Appearance：tan to light green powder
Boiling Point：459ºC at 760 mmHg
Stability：Stable. Combustible. Incompatible with strong oxidizing agents.
CAS No. 6825-20-3 is a white solid powder that is used in the chemical industry as a catalyst and surfactant. It is also known as Sodium Tripolyphosphate, or STPP.
STPP is used in a variety of applications, from detergents and cleaning products to food additives and water softening agents. It is a cost-effective and versatile chemical that has been widely used for decades.
In terms of chemistry, STPP is a salt of phosphoric acid, with a molecular weight of 367.85. It is a polyphosphate, formed by the reaction of three molecules of phosphoric acid. It is soluble in water, with a solubility of 50 g/L at 20 °C.
STPP is widely used in detergents and cleaning products because it helps to soften water and increase its cleaning power, while also preventing the formation of scale on surfaces. It also helps to emulsify oils, enabling them to be easily removed from surfaces.
STPP is also used as a food additive, to improve the texture and mouthfeel of processed foods. In the food industry, it is used as a thickener and a preservative, as well as a stabilizer, to keep ingredients from separating.
Finally, STPP is also used in water softening, to reduce the hardness of water and make it easier for soap to lather. It is also used in the production of pharmaceuticals and cosmetics, as a buffering agent to maintain pH levels.
Overall, CAS No. 6825-20-3 is a versatile and cost-effective chemical that is widely used in the chemical industry. It is used in detergents and cleaning products, as a food additive, and in water softening, pharmaceuticals and cosmetics.
Cas number: 6825-20-3