Of all the detergents readily available on the market, it turned out that bleach compounded (oxygen type), heavy detergents are used by 75% of people. The reason lies in the difference in soil removal.

Even with a risk of color running or fading, priority is given to whether dirt comes off fabric.

Moving with times, laundering in boiling water is gradually being replaced by quicker laundering at lower temperatures. For oxygenic bleach to function at lower temperatures, auxiliaries are also added.

The report was on color running caused by laundering with such detergents over a number of times, however, it only refers to the decomposition of the dyestuff itself. Most troubles concerning fabric dyed with reactive dyes are not created by the decomposition of the dyestuff itself but the hydrolysis of chemically bound fiber and dyestuff. Oxydation bleaching speeds up this hydrolysis. Furthermore, this is the primary source of color bleeding, staining and running. Color fading is a result of the decomposition of dyestuff and/or hydrolysis, and it is clear that it is related to oxydation bleaching. The appeal of this fact should be spread across the world.

(T.T.)