This standard specifies the product structure and model, requirements, test methods, inspection rules, marking, packaging, transportation and storage of dimethyl silicone oil. This standard is applicable to catalytic polymerization using octamethylcyclotetrasiloxane, dimethylsiloxane mixed ring or dimethyldichlorosilane hydrolyzate as raw materials, mixed with hexamethyldisiloxane. Prepared dimethyl silicone oil. This standard only applies to industry standards. This standard does not apply to dimethyl silicone oil prepared from dimethyl silicone mixed rings recovered from other by-products or waste cracking.