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

It is an anionic surfactant commonly known as AOS or alpha olefin sulfonate. The CAS number covers sulfonic acids, C14-16 alkane hydroxy and C14-16 alkene sodium salts, so the commercial product is a mixture rather than a single molecule.

What is in a typical AOS product?

AOS is mainly composed of alkene sulfonates and hydroxyalkane sulfonates, often with smaller amounts of related sulfonated species. Liquid grades usually contain about 35-40% active matter, while spray-dried powder grades may contain 90% or more active matter.

Why is AOS used in detergents and cleaning products?

It provides high foaming, strong detergency, and good wetting in liquid and powder laundry detergents, dishwashing products, household cleaners, and institutional cleaning systems. It is also readily soluble in water and readily biodegradable under typical conditions.

How does AOS perform in hard water compared with some other anionic surfactants?

AOS generally retains good cleaning and foaming performance in hard water because its sulfonate structure is less sensitive to calcium and magnesium ions than many soap-based or carboxylate surfactants. It can therefore be useful in formulations intended for areas with harder water.

Sodium Alpha-Olefin Sulfonate (AOS) CAS 68439-57-6

Sodium Alpha-Olefin Sulfonate, also called AOS or alpha olefin sulfonate sodium salt, CAS 68439-57-6, is an anionic surfactant supplied as an aqueous solution or spray-dried powder and positioned for detergent and cleaning formulations. Confirm the required grade, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 68439-57-6
Synonyms: AOS; Alpha Olefin Sulfonate Sodium Salt
Grade: Detergent / cleaning formulation grade
Package: Drums, IBC (liquid), or bags (powder)

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Product Description

Sodium Alpha-Olefin Sulfonate (AOS) CAS 68439-57-6 is an anionic surfactant derived from alpha-olefins through sulfonation.

Synonyms: AOS; Alpha Olefin Sulfonate Sodium Salt.

CAS: 68439-57-6.

It is supplied as a light yellow liquid or white to off-white powder.

The CAS number covers a mixture of sulfonic acids and alkane/alkene sodium salts, not a single molecule.

It is positioned as an anionic surfactant for detergent and cleaning formulations.

It provides strong detergency, good foaming performance, and effective wetting properties.

It is used in liquid and powder laundry detergents and dishwashing products.

It is used in personal care cleansers and industrial or institutional cleaning systems.

Its sulfonate structure is less sensitive to calcium and magnesium ions, retaining good performance in hard water.

Liquid grades usually contain about 35-40% active matter, while spray-dried powder grades may contain 90% or more.

Confirm the required grade, active matter, appearance, and related specifications for the chosen grade.

Check compatibility with the target detergent or cleaning formulation and confirm the required supply form.

Store liquid grades in sealed drums or IBCs and prevent freezing; keep powder grades dry to avoid caking.

Store in a cool, dry, well-ventilated area, away from prolonged high heat and direct sunlight, and close containers when not in use.

Confirm packaging suitable for the liquid or powder form and order quantity, and follow the current SDS.

Confirm grade, packaging, and specification as required.

The page is an RFQ entry point and does not state stock, price, MOQ, or fixed lead time.

For an RFQ, state the intended application, required grade, quantity, packaging, destination, and document needs.

FAQ - Technical & Supply Chain

Q:
What is Sodium Alpha-Olefin Sulfonate CAS 68439-57-6?

A: It is an anionic surfactant commonly known as AOS or alpha olefin sulfonate. The CAS number covers sulfonic acids, C14-16 alkane hydroxy and C14-16 alkene sodium salts, so the commercial product is a mixture rather than a single molecule.
Q:
What is in a typical AOS product?

A: AOS is mainly composed of alkene sulfonates and hydroxyalkane sulfonates, often with smaller amounts of related sulfonated species. Liquid grades usually contain about 35-40% active matter, while spray-dried powder grades may contain 90% or more active matter.
Q:
Why is AOS used in detergents and cleaning products?

A: It provides high foaming, strong detergency, and good wetting in liquid and powder laundry detergents, dishwashing products, household cleaners, and institutional cleaning systems. It is also readily soluble in water and readily biodegradable under typical conditions.
Q:
How does AOS perform in hard water compared with some other anionic surfactants?

A: AOS generally retains good cleaning and foaming performance in hard water because its sulfonate structure is less sensitive to calcium and magnesium ions than many soap-based or carboxylate surfactants. It can therefore be useful in formulations intended for areas with harder water.
Q:
How should Sodium Alpha-Olefin Sulfonate be stored and handled?

A: Keep liquid grades in sealed drums or IBCs and prevent freezing during cold storage. Keep powder grades dry to avoid caking. Store in a cool, dry, well-ventilated area away from prolonged high heat and direct sunlight, and close containers when not in use.

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