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Low impact dye

Ever had a red sock turn all your white shirts pink in the wash? That's one of the troubles of conventional dyes-they tend to bleed. Fiber-reactive dyes, however, bond chemically to fibers for exceptional color-fastness. Of course, for the environmentally conscious, the real problem with conventional dyes has nothing to do with socks, but rather water contamination. Large quantities of dyes, most of which are petroleum-based, are used in commercial textile facilities, and a great deal of those dyes run off and end up in the water supply. Fiber-reactive dyes are sometimes referred to as low impact dyes because the dying process uses less water and therefore generates much less wastewater runoff and contamination. Most of these dyes are still made with petroleum-based chemicals, however, so are not entirely virtuous. Also called fiber-reactive dye.

 

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   Formaldehyde

The smell of this highly toxic volatile organic compound (VOC) could virtually transport you right back to your seventh-grade science classroom on dissection day. Formaldehyde was the liquid the poor frog was preserved in. It's also a common ingredient in adhesives and numerous household materials, including plastics, foam insulation, wood products, and carpet backing ("new carpet smell" carries a hint of that science lab odor, if you think about it). Exposure to formaldehyde, via offgassing, is linked to a range of health problems, from respiratory irritation to cancer. Unfortunately, formaldehyde is hard to avoid, but low- and no-formaldehyde products-from paints to rugs to wood-are increasingly available and are often labeled as such. See also phenol formaldehyde, and urea formaldehyde.
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