What is Azo?

Azo actually refers to chemical compounds that bear the function group R-N=N-R', in which N is Nitrogen; R and R' can be either aryl or alkyl. The N=N group is an Azo group.

Under reductive conditions, azo groups can form aromatic amines.

Why is Azo toxic?

Azo dyes are usually used as vivid colouring agents, especially reds, oranges and yellows. Due to the potential release of aromatic amines, such dyes and pigments are mutagenic, carcinogenic and sometimes allergic.

Azo dyes are also not biodegradable and are difficult to remove from our ecosystem.

EU Ban on Azo dyes

Since September 2003, all EU countries have prohibited the manufacture and sale of consumer goods containing certain form of azo dyes - those that release specific aromatic amine groups.

What kind of products may contain azo dyes?

All kind of textile and leather goods including clothing, towels, wigs, shoes, hats, nappies, gloves, handbags, bedding, etc.

The EU Directive actually include all dyed consumer goods that often come into contact with the skin, including garment and toys.

What if I am a manufacturer/trader?

If you want to manufacture or export textile goods to EU countries, you need to obtain an inspection report from recognized test laboritoies to cerify your goods are Azo-free.

What if I am a consumer?

You may get more information from local Consumer Councils.