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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 long crease mark (q.v.) in a dyed or finished textile and that runs approximately in the length direction. NOTE: The marks are caused during wet processing in the rope form and may be the result...
A selvedge that varies in width. NOTE: Variations in weft tension or lack of control of the warp ends within the selvedge may result in such unevenness. Pulled-in selvedges are caused by pulling in...
A stitch laid down before other design elements to help stabilize stretchy fabrics and tack down wales or naps on fabrics such as corduroy, so the design's details don't get lost. May also be used to...
Medium to heavy weight twill fabric with a soft, short nap covering the weave. It has a sueded, velvety hand. Originally made of wool or wool blends but may be of cotton or other fibers. Used in...
Soft, white, closely woven cotton fabric calendered to achieve a high glaze. Used mainly for pocket linings, underwear, aprons, shirts, and handkerchiefs. Originally made in Cambrai, France of...

Companies for Azo-free colorants:


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