Smaltin

Smaltin is a synthetic blue pigment derived from cobalt. It is essentially a glass colored blue by the presence of cobalt oxides. The name smaltin comes from smalt, an older term for a similar cobalt-colored glass. The pigment is created by fusing sand, soda, and cobalt ore at high temperatures. The resulting molten glass is then cooled and ground into a fine powder. This powder is insoluble in water and most organic solvents, making it suitable for use in paints, ceramics, and enamels. Smaltin is known for its vibrant, deep blue color and its excellent lightfastness, meaning it resists fading when exposed to sunlight. Historically, smalt was used in illuminated manuscripts and for decorative purposes. Modern smaltin continues this tradition, offering a durable and aesthetically pleasing blue colorant. Its chemical composition primarily includes silica and cobalt oxide. The specific shade of blue can vary depending on the concentration of cobalt and the presence of other metallic impurities. Due to its stability and color intensity, smaltin remains a valued pigment in various artistic and industrial applications.