Burnt Umbers offer the best value in brown pigments. These materials are in high demand in the stain industry because of their transparency. Burnt Umbers have a reddish undertone and exhibit good heat stability.
Raw Umbers are also an excellent value in brown pigments and popular in the stain industry due to their transparency. Though they are not heat stable, raw umbers can be used to produce many warm gray tones. They are also used extensively by colorant houses to darken a color without seriously affecting its chromaticity.
Blended Brown Iron Oxides
Blended Brown Iron Oxides are created in a full range of browns by combining both natural and synthetic iron oxides. The properties of any given brown are determined by the properties of its raw materials; they often utilize a certain performance characteristic of one of their components to enhance the quality of the overall blend.
Van Dyke Browns
Van Dyke Browns are used extensively in the stain industry. Imported Van Dyke Brown from Germany is available, along with a well-established substitute, 778BN Brown. The substitute has better dispersion characteristics and color consistency than the real Van Dyke. Hoover Color Corporation has recently introduced a water soluble extract derived from Van Dyke Brown: our 925 Brown. This new material should help stain manufacturers develop better water-based stains in order to deal with tighter environmental regulations.