This standard specifies a method for determining the color fastness of textiles to aluminum chloride carbonization at high temperatures, primarily used to evaluate the color stability of wool-containing textiles during the carbonization process for removing vegetable impurities. The method involves immersing the specimen in a specific concentration of aluminum chloride solution, followed by controlled drying and baking at specified temperatures, and subsequent rinsing steps. To conduct this test, laboratories must use an oven capable of precise control to complete the prescribed drying and baking procedures. After testing, the degree of color change in the sample is assessed either manually or digitally using a gray scale to determine its color fastness to carbonization grade.