In the ISO/FDIS 11936 - IULTCS/IUC 42 standard, which is being developed jointly by the Association of Leather Technologists and Chemists Societies (IULTCS) and the International Standards Organization (ISO), a test method for determining the total content of certain bisphenols in leather material is described.
Bisphenol F and S are impurities found in syntans used in leather production. Bisphenol S can be found as unreacted reagent on sulfone-based syntans. Syntans are water-soluble tanning polymers used as re-tanning agents to complete the tanning of various chrome-free leathers or to improve the softness, fullness, consistency, polishing of leathers. Commercial leathers today cannot be successfully made without syntans.
Bisphenol F (BPF) is used to make hard plastic parts for household appliances, vehicles and similar materials. It is also used in protective coatings such as linings and dental sealants in some beverage cans. This compound is classified as a harmful substance by the American Environmental Protection Agency (EPA). Studies have identified potential toxicological effects following skin contact.
Bisphenol S (BPS), on the other hand, is part of the polyethersulfone plastic used to make rigid plastic products and synthetic fibers for clothing and other textiles. Bisphenol S is also used in some leathers to make the colors last longer. It is also found in protective coatings inside some food boxes. Consumer products marketed as BPA-free may actually contain BPS.
Polymers produced from disulphonic and phenolic monomers are used in leather production and therefore these compounds may contain bisphenol. In the leather industry, these compounds are generally used in pre-tanning, retanning, lubrication and dyeing.
Bisphenol A (BPA) is a chemical compound used to make polycarbonate plastic. Polycarbonate plastic is used in the manufacture of baby bottles, reusable water bottles, food containers, jugs as well as leather.
The test method described in the ISO/FDIS 11936 standard is designed by IULTCS to determine the total content of these bisphenols in leather material.
Our organization, among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors, with its trained and expert staff and advanced technological equipment, within the scope of testing services for leather and leather products, "ISO / FDIS 11936 - IULTCS / IUC 42 Leather - Certain bisphenols It also provides testing services in accordance with the "determination of the total content" standard.
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