Sodium alkyl naphthalene sulfonate, also known as sodium alkylnaphthalenesulfonate or SANS, is a class of anionic surfactants that are widely used in various industrial applications. These surfactants are derived from naphthalene and are known for their excellent wetting, dispersing, and emulsifying properties.
Powder Form
| Property | Value |
| Appearance | White/Beige Powder |
| Active Content (%) | 60-80 |
| pH (10% solution) | 5-8 |
| Bulk Density (g/ml) | 0.50-0.70 |
| Loss on Drying (%) | ≤10 |
| Sulfate Content (%) | 15-30 |
| Water Solubility | Excellent |
Liquid Form
| Property | Value |
| Appearance | Liquid, dark brown |
| Active Content (%) | 60-80 |
| pH (10% solution) | 5-8 |
| Viscosity (at 25°C, mPa.s) | 200-1000 |
| Density (at 25°C, kg/L) | 1.10-1.30 |
| Flash Point (°C) | >100 |
| Solubility in Water | Soluble |
| Sulfate Content (%) | 15-30 |
Applications
- Textile industry: Used as wetting agents, leveling agents, and dye dispersants in dyeing and finishing processes.
- Detergents and cleaners: Employed as surfactants in household and industrial cleaners, dishwashing liquids, and laundry detergents.
- Concrete admixtures: Added to concrete mixes to improve workability, dispersibility, and air entrainment.
- Oil and gas industry: Used as emulsifiers, wetting agents, and dispersants in drilling fluids and enhanced oil recovery processes.
- Paints and coatings: Incorporated as wetting agents, dispersants, and emulsifiers in various paint formulations.
Structure
They are produced by sulfonating naphthalene with an alkyl group, typically a linear or branched alkyl chain ranging from C6 to C16. The resulting molecule has a hydrophobic alkyl chain and a hydrophilic sulfonate group, giving it its surfactant properties.
Properties
- Good wetting and dispersing abilities
- Excellent emulsifying and solubilizing properties
- Resistance to hard water and electrolytes
- Thermal stability
- Biodegradability (varies depending on the alkyl chain length)
Environmental considerations: While SANS are generally considered biodegradable, their environmental impact depends on factors such as alkyl chain length and concentration. Proper handling and disposal practices are necessary to minimize their potential adverse effects on aquatic ecosystems.
Product Documentation and Supply Enquiries
Batch COA, TDS, SDS/MSDS, samples, packaging options and commercial quotations are available on request. Contact info@greenagrochem.com or use the contact form.