AATCC 23:2015 pdf download.Colorfastness to Burnt Gas Fumes
1.1 This test method is intended for as- sessing the resistance of the color of tex- tiles of all kinds and in all forms when exposed to atmospheric oxides of nitro- gen as derived from the combustion of natural gas. Exceptions are noted in 11.8.1.
1.2 This test method may be used for rating colorfastness of dyes by applying the dye to textiles by a specified proce- dure and at a specified depth of color and testing the dyed textiles.
2. Principle
2.1 A specimen of the textile and the test control fabric are exposed simulta- neously to oxides of nitrogen from burnt gas fumes until the control shows a change in color corresponding to that of the standard of fading. The change in color of the specimen is assessed with the standard gray scale for assessing change in color. If no color change is observed in the specimen after one exposure period or cycle, exposure may be continued, for ei- ther a specified number of periods or for the number of periods required to pro- duce a specified amount of color change in the specimen.
3. Terminology
3.1 burnt gas fumes, n.—atmospheric oxides of nitrogen as derived from the combustion of illuminating or heating gas. 3.2 colorfastness, n.—the resistance of a material to change in any of its color characteristics, to transfer of its colo- rant(s) to adjacent materials, or both, as a result of the exposure of the material to any environment that might be encoun- tered during the processing, testing, stor- age or use of the material.
4.3 Stoddard solvent is a combustible liquid and presents a moderate hazard. It should not be used near an open flame, and fabric saturated with this solvent should be dried in an adequately venti- lated laboratory hood. Use chemical gog- gles or face shield, impervious gloves and an impervious apron when handling Stoddard solvent.
4.4 Perchloroethylene is toxic by inha- lation, by repeated contact with skin and by ingestion; it MUST be used only in a well vented atmosphere. Toxicology studies with laboratory animals have shown evidence of cancer in rats and mice exposed to perchloroethylene va- pors at 100-400 ppm concentrations for prolonged times. Fabric saturated with this solvent should be dried in an ade- quately ventilated laboratory hood. Use chemical goggles or face shield, impervi- ous gloves and an impervious apron when handling perchloroethylene.AATCC 23 pdf download.