Sodium alkylbenzene sulfonates

The CMC of commercial AOS and other surfactants at 40°C has been determined by Gafa and Lattanzi [6] who plotted the surface tension of aqueous surfactant solutions against concentration. The surface tensions were determined with the ring method according to du Nouy. Table 5 gives their CMC values in mmol/L and the surface tension at the CMC in mN/m. Table 5 also contains CMC values of isomerically pure sodium alkyl sulfates, sodium alkylbenzene-sulfonates, sodium hydroxyalkanesulfonate, and sodium alkenesulfonates at 40°C, taken from the literature [39 and references cited therein]. 

RAW MATERIALS Cal soft L-60 CHEMICAL DESCRIPTION Sodium alkylbenzene sulfonate(60%) SOURCE Pi lot... 

Sodium alkylbenzene sulfonate anti-valve seat re- PEC/2 6 February 2004... 

Sodium alkylbenzene sulfonate from Antara Chemicals. 

Terpolymer Resins. DBPF was dissolved in a mixture of styrene, acrylonitrile, and mercaptan (Table I). About one-tenth of this solution was added to a solution of sodium alkylbenzene sulfonate emulsifier (Nacconal NRSF, 2 parts) in deionized water (180 parts) at 60°C. Potassium persulfate (0.3 part) was added, followed by the remaining monomer mixture at a rate consistent with temperature control (60°C.) Gentle agitation and a nitrogen atmosphere were maintained throughout the polymerization. The latex was maintained at 60 °C. until a solids determination indicated no further conversion (6—8 hours total polymerization time). 

Sulfonation of LAB. The sulfonation of alkylbenzenes leads to sulfonic acid tyre product, which is then neutralized with a base such as sodium hydroxide to produce sodium alkylbenzene sulfonate. The sulfonation reaction is highly exothermic and instantaneous. An efficient reactor heat removal system is used to prevent the decomposition of the resultant sulfonic acid. The sulfonation reaction takes place by using oleum (SO3H2SO4) or sulfur trioxide (SO3). Although, the oleum sulfonation requires relatively inexpensive equipment, the oleum process has major disadvantages compared to sulfur trioxide. The need for spent acid stream disposal and the potential corrosion owing to sulfuric acid generation increased the problems related to oleum process [1]. 

Acids such as fatty acids and alkylbenzene sulfonic acids are neutralized with NaOH during slurry preparation to form soap and sodium alkylbenzene sulfonate, respectively. 

In the mid- 1960s branched-chain surfactants were replaced by more biodegradable analogs in all laundry products. In heavy-duty liquids sodium alkylbenzene-sulfonate, derived from an alkylbenzene with a tetrapropylene side chain, was replaced by its straight-chain analog, referred to as sodium linear alkylbenzesul-fonate (LAS). 

Both anionic and nonionic surfactants are used in the formulation of liquid detergents. Surfactants are primarily responsible for wetting the surfaces of fabrics as well as the soil (reducing surface and interfacial tension), helping to lift the stains off the fabric surface, and stabilizing dirt particles and/or emulsifying grease droplets [1-4], The main anionic surfactants are sodium alkylbenzene sulfonates, alkyl sulfates, and alkylethoxylated sulfates. The nonionic surfactants used to formulate heavy-duty liquids are primarily ethoxylated fatty alcohols. Other surfactants are also used in HDLDs and are discussed in a subsequent section. 

Figure 3. Adsorption of de-oiled sodium alkylbenzene sulfonates at 30°C...

Sodium Alkylbenzene- sulfonates Goggles or face shield, protective gloves. Flush with copious amounts of water. Rush with copious amounts of water. 

Lumo. I chimmer Schwarz] Sodium alkylbenzene sulfonate detergents. 

Sodium Alkylbenzene Sulfonate (LAS) Alkylphenol Ethoxylate Ethylene Glycol Monobutyl Ether Sodium Xylene Sulfonate Water... 

Zohar. pSohar Detergent Factory] Sodium alkylbenzene sulfonate and builders dme gent powders. 

Sodium Alkylbenzene Sulfonate (Calsoft L-40) Butyl Cellosolve... 

C12-15 linear alcohol, 3 moles EOi Sodium alkylbenzene sulfonate ... 

It is well established that ultralow interfacial tension plays an important role in oil displacement processes [16,18]. The magnitude of interfacial tension can be affected by the surface concentration of surfactant, surface charge density, and solubilization of oil or brine. Experimentally, Shah et al. [23] demonstrated a direct correlation between interfacial tension and interfacial charge in various oil-water systems. Interfacial charge density is an important factor in lowering the interfacial tension. Figure 6 shows the interfacial tension and partition coefficient of surfactant as functions of salinity. The minimum interfacial tension occurs at the same salinity where the partition coefficient is near unity. The same correlation between interfacial tension and partition coefficient was observed by Baviere [24] for the paraffin oil-sodium alkylbenzene sulfonate-isopropyl alcohol-brine system. 

Sodium alkylbenzene sulfonate, branched. See Sodium dodecylbenzenesulfonate Sodium alkyl sulfate CAS 8036-54-2 Properties HLB 40.0 anionic Uses Surfactant pharmaceuticals (topicals, dentals)... 

SDBS Sodium alkylbenzene sulfonate, branched Sodium lauryl benzene sulfonate... 

Sodium cocoyl isethionate Sodium alkylbenzene sulfonate Anhydrous soap Sodium isethionate Stearic acid Sodium sulfate... 

The ability of exogenous proteins to reduce the skin and eye irritation potential of detergents was highlighted many decades ago in the cosmetic chemistry community. First extensive insights were probably those of Meinecke (4), who reported that addition of a protein hydrolysate or a protein-fatty acid condensate to a solution of a highly irritant surfactant (sodium alkylbenzene sulfonate) caused a remarkable increase in the skin tolerability of the product and postulated a protective effect based on the formation of a protein colloidal layer on the skin, which could prevent or minimize the direct interaction of tenside molecules with skin keratin. The same interpretation has been advanced more recently by other authors (116-118). 

According to M. C. Frankenstein, sodium alkylbenzene sulfonate can be used to flotate beryl [11]. The molecular weight of sodium alkylbenzene sulfonate is 450-470. The number of C atoms of hydrocarbon chain is 25-30. And the melting point of sodium alkylbenzene sulfonate is 250-260 F. 

D 1768-89 Sodium Alkylbenzene Sulfonates in Synthetic Detergents by Ultraviolet Absorption... 

Sodium alkylbenzene sulfonate, linear Active % 40 Solid, ground flake... 

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