Ecodis, an eco-friendly hardware store, offers Meudon White, which goes by many names: Spanish White, or sometimes Champagne White, Troyes White, Toulouse White, or more rarely, simply "white stone." It is composed of calcium carbonate (CaCO3) particles, the main component of limestone and chalk. It is slightly alkaline, very mildly abrasive, and traditionally used in paint manufacturing, household cleaning, and arts and crafts. It is also used for polishing silverware, earthenware, ceramic hobs, and plastics. It is suitable for gilding and polishing mirrors, as well as for whitening shoe fabrics. Meudon White is an ingredient in putty, some carbonated waters, and serves as incandescent powder for fireworks. It was once used in leather tanning when this process was still done by hand. In addition to its environmental benefits, Blanc de Meudon is safe to handle (unlike petrochemical products) and inexpensive. Blanc de Meudon can be used pure, treated, and/or mixed with various materials. Ecological benefits: A virtually inexhaustible mineral resource sourced from natural quarries. Wide range of uses. Non-toxic to humans and the environment. Produced and packaged in Western Europe. Recycled cardboard packaging. Technical characteristics: - slightly abrasive - non-flammable - slightly alkaline. INGREDIENTS: Blanc de Meudon 99% minimum (primarily calcium carbonate).