In the PREN ISO 11936 standard, which was prepared as a European standard and redesigned by the International Standards Organization (ISO), a test method is described in order to determine the total extractable content of the following bisphenol compounds with a solvent:
This test method requires the use of triple quadrupole mass spectrometry (MSMS), diode Araay detector (DAD), or liquid chromatography (LC) with fluorescence detectors to identify and quantify bisphenols.
Meanwhile, the PREN ISO 11936 standard is in the draft stage, it has not been implemented yet.
Bisphenol-A (BPA) is a precursor to important plastics, particularly certain polycarbonates and epoxy resins. BPA-based plastic is clear and durable and is used in the manufacture of a variety of common consumer goods such as plastic bottles, food storage containers, baby bottles and sporting goods.
Bisphenol B (BPB) is very similar to BPA and replaces it in some products. It has the same endocrine disrupting properties as BPA. This compound is not used as a raw material in European Union countries and is in the process of being identified as a substance of high concern.
Bisphenol F (BPF) is potentially used in the manufacture of plastics and epoxy resins. However, it is mainly found in chemicals as a byproduct of the initial polymeric reaction. This compound is not used as a raw material in European Union countries.
Bisphenol S (BPS) is used for curing fast-drying epoxy adhesives and as a corrosion inhibitor. It is also widely used as a reactant in polymer reactions. Its main use in the leather industry is in the production of disulphonic condensates.
Bisphenols are used as raw materials according to their type. BPS monomer is used to form the polymer in the leather industry. Disulphonic condensates are predominantly referred to as sulfone-based syntan. Bisphenols are also formed as a side reaction in the production process where phenol is used as a raw material. BPF is formed as an undesirable by-product when phenol reacts with formaldehyde.
The test method described in the PREN ISO 11936 standard is designed by ISO to determine the total content of these bisphenols in leather material.
Our organization complies with the standard "PREN ISO 11936 Leather - Determination of the total content of certain bisphenols" within the scope of testing services for leather and leather products with its trained and expert staff and advanced technological equipment, among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors. It also provides testing services.
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