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What is "Heavy metal free dyes" - Definition & Explanation

Heavy metal free refers to dyes that do not require the use of heavy metals to achieve the fixation of colors. Toxic heavy metals, such as chrome, copper and zinc, which are all known carcinogens, are commonly used as fixers in dyes. And, although most heavy metals can be removed from the effluent through wastewater treatment, this often does not occur.

Some other terms

Some more terms:

Refers to any type of wind-resistant jacket worn when skiing. The conventional type zips in front and may be made of nylon, wool, fur or quilted fabric. Frequently it has an attached hood. Usually...
The permeablity, or the ease with which air passes through material. Air porous ness determines such factors as the wind resistance of sailcloth, the air resistance of parachute cloth, and the...
A plain-weave, stiff fabric with thick-and-thin yarns in both the warp and the filling. The fabric was originally made of linen but is now duplicated in 100% polyester or a variety of blends such as...
Fiber or fibre (see spelling differences) is a class of materials that are continuous filaments or are in discrete elongated pieces, similar to pieces of thread. Fibers are often used in the...
A finish that has the purpose of increasing the absorbency of a fabric. on durable press blends. The finish allows the stain to leave the fabric faster, increases the wicking action for improved...

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