Sodium Dodecylbenzenesulphonate

• CAS: 25155-30-0
• Catalog Number: ACM25155300-4
• Category: Main Products
• Molecular Weight: 348.48
• Molecular Formula: C18H29NaO3S
• Description: Sodium dodecylbenzenesulfonates are organic compounds with the formula C12H25C6H4SO3Na. They are colourless salts with useful properties as surfactants. They are usually produced as a mixture of related sulfonates.
• Synonyms: sodium 2-phenyldodecane-p-sulfonate;4-(2-dodecyl)benzene sulfonate sodium salt;sandet60;mercol30;NACCONAL
• IUPAC Name: Sodium dodecylbenzenesulphonate
• Appearance: white or light yellow flakes
• Application: Sodium Dodecylbenzenesulphonate is a surfactant commonly used in proteomics research and as an anionic detergent. It is utilized to stabilize dispersions of graphene nanoflakes and suspend single-walled carbon nanotubes in aqueous media. This white to light yellow substance is soluble in water but should be handled with care due to its potential environmental hazards. In industrial settings, it is used as a synthetic detergent and in specific ore types as part of tailored frothers for flotation processes. It is important to note that sodium dodecylbenzenesulphonate is incompatible with strong oxidizers and may cause minor skin and eye irritation if not handled properly.
• EC Number: 246-680-4
• Exact Mass: 348.17400
• Hazard Codes: Xn
• Hazard Statements: Xn:Harmful
• HS Code: 3402110000
• LogP: 6.13490
• MDL Number: MFCD00011508
• PSA: 65.58
• Safety Description: S26-S27-S36/37/39
• Stability: Stable.
• WGK Germany: 2

Case Study

Corrosion Inhibition of Mild Steel in Sulfuric Acid Solution by Sodium Dodecylbenzenesulfonate (SDBS)

Hosseini, Mirghasem, Stijn FL Mertens, and Mohammed R. Arshadi. Corrosion Science 45.7 (2003): 1473-1489.

The corrosion inhibition of mild steel in sulphuric acid solution by sodium dodecylbenzenesulfonate (SDBS) and hexamethylenetetramine (HA) was investigated using weight loss, electrochemical impedance and Tafel polarization measurements. For HA, a monotonic increase in inhibition efficiency with concentration was observed. However, for SDBS, the best inhibition efficiency was observed at concentrations close to 250 ppm, which was attributed to the formation of semi-micelle aggregates, which at higher concentrations induce desorption of the inhibitor from the metal/solution interface. Upon mixing HA and SDBS, concentration regions showing synergistic and antagonistic inhibition behaviour were identified, and it was concluded that electrostatic interactions between adsorbed ions could be responsible for both phenomena. The relevance of Langmuir and Frumkin isotherms in describing the adsorption behaviour of HA and SDBS was tested.
For weight loss measurements, mild steel samples with composition (wt%) C 0.01, Si 0.35, P 0.018, Cr 0.04, Mo 0.03, Ni 0.017, Cu 0.02, Al 0.06 and Fe (balance) and dimensions 1*15*15 mm were used. The samples were polished to a mirror finish using sandpaper, degreased by ultrasonic treatment in analytical reagent grade ethanol, and blown dry with nitrogen. Completely uniform water wettability after treatment is considered a good indicator of surface cleanliness. For polarization and electrochemical impedance studies, the metals were embedded in epoxy resin with a geometric surface area of 1 cm exposed to the electrolyte. Prior to these measurements, the exposed surface was pretreated in the same way as for the weight loss experiments. All experiments were performed at a constant temperature of 30 °C and the electrolyte solution was kept in equilibrium with the atmosphere (i.e., aerated solution). All chemicals were of analytical reagent grade and used without further purification, except for sodium dodecylbenzene sulfonate (SDBS), and solutions were prepared using double distilled water. SDBS was a solid, with the remainder being sodium sulfate. Importantly, no surfactant impurities were reported in the product. This study was conducted in sulfuric acid medium, and the presence of small amounts of additional sulfate ions was considered to have no impact on the conclusions. When preparing SDBS solutions, the actual surfactant concentration in the starting material was taken into account by weighing 1/0.8 1/4 1.25 times the theoretical mass of pure SDBS.

