GB/T 11042.2-2005 is a standard for the colour fastness of Spinning & weaving products to sulfur monochloride vulcanization. The standard specifies the test method for the colour fastness of Spinning & weaving products under the action of sulfur monochloride, including the equipment required for the test, the specification for the use of sulfur monochloride reagents, detailed operation procedures, such as the time, temperature and environmental conditions of Spinning & weaving products in contact with sulfur monochloride. Scientific results evaluation standards are also developed. Testing according to this standard can accurately judge the stability of Color of Spinning & weaving products after sulfur monochloride vulcanization treatment, which provides a key basis for Spinning & weaving enterprises to optimize production process and ensure product mass.