CAS: 868-14-4
Commonly referred to as cream of tartar, potassium bitartrate is an acidic, crystalline compound that is a naturally formed fermentation product of tartaric acid observed in wine barrels. Known for its culinary applications such as stabilizing whipped egg whites, cream of tartar functions as an agent in different manufactured commodities. Potassium bitartrate is distinguished from other similar compounds by the specific crystalline structure and acid nature, allowing it to fulfill various unique roles in several industrial applications. Its use has been documented for centuries, from its recognition in winemaking, through its integration in the preparation of baked goods and other processes in various trade sectors.
Interestingly, it was formerly known as "beeswing" because of its shiny, crystalliferous aspect- veering its collection with a diminutive hassle during the wine-making process. Initial applications set the ground for this chemical today to embrace diversified roles across various sectors.
Chemical Properties of Potassium Bitartrate (Cream of Tartar)
● CAS: 868-14-4
● Molecular Formula: KC4H5O6
● Specific Gravity (@ 18°C/64.4 °F): 1.984
● Solubility in Water (@ 20°C/68 °F): 5.7 G/L
● Lead (ppm): ≤ 0.005
Physical Properties
● Appearance: Fine, white crystalline powder
● Odor: Odorless
● Texture: Similar to powdered sugar in texture
● Purity: Typically appears as a clean, bright white powder with no visible contaminants.
● Shine: Exhibits a shiny, glass-like quality due to its crystalline structure.
● Touch Behavior: Dry and slightly loose to the touch, with a slightly tacky feel when moistened.
Construction Uses
In construction, potassium bitartrate is mainly employed in drymortars and render stucco to improve the workability and durability of materials. When added to mortar, it makes the mix easier to apply and gives the workers a longer working time before it sets, thereby allowing them more time to use the mix before it finalizes. Cream of tartar also improves the adhesive properties between the mortar and the substrate. In stucco, it ensures better uniformity of texture, thus decreasing the likelihood of cracking and building resistance to the elements.
Other Industries
● Food and Beverage: Apart from baking, cream of tartar is used in winemaking to stabilize tartaric acid content, helping in the prevention of crystallization in wine and juices. Because of its stabilizing characteristics, it is also being employed in sugar-free or low-sugar products.
● Pharmaceuticals: Besides an excipient for potassium bitartrate, it also finds its applications in various oral electrolyte solutions or effervescent formulations that can act as a buffer, which stabilizes acidity.
● Cosmetics: Potassium bitartrate can serve as pH stabilizers or texture enhancers in various cosmetic products like shampoo, conditioner, and soap. It is mostly used in formulations where a smooth consistency and continuous stability are significant.
● Cleaning Products: Cream of tartar is also found in some natural cleaning products as a mild abrasive or pH regulator, helping to remove stains or make cleaning more efficient, for example, in combination with baking soda.