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What is "Azo-free colorants" - Definition & Explanation

Azo-free colorants are dyes and pigments that are free of the nitrogen-based compounds aromatic amines, also referred to as "Azos". These compounds are toxic and banned in the EU due to their mutagenic, carcinogenic and often allergic properties. These dyes are not biodegradable.

Some other terms

Some more terms:

A textile product of substantial length and relatively small cross-section and that consists of fibres (q.v.) or filament(s) (q.v.) (or both) with or without twist. NOTE: a) Assemblies of fibres or...
A tough medium to heavyweight coarsely woven plain weave fabric, usually made of a cotton or cotton/poly blend. Lower grades of the unfinished fabric are used for such industrial purposes as bags,...
A glove is a type of garment which covers the hand. Gloves have separate sheaths or openings for each finger and the thumb; if there is an opening but no covering sheath for each finger they are...
In wet spinning, the polymer used to form the fibre is dissolved in solution. The solution is forced under pressure through an opening into a liquid bath in which the polymer is insoluble. As the...
The shorter fibres separated from the longer fibres by combing during the preparatory process before spinning. Noils are a mixture of short and broken fibres, neps and vegetable matter. Noils may be...

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