Leather - Chemical determination of formaldehyde content - Part 3: Determination of formaldehyde emissions from leather
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Our testing laboratory performs testing in accordance with DIN EN ISO 17226‑3 (Leather – Chemical determination of formaldehyde content – Part 3: Determination of formaldehyde emissions from leather) professionally and using an accredited testing procedure.
This standard specifies a standardized chemical analysis method for determining the formaldehyde emissions released from leather samples into the gas phase. The procedure also allows simultaneous monitoring of other low-molecular-weight aldehydes and ketones, providing a detailed chemical characterization of the volatile substances emitted.
In the test, the leather sample is heated over demineralized water in a sealed container at a constant temperature, as specified by the standard. Volatile formaldehyde diffuses into the gas phase and dissolves in the water. The water is then reacted with 2,4-dinitrophenylhydrazine, and the resulting hydrazones are separated chromatographically using HPLC, detected, and quantitatively analyzed.
The results of this test provide reliable quantitative information on the emission rates of formaldehyde and similar volatile organic compounds from leather surfaces. This data is critical for evaluating material quality, chemical safety, and usability — especially for products in close contact with skin or indoor environments where formaldehyde emissions may have health implications.