Dissolvine is the Akzo Nobel brand name for chelates, chemicals that control the concentration or effects of metal ions. As the word 'chela' implies (it's Greek for crab's claw), chelates seize a metal ion and control it, making it very difficult for another substance to liberate it. Dissolvine products include chelating agents that absorb and control metal ions, as well as metal chelates that can introduce the right kind of metal ions into a product or process in precisely the right dose.

Our products have helped numerous companies improve their industrial processes. Dissolvine chelates and chelating agents are used in a very wide range of chemical processes, including household cleaning, water treatment, and preventing precipitation and scale, as well as in many other applications in the paper industry, photography and agriculture.

We supply the following products: EDTA, NTA, DTPA, HEDTA, PDTA, EDDHA and Glucoheptonate.

EDTA is generally the preferred choice, but specific applications may require other chelating agents.

Common specific properties of these molecules are:

EDTA is a standard chelating agent.

NTA is a biodegradable chelating agent that is weaker than EDTA, but used widely in cleaning processes and deterent applications. It is not very sensitive to thermolysis at very high temperatures (> 150 degrees C), which can be very useful for some oil-industry applications.

DTPA is a chelating agent that is stronger than EDTA that is often used to lower the effective free metal content of processes such as the bleaching of pulp. It is also more stable under oxidizing conditions.

HEDTA is a chelating agent with similar efficacy to EDTA. However, it is particularily useful in controlling iron. It can also be used to complex magnesium at low pH (below 6).

PDTA is a specific chelator especially developed for the photo-finishing process. When it complexes with iron, it is very effective in the bleaching of photograpic films and paper.

EDDHA is a high-performance chelating agent used especially with iron in alkaline conditions.

Glucoheptonate is a biodegradable chelate that is generally weaker than EDTA but is useful as an alternative chelating agent for very high pH solutions where aminopolycarboxylates are less effective.