AOS Paste, also known as Alpha Olefin Sulfonate (AOS) Powder, is a chemical compound with the CAS number 68439-57-6. Its molecular formula is R-CH=CH-(CH2)n-SO3Na, where R represents a C14-16 alkyl group. AOS is an anionic surfactant that is commonly used in various applications, including as a detergent, emulsifier, and wetting agent. It is known for its excellent foaming properties, mildness to the skin, and compatibility with other surfactants. AOS paste is typically available in a powder form and has a white to off-white appearance. It is soluble in water and has a pH range of 11-13 in a 10% aqueous solution.