A test method for analyzing chlorobenzene and chlorotoluenes (commonly known as COC,s) in textiles and textile products has been developed and the same has been validated as per international validation protocol. 28 restricted COC,s in textiles as per Oekotex were standardized by using GC MS. As a part of method validation, Detector linearity, Accuracy, Repeatability, Spike recovery, LOD, LOQ, etc. is established. A sample preparation method using a solvent extraction method is also developed based on extraction efficiency of few solvents