Overview
Sodium dodecylbenzenesulfonate ( CAS 25155-30-0 ), commonly identified in trade as SDBS, is an anionic surfactant derived from the neutralization of dodecylbenzenesulfonic acid with sodium hydroxide.
It delivers strong detergency, emulsification, and foam generation across a broad range of industrial and consumer formulations. In household and industrial cleaning products, SDBS functions as the primary active surfactant.
It is used in liquid detergents, dishwashing formulations, and hard-surface cleaners, where it breaks down grease and oils effectively at low concentrations. Textile processors rely on it as a scouring and wetting agent.
It helps to remove sizing agents, oils, and contaminants from fiber surfaces prior to dyeing. In water treatment, it supports the dispersion of suspended solids and acts as an emulsifier in effluent treatment processes.
Personal care formulators incorporate it into shampoos and body washes where controlled foaming and cleansing performance are required. Sodium dodecylbenzenesulfonate is supplied as a white to light yellow powder.
It is also available as a viscous liquid slurry, with active matter content typically ranging from 90% in powder form to 30–60% in aqueous paste or slurry grades. Technical grade is the standard commercial specification.
Detergent-grade material meeting defined active content thresholds is available for formulation use. Packaging options commonly include 25 kg bags for powder and IBC totes or drums for liquid grades.
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Physical Properties
| Melting Point | >300 °C |
| Boiling Point | 660.62°C[at 101 325 Pa] |
| Density | 1 g/cm³ (solid) |
| Appearance | white or light yellow flakes |
| Color | light yellow |
| Odor | Slight, characteristic odor |
| Form | powder |
| Water Solubility | 800mg/L at 25℃ |
| Vapor Pressure | 0Pa at 25℃ |
| Refractive Index | 1.359 |
| Log P | 1.96 at 25℃ |
Safety & Handling
Danger GHS05 GHS07 Hazard Statements H302 Harmful if swallowed H312 Harmful in contact with skin H315 Causes skin irritation H317 May cause an allergic skin reaction H318 Causes serious eye damage H319 Causes serious eye irritation H335 May cause respiratory irritation H412 Harmful to aquatic life with long lasting effects Precautionary Statements P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P317 Get emergency medical help. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P330 Rinse mouth. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P333+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P305+P354+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 29041000 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 2 |
Other Names
Related Products
Chemical Properties
- CAS Number
- 25155-30-0
- EC Number
- 246-680-4
- Mol. Weight
- 348.5
- HS Code
- 29041000
- Category
- Surfactants