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Anionic Surfactants

The primary detergents of cleaning chemistry u2014 LAS, SLES, SLS, and AOS u2014 plus a DOSS wetting agent and a sodium xylene sulfonate hydrotrope for laundry, dish, and hard-surface formulations.

Overview

Anionic surfactants are negatively charged surface-active agents that do mostnof the cleaning work in laundry detergents, liquid dish soaps, and hard-surface cleaners.nThey lift and suspend oily and particulate soil so it rinses away. Sodium linear alkylbenzenensulfonate (LAS) is the highest-volume workhorse; the ether sulfate (SLES) and lauryl sulfaten(SLS) add foam and form the basis of most liquid cleaners.

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These surfactants foam readily and clean at low cost, but foam is a liability in machinendishwash and clean-in-place (CIP) circuits, and detergency drops in hard water as calcium andnmagnesium ions tie up the surfactant. Pair them with a builder or chelant where water hardnessnruns above roughly 150 ppm as CaCO3, and specify alpha-olefin sulfonate (AOS) over LAS wherenhard-water tolerance matters.

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For concentrated, clear formulas a hydrotrope such as sodium xylene sulfonate keeps surfactantsnand solvents in a single phase, while dioctyl sodium sulfosuccinate (DOSS) is the choice whennrapid substrate wetting matters more than foam. Specify SLES for liquid dish and personal-cleansingnbases where foam and viscosity response are priorities; reserve LAS for cost-driven powder andnliquid laundry.

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Where it's used
  • Powder and liquid laundry detergents (LAS as the primary detergent)
  • Liquid dish soap, shampoo, and body-wash bases (SLES/SLS for foam)
  • Hard-surface and all-purpose cleaners
  • Concentrated formulas needing a hydrotrope or coupling agent (sodium xylene sulfonate)
  • Wetting and rapid-penetration applications (dioctyl sodium sulfosuccinate)
Frequently asked questions
What is the difference between LAS, SLES, and SLS?
LAS is the lowest-cost, high-detergency workhorse for laundry. SLES (sodium laureth sulfate) foams well and tolerates hard water better, making it the standard anionic for liquid dish and personal-cleansing bases. SLS gives high, dense foam. Most liquid formulas blend SLES with a co-surfactant.
Which anionic surfactant works best in hard water?
Alpha-olefin sulfonate (AOS) tolerates hard water better than LAS because it is less affected by calcium and magnesium ions. For any anionic surfactant in water above roughly 150 ppm hardness, add a builder or chelant to protect detergency.
What is a hydrotrope and do I need one?
A hydrotrope such as sodium xylene sulfonate keeps surfactants and solvents in a single clear phase in concentrated formulas. Use one when a concentrate clouds, separates, or gels at high active levels.
Does RawSource supply anionic surfactants in bulk?
Yes. RawSource sources LAS, SLES, SLS, AOS, dioctyl sodium sulfosuccinate, and sodium xylene sulfonate in drums, totes, and IBCs, each with CAS, SDS, TDS, and CoA. Submit a bulk RFQ with your grade and volume.
Disclaimer. Information on this page is provided for general reference and compiled from authoritative public sources (e.g. PubChem/ECHA). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot you purchase governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim. Always consult the current Safety Data Sheet (SDS) before handling, and confirm regulatory status, classification, and suitability for your application and jurisdiction.
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