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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:

Single textile material with addition of an extra warp of filling added for weight and warmth. The extra warp or filling ma is of wool, worsted, cotton, or other yarns. This type of construction is...
A sustainable fabric that is derived from a blend of Japanese paper and kumazasa herb. Saswashi is a beautiful fabric that has a soft touch similar to cashmere or Egyptian cotton, but is has a dry...
A plain weave fabric with even or close to even thread counts in warp and weft. Often of cotton. Carded yarn versions are used for inexpensive apparel, furniture covers and as a base for laminates....
A plain-woven cotton fabric; characterized by fine rib lines in the warp direction created by alternate coarse and fine ends, or by having two (or more) ends weaving as one alternately with a single...
Frieze is a coarse woollen cloth with a nap on one side, that was raised by scrubbing it to raise curls of fibre (French: frisť). In the 19th century rough cheap frieze was made of wool mixed with...

Companies for Azo-free colorants:


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