Nitrite Corrosion Inhibitor for Closed Circuits – 2533

This product has been replaced by Accepta 2336


Accepta 2533 is a very high performance, high strength nitrite based cooling water corrosion inhibitor scientifically formulated for the protection of closed circuits, low and medium pressure hot water systems and chilled water systems.

Accepta 2533 delivers superior results, and is based around a high strength nitrite formulation which includes phosphonate, polymer and azole to offer the ideal, economical choice of corrosion control for steel, cast iron, brass and copper.

IMPORTANT – Accepta 2533 is NOT suitable for systems containing aluminium.

Product Benefits

  • High performing liquid corrosion inhibitor
  • Suitable for closed circuit, low and medium pressure hot water systems
  • Suitable for chilled water systems
  • High strength nitrite based product
  • Excellent corrosion control for steel, cast iron, brass and copper
  • Economical

Product Properties

Fprm: Solution
Colour: Pale straw coloured
Odour: Slight
pH: >10
Specific gravity: 1.3
Solubility in water: Completely miscible
Decomposition temp: Decomposes at boiling point

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

Application & Dosage Information

Generally Accepta 2533 should be dosed to give 0.26% product in the system. This gives 1000 ppm sodium nitrite in the system.

The system should be clean when dosed.

Please note that this product will mobilise corrosion debris.

Dose an isothiazolinone based closed circuit corrosion inhibitor.

Do not mix Accepta 2533 with other chemicals unless advised by your Accepta consultant.

It is important to monitor the product concentration, pH and microbiological status regularly.

NOTE – This product is not suitable for systems containing aluminium.

Testing & Control

Measure nitrite using an Accepta nitrite drop test kit.

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

For further technical assistance concerning Accepta 2533 please contact Accepta.

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