Alpha Olefin Sulfonate

Overview

Alpha Olefin Sulfonate (AOS) is an anionic surfactant with the CAS number 68439-57-6 and EC number 931-534-0. It is a versatile chemical derived from alpha olefins, known for its excellent foaming, emulsifying, and cleaning properties. Supplied by SoleChem Chemicals, AOS is widely used in personal care and industrial cleaning applications.

Physical and Chemical Properties

• Chemical Formula: Variable, typically R-CH=CH-(CH2)n-SO3Na (R = alkyl chain)

• Appearance: Light yellow to amber liquid or powder

• Molecular Weight: Varies based on chain length

• Solubility: Highly soluble in water, forming clear solutions

• pH: 7.0–9.0 (1% aqueous solution)

• Density: ~1.05 g/cm³ (liquid form)

Production Method

Alpha Olefin Sulfonate is produced by sulfonating alpha olefins, typically C14–C16, with sulfur trioxide, followed by neutralization with sodium hydroxide. The process yields a mixture of alkene sulfonates and hydroxyalkane sulfonates, ensuring high biodegradability and compatibility with various formulations.

Industrial Applications

• Personal Care: Used in shampoos, body washes, and liquid soaps for its high foaming and mild cleansing properties.

• Household Cleaning: Incorporated into dishwashing liquids, laundry detergents, and surface cleaners for effective grease and stain removal.

• Industrial Cleaning: Employed in hard surface cleaners and degreasers due to its robust emulsifying capabilities.

• Textile Processing: Acts as a wetting agent and emulsifier in textile manufacturing.

Safety Information

• Handling: Use gloves and eye protection to avoid irritation. Avoid prolonged skin contact.

• Storage: Store in a cool, dry place in tightly sealed containers to prevent moisture absorption.

• Hazards: May cause skin and eye irritation. Avoid inhalation of dust (powder form). Non-toxic but handle with care.

• First Aid: Rinse skin or eyes with plenty of water if contacted. Seek medical advice if irritation persists.