Sodium Alpha Olefin Sulfonate (AOS-40) is a 40% active solution of sodium C14-16 olefin sulfonate — a high-foaming, mild anionic surfactant perfect for sulfate-free shampoos, body washes, and cleansers. Made primarily from coconut sources, this ingredient offers excellent flash foam, good emulsification, and gentle cleansing for skin and hair.
It’s also biodegradable, stable across a wide pH range, and works well even in acidic formulas containing AHAs or salicylic acid. AOS-40 is commonly used in personal care and household products, including liquid soaps, bubble baths, facial cleansers, and even car wash formulations.
Technical Specs
| Property | Details |
|---|---|
| INCI Name | Sodium C14-16 Olefin Sulfonate |
| CAS Number | 68439-57-6 |
| Appearance | Pale yellow, clear liquid |
| pH (5% solution) | ~8.70 |
| Active Matter | ~38.17% |
| Viscosity | <100 cP @ 25°C |
| Solubility | Water-soluble |
| Country of Origin |
USA |
| Storage | Keep tightly sealed in a cool, dry area. Avoid freezing. |
Key Features
• High foaming and cleansing power
• Improved mildness over lauryl sulfates
• Stable across broad pH levels
• Excellent compatibility with anionic, nonionic, and amphoteric surfactants
• Readily biodegradable
Suggested Usage Rates:
• Shampoos, Body Washes, Hand Soaps: 5%–20%
• Bath Products, Bubble Baths: 5%–15%
• Light-Duty & Car Wash Cleaners: 5%–25%
• Heavy-Duty Detergents: Up to 30%
For External Use Only.
Not for internal use. Always test formulations before final production. COA available upon request.