Study of novel ionic mixtures containing sodium dodecylbenzene sulfonate

Šegota, Suzana, Stanka Heimer, and Đurđica Težak. Colloids and Surfaces A: Physicochemical and Engineering Aspects 274.1-3 (2006): 91-99.

Conductivity, potentiometric, electrophoretic and tensiometric studies of the aggregation characteristics of sodium dodecylbenzene sulfonate (SDBS) and didodecyldimethylammonium bromide (DDAB) ionic surfactant mixtures in the low concentration region showed that coacervation, micelle and vesicle formation occurred at 0.2% weight fraction of anionic and cationic components. The measured degree of dissociation of counterions from micelles, α = (0.239 ± 0.006), indicated good micelle stability. Quantum mechanical calculations, using the lowest energy molecular conformer, calculated the minimum area per molecule, A = 0.683 nm2, which agrees well with the experimentally obtained A = (0.689 ± 0.13) nm2. The structures and their packing parameters, expected aggregate shapes, micelles and vesicles were observed to depend on their mole fractions in the surfactant mixture. The micelle area with SDBS excess and the vesicle area with DDAB excess are shown in the phase diagram accordingly; small changes in the surfactant mole fraction are decisive for the structure of the aggregates in a highly dilute concentration range.
Each sample was prepared by weighing the appropriate amount of high-purity chemicals into a glass tube and adding water; the tube was immediately sealed. Approximately 450 samples were prepared over the entire composition range. The samples were gently shaken; after that, they were thermostated at 30°C (above the Krafft temperature of an equimolar SDBS/DDAB/H2O mixture) for 2 months to reach equilibrium. The method used for sample preparation was carefully chosen to ensure spontaneous formation of vesicles. All concentrations are given on a molar basis.

Custom Q&A

What is the molecular formula of Sodium Dodecylbenzenesulphonate?

The molecular formula of Sodium Dodecylbenzenesulphonate is C18H29NaO3S.

What is the molecular weight of Sodium Dodecylbenzenesulphonate?

The molecular weight of Sodium Dodecylbenzenesulphonate is 348.5 g/mol.

What are some synonyms for Sodium Dodecylbenzenesulphonate?

Some synonyms for Sodium Dodecylbenzenesulphonate include Sodium o-dodecylbenzenesulfonate and Dodecyl benzenesulfonic acid, sodium salt.

When was Sodium Dodecylbenzenesulphonate created and last modified?

Sodium Dodecylbenzenesulphonate was created on 2008-02-05 and last modified on 2023-12-30.

What is the IUPAC name of Sodium Dodecylbenzenesulphonate?

The IUPAC name of Sodium Dodecylbenzenesulphonate is sodium;2-dodecylbenzenesulfonate.

What is the InChIKey of Sodium Dodecylbenzenesulphonate?

The InChIKey of Sodium Dodecylbenzenesulphonate is HFQQZARZPUDIFP-UHFFFAOYSA-M.

How many hydrogen bond acceptors does Sodium Dodecylbenzenesulphonate have?

Sodium Dodecylbenzenesulphonate has 3 hydrogen bond acceptors.

What is the topological polar surface area of Sodium Dodecylbenzenesulphonate?

The topological polar surface area of Sodium Dodecylbenzenesulphonate is 65.6 Ų.

How many rotatable bonds does Sodium Dodecylbenzenesulphonate have?

Sodium Dodecylbenzenesulphonate has 12 rotatable bonds.

What is the UNII number for Sodium Dodecylbenzenesulphonate?

The UNII number for Sodium Dodecylbenzenesulphonate is 2855754K9T.