Sodium Alpha-olefin Sulfonate CAS 68439-57-6

FAQ - Technical & Supply Chain

• Q:

  What is Sodium Alpha-olefin Sulfonate CAS 68439-57-6?

  A: Sodium Alpha-olefin Sulfonate CAS 68439-57-6, also called AOS or sodium C14-16 olefin sulfonate, is an anionic surfactant made by sulfonation and neutralization of alpha-olefins. The 68439-57-6 grade normally refers to a C14-16 mixture supplied as 92% powder or about 35% liquid, valued for rich foam, fast cleaning, and good rinsability.
• Q:

  What is the difference between AOS 92% powder and AOS 35% liquid?

  A: AOS 92% powder is a white to light yellow powder with active matter of at least 92%, making it efficient to ship and convenient for dry-mix detergent formulations. AOS 35% liquid is a pale clear liquid with about 34.0-36.0% active matter, suited to liquid cleaners and systems that need easier handling and dilution.
• Q:

  How does AOS compare with LAS in hard-water cleaning systems?

  A: AOS typically retains foaming and cleaning performance better than many LAS products in hard water, because it is more tolerant of calcium and magnesium ions. It is therefore preferred in vehicle cleaning, pressure washing, and industrial degreasing where hard water, high-foam requirements, or wide pH conditions are present.
• Q:

  What are the main industrial applications of Sodium Alpha-olefin Sulfonate?

  A: This surfactant is used as a primary anionic surfactant in household detergents, laundry products, industrial cleaners, vehicle-wash systems, pressure washing, and hard-surface degreasing. It also appears in some handwash and personal-care formulations where stable foam and good rinsing are required.
• Q:

  What specifications are commonly checked for AOS powder?

  A: For AOS 92% powder, buyers commonly check appearance, active matter at least 92.0%, sodium sulfate content, unsulfonated matter, free alkali, pH, and water solubility. Batch limits vary by plant, so the supplier COA remains the controlling specification for each shipment.