Testing acc. to VDA 675-125 / 675125: Elastomer components in motor vehicles - Test methods for identification - Extractable components - Extraction with cyclohexane / acetone
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Testing methods
Our laboratory performs tests according to VDA 675-125 to a high technical standard. The procedure is used for the identification of elastomer materials and determines the fraction that can be removed using a defined mixture of cyclohexane and acetone. It can be applied to different elastomer types taken from components and test sheets.
For the test, the prepared specimen is treated in a Soxhlet apparatus with a 1:1 mixture of cyclohexane and acetone. After extraction, the remaining material is dried under specified conditions and the removed fraction is determined quantitatively by differential weighing. The procedure can also be used to separate soluble constituents from the vulcanizate as preparation for subsequent infrared analysis.
Note on the status of VDA 675-125
The VDA 675-125:05/2016 edition has formally been withdrawn by the VDA. FILK can nevertheless perform the test according to this edition on customer request. For current testing of soluble constituents in plastics, DIN EN ISO 6427 – matter extractable by organic solvents is also available.
Determination of the soluble fraction can provide information on material composition and is particularly useful for identification, comparative investigations and assessment of different production batches. Related analytical services are presented under extractable components and chemical analysis.
Further information is available in our overview of VDA tests and specifications and in the test laboratory overview with a search function for standards, specifications and testing services. For specific material problems, we also provide support through failure analysis and material assessment.
