This document specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of 1,3,5-tris[(3,3,3-trifluoropropyl)methyl]cyclotrisiloxane. This document applies to 1,3,5-tris[(3,3,3-trifluoropropyl) which is produced through organic synthesis and distillation using trifluoropropylene and methylhydrogendichlorosilane as the main raw materials. Methyl]cyclotrisiloxane (hereinafter referred to as D3F). Molecular formula: C12H21F9O3Si3