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  • Dodecylbenzenesulfonic Acid Sodium Salt
  • Dodecylbenzenesulfonic Acid Sodium Salt
  • Dodecylbenzenesulfonic Acid Sodium Salt
  • Dodecylbenzenesulfonic Acid Sodium Salt

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Dodecylbenzenesulfonic Acid Sodium Salt

Dodecylbenzenesulfonic Acid Sodium Salt

Basic Information

CAS No.: 25155-30-0
Molecular Formula: C18H29NaO3S
Molecular Weight: 348.48

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Product Details

Dodecylbenzenesulfonic Acid Sodium Salt is a white to light yellow powder or granule. Industrial-grade products may be light brown due to trace impurities, have no obvious pungent smell, and are prone to moisture absorption (slight lumps may form after moisture absorption, but it does not affect dissolution and activity).


Chemical Properties

PropertyValue
Melting point>300 °C
Boiling point660.62 °C [at 101 325 Pa]
Density1.02 g/cm³
Vapor pressure0   Pa at 25 °C
Refractive index1.359
Storage condition2-30 °C
SolubilityWater:   soluble 0.8 g/L at °C (value appears incomplete; likely at 20-25 °C)
Acidity coefficient (pKa)0.7 [at 20 °C]
FormPowder
ColorLight yellow
OdorSlight, characteristic odor
Water solubility800 mg/L at 25 °C
Merck148,612
BRN4171051
Henry's Law Constant1.6×102 mol/(m3Pa)1.6×102mol/(m3Pa) at 25 °C, HSDB (2015)
StabilityStable
Cosmetic ingredient functionCLEANSING SURFACTANT - CLEANSING
InChI1S/C18H30O3S.Na/ c1-2-3-4-5-6-7-8-9-10- 11-12-17-13-15-18  (16-14-17) 22(19,20)21; /h13-16H, 2-12H2,1H3, (H,19,20,21); /q;+1/p-1
InChIKeyJHJUUEHSAZXEEO-UHFFFAOYSA-M
SMILES[Na+]CCCCCCCCCCCc1ccc(cc1)S([O-]) (=O) =O
LogP1.96   at 25 °C
CAS database reference25155-30-0   (CAS DataBase Reference)
EPA chemical substance informationSodium dodecylbenzenesulfonate (25155-30-0)


Safety Information

PropertyValue
Hazard Codes

Xn

Risk Statements

22-37/38-41

Safety Statements

26-27-36/37/39

WGK Germany

2

RTECS

DB6825000

HS Code

2904.10.3700


Product Usage

Sodium dodecylbenzenesulfonate is one of the most widely used anionic surfactants. In the detergent industry, it is the core detergency component in household laundry powders, dishwashing liquids, and industrial cleaners, offering excellent detergency, emulsifying, and foaming properties. In the textile and dyeing industry, it is used as a penetrating agent and leveling agent to help dyes penetrate evenly. In pesticide formulations, it acts as an emulsifier and dispersant to improve suspension stability. Additionally, it is used in electroplating, leather processing, and emulsification viscosity reduction in oil extraction. Its advantages include hard water resistance, good biodegradability, and high cost-effectiveness, though mild skin irritation should be noted.

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