 1% (5,000-10,000 ml/m3) in order to give a reserve of 50ppm of sodium molybdate.

For systems containing aluminium the dosage of 1-1.5% should be added in order to maintain a minimum reserve of 100ppm of sodium molybdate. In certain circumstances it may be necessary to adjust the pH separately by the addition of pH conditioner.

In systems requiring significant passivation higher initial dosages may be required to yield the required inhibitor residual.

*Important – Whilst Accepta 2309 is designed to protect systems which incorporate aluminium it should NOT be used in systems with Stelrad Super Plus Modular boilers where an alternative product COPAL should be used, and in all applications where aluminium is present it is important to control the pH in the range 7-8.

It is always advisable to carry out a ‘Control Of Substances Hazardous to Health’ (COSHH) assessment before use.

For further technical assistance concerning Accepta 2309 please contact Accepta.


Our recommended biocide for use with Accepta 2309 is Accepta 2827 which is a broad spectrum biocide to give excellent control within closed LTHW and Chiller systems.

Safety, Storage & Handling

For full details concerning safety precautions, storage and handling procedures for this product please refer to the latest Safety Data Sheet. To request the latest MSDS for this product please fill out the form below.

    Additional information

    Weight 25 kg
    Dimensions 30 × 23 × 47 cm