Tris(13-dichloro-2-propyl)phosphate Tags: Chemical Compound, Chemical Substance.Tris(13-dichloro-2-propyl)phosphate is an organophosphate with the chemical formula OP(OCH(CH2Cl)2)3. Also known as Tris this phosphate ester is used as a flame retardant. The safety of this compound has been questioned. thumbnail IUPAC name Tris(13-dichloropropan-2-yl) phosphate Learn more... Loading...