Sodium alpha-olefin sulfonate (AOS), CAS 68439-57-6, is an anionic surfactant supplied in two forms: a 92% light-yellow powder and a 34-36% light-yellow liquid. AOS is valued for hard-water tolerance, rich foam and mildness, and is used in personal care, household and industrial cleaning, enhanced oil recovery and emulsion polymerisation. PolyBlueChem supplies both grades with per-batch COA and SDS.
Specifications – AOS 92% (powder)
| Property | Specification |
|---|---|
| Appearance (25 deg C) | Light-yellow powder |
| Odour | No strange odours |
| Active matter (%) | 90 – 94 |
| Unsulfated matter (%) | Max 3.0 |
| Inorganic salt (%, as Na2SO4) | Max 5.0 |
| Free alkali (%, as NaOH) | Max 1.0 |
| Colour (Klett, 5% aqueous solution) | Max 90 |
| Water (%) | Max 3.0 |
Specifications – AOS 34-36% (liquid)
| Property | Specification |
|---|---|
| Appearance (25 deg C) | Light-yellow liquid |
| Odour | No strange odours |
| Active matter (%) | 34 – 36 |
| Unsulfated matter (%) | Max 1.75 |
| Inorganic salt (%, as Na2SO4) | Max 1.5 |
| Free alkali (%, as NaOH) | Max 0.3 |
| Colour (Klett, 5% aqueous solution) | Max 80 |
Basic Information
| CAS number | 68439-57-6 |
| Chemical name | Sodium alpha-olefin sulfonate (sodium C14-16 olefin sulfonate) |
| Empirical formula | RCH=CH(CH2)n-SO3Na and RCH(OH)(CH2)n-SO3Na (alkene and hydroxyalkane sulfonate) |
| Type | Anionic surfactant |
Applications
- Personal care – shampoos, body washes, cleansers, hand soaps, oral care.
- Household and industrial cleaning – liquid and powder detergents, dishwash, hard-surface cleaners.
- Enhanced oil recovery – surfactant flooding, foam flooding (hard-water and brine tolerant).
- Emulsion polymerisation – emulsifier for acrylic and other latices.
- Agrochemicals – wetting and dispersing aid in formulations.
- Fire-fighting foam and textile wetting agents.
Packaging and documentation
- Powder (92%) – 25 kg PP/PE bags and 1000 kg jumbo bags.
- Liquid (34-36%) – 200 L drums, 1000 L IBCs, ISO tanks and bulk.
- Per-batch certificate of analysis (COA) and safety data sheet (SDS).
- Store sealed and dry; for the liquid, protect from freezing.
PolyBlueChem supplies sodium alpha-olefin sulfonate (AOS, CAS 68439-57-6) in 92% powder and 34-36% liquid grades, with per-batch COA and SDS and FOB/CIF delivery. Contact us with your grade, tonnage and delivery port for a quotation.
