Raw Umber JC428 is a natural pigment that has been processed to improve color predictability and micronized for ease of dispersion. Raw Umber is a naturally-occurring ore, which is milled, blended and then micronized into a fine powder at one of our facilities around the world. Visual and spectrophotometer tests are conducted on each lot to maximize consistency and quality. The resulting pigment produces deep, rich brown shades with complex undertones in wood stain applications. Umbers are preferred colorants in furniture stains and high-quality wood finishes because of their transparency and ability to enhance wood grain appearance. Raw Umber JC428 is also used in medium-gloss coatings, artist paints, coatings processed on intensive dispersing equipment, liquid colorants, paper and plaster applications. In addition, it meets ASTM C979-82 standards and therefore is suitable to color products made with cement. All Umbers are stable under exposure to sunlight and UV radiation and are alkali, chemical and weather resistant. Raw Umber JC428 is packaged in 50 pound multiwall paper bags. Uses: wood stain, paint, colorants, adhesives, ink, concrete, stucco and plaster.