Calsoft® AOS-40 is a 40% active solution of sodium C14-16 alpha olefin sulfonate, providing high foaming power, good emulsification, skin mildness, and excellent lime soap dispersion for personal care and HI&I applications.

INCI Name: Sodium C14-16 Olefin Sulfonate

Chemical Name: Sulfonic acids, C14-16-alkane hydroxy and C14-16-alkene, sodium salts

CAS Number: 68439-57-6

Chemical Family: Sulfonates

Synonyms: Alkenes, C14-16 α-, sulfonated, sodium salts, Sulfochem AOS-K, C14-C16-Alkanehydroxysulfonic Acids Sodium Salts

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Enhanced TDS

Identification & Functionality

Features & Benefits

Benefit Claims
HII Features
Product Benefits
  • Calsoft® AOS-40 has excellent cost performance characteristics and foam properties, along with broad pH stability, great viscosity building, and mildness properties.
  • Calsoft® AOS-40 offers improved mildness over sodium lauryl sulfate. Calsoft® AOS-40 is fully compatible with other anionic, amphoteric, and nonionic surfactants.
  • Calsoft® AOS-40 is on the List of Trade Names of Inert Ingredients Database.
  • Calsoft® AOS-40 is approved for use as an inert ingredient in pesticide formulations for pre-harvest use and is exempt from requirement of a tolerance under 180.920 without limitation.

Applications & Uses

Application Format
Bath & Shower Applications
Hair Care Applications
Home Care Applications
I&I Cleaning Applications
Personal Hygiene Applications
Product Applications

Calsoft® AOS-40 is an anionic surfactant of choice for personal care and HI&I applications. Calsoft® AOS-40 offers excellent cleansing, foam characteristics, viscosity, and skin mildness to produce cost effective and high performing shampoo, body wash, hand soap, and pet care formulations. Calsoft® AOS-40 provides copious stable foam, mildness to the hands, hard water tolerance, excellent cleaning and grease cutting properties in light-duty dish liquid and heavy-duty laundry detergents. Calsoft® AOS-40 provides exceptional foam volume and cleaning characteristics in both manual and automatic car wash products.


Clear pale yellow liquid (at 25°C)
Miscible in
Compatible with
Other anionic, amphoteric, and nonionic surfactants
Typical Properties
ValueUnitsTest Method / Conditions
Active Content40wt%-
Unsulfonated Materialmax. 1.25wt%-
Sodium Sulfatemax. 1.00wt%-
Sodium Chloridemax. 1.00wt%-
Color (at 5% Active Solution, 40mm)max. 60-Klett
pH (at 10% Solution)7.0 - 9.0--
Viscosity (at 25°C)max. 500 cPs-
Foam Height (at 25°C, 1% Active Solution, 5 Minutes)141mm-
Foam Height (at 25°C, 1% Active Solution, Initial)135mm-
Freeze Point28°F-

Regulatory & Compliance

Packaging & Availability

Packaging Type
Supplied by
Packaging Information

Calsoft® AOS-40 is available in 485 lb. poly drums, 2300 lb. poly totes, and bulk quantities.

Storage & Handling

Shelf Life
2 years
Storage and Handling Information
  • Store in a tightly closed container.
  • Do not store with strong oxidizing agents. Avoid contact with aluminum, iron, and copper. Avoid excessive heat.
  • Recommended storage temperatures are 51-100°F to protect from freezing and from forming a solid gel at the bottom of containers.