AATCC 172:2016 pdf download.Colorfastness to Powdered Non-Chlorine Bleach in Home Laundering
1. Purpose and Scope
1.1 This test method is designed to evaluate the colorfastness to powdered non-chlorine bleach in home laundering of textiles which are expected to withstand frequent laundering. The fabric color changes resulting from the powdered non-chlorine bleach, detergent solution and abrasive action of five home launderings are evaluated.
1.2 First establish the level of performance with powdered non-chlorine bleach and if an effect is found, then retest with detergent alone. It may be necessary to use a water only wash to separate the effects of components like hardness, pH or chlorine content.
1.3 Since the powdered non-chlorine bleaches currently available contain ingredients other than the powdered non- chlorine bleach; such as fluorescent whitening agents. bluing, etc., it is the total effect of these chemicals on the color change that is being evaluated.
2. Principle
2.1 Specimens are laundered under appropriate conditions of temperature. detergent solution, powdered non-chlorine bleach solution and abrasive action for five home laundering cycles. The laundered specimens are evaluated for color change.
3. Terminology
3.1 bleach, n.—in houw laundering, a product that will clean, whiten, brighten and aid in the removal of soils and stains from textile materials by oxidation that is inclusive of chlorine and non-chlorine products.
3.2 colorfastness, n.—the resistance of a material to change in any of its color characteristics, to transfer of its colorant(s) to adjacent materials or both, as a result of the exposure of the material to any environment that might be encountered during the processing. testing, storage or use of the materials.
3.3 laundering, n.—of textile materials, a process inended to remove soil and/or stains by treatment (washing) with an aqueous detergent solution and nor-mally including subsequent rinsing, ex-tracting and drying.
3.4 non-chlorine bleach, n.-a prod-uct that does not release the hypochloriteion in solution; i.e., sodium perborate, SO-dium percarbonate.
3.4.1 liquid non-chlorine bleach, n.-a product that contains hydrogen perox-ide as its active ingredient.
3.4.2 powdered non-chlorine bleach,n.- a product that contains either sodium perborate or sodium percarbonate as its active ingredient.AATCC 172 pdf download.