Standard Operating Procedure for Determination of Phthalates
This is the method used to determine the amount of phthalates in plasticized components of children’s products. This is also the method we use to determine phthalate content in general consumer products, when Prop 65 evaluations are requested. TTL Laboratories maintains ISO 17025 accreditation for, and is also a CPSC-accepted laboratory to perform this test. The sample material is first reduced to small pieces or a powder, then it is extracted with solvent. The extraction may be performed with a pressurized microwave vessel, or with a Soxhlet extractor, which uses a heating element and specialized glassware to allow the phthalate compounds to move into the solvent solution. The solution is then reduced down to a known final volume and analyzed via a GC-MS (gas chromatography- mass spectrometry) instrument. The final results are then compared to the CPSIA limit of 0.1% for each phthalate compound, including DEHP, DBP, BBP, DINP, DIBP, DPENP, DnHP and DCHP.
For more information regarding Phthalate testing, click here for CPSIA Phthalates or click here for Proposition 65 Phthalates.