MERGAL KM90 is a formaldehyde-free, broad-spectrum in-can preservative for aqueous systems, specifically developed to prevent deterioration and degradation caused by bacteria, fungi, and yeast. It is particularly suitable for alkaline environments and metalworking fluids, and is highly effective in applications such as native glues (skin and bone), dextrin- or casein-based adhesives, and textile and leather finishes. MERGAL KM90 offers stability across a wide pH range (3–13) and at temperatures up to 100 °C, providing long-lasting protection without containing AOX, formaldehyde, or CMIT/MIT.