Whiting Powder
Description
Whiting powder, also known as calcium carbonate powder, is a fine, white powder derived from natural sources like limestone and chalk. It’s a versatile substance widely used as a filler, extender, and pigment in various industries, including construction, manufacturing, and art. Its fine texture, ability to improve viscosity, and non-toxic nature make it a popular choice for many applications.
Typical Properties
Insoluble in water: Does not dissolve in water.
Soluble in acids: Dissolves in acids.
Slightly abrasive: Has a mild abrasive quality, particularly useful for polishing.
Non-toxic: Generally considered safe for various applications, including food and art.
Chemical Composition of Calcite
Contains: Natural, ground calcium carbonate (CaCO3: CAS-No. 1317-65-3) mixed with 0.4 – 2.8% auxiliary agents. Silica, quartz (naturally-occuring component of calcium carbonate) typical 0.05 – 0.5%
Applications
Whiting powder, primarily composed of calcium carbonate, has diverse applications across various industries. It’s commonly used as a filler and pigment in paints, coatings, and whitewashes, enhancing coverage and durability. It also finds use in plastics, rubber, and ceramics, where it acts as a filler to improve strength and smoothness. Additionally, whiting powder is employed for cleaning and polishing, particularly for metals and glass.