Sodium Lauryl Sulfate (SLS)

Primary uses

• High-foam anionic cleansing
• Wetting and emulsification in technical systems
• Foam boosting in powder and tablet formats

Applications

• Toothpaste and oral-care foaming
• Powder and tablet cleaning formats
• Industrial and institutional cleaners
• Laboratory and technical wetting

Advantages

• Available in dry needle, granule and powder forms that dry-blend without water addition
• Strong wetting and foaming performance in oral care, powder and tablet formats
• Non-ethoxylated chemistry, which some brand platforms and technical specifications require

Limitations to consider

• Harsher on skin than mild anionics and amphoterics, so leave-on and sensitive-skin formats look elsewhere
• Dry forms create dust handling requirements the SDS will describe; this is a real plant issue, not a formality
• Does not respond to salt thickening the way an ethoxylated system does, so viscosity must be built another way
• Use level is established in your own formulation by bench trial and stability testing. Supplier literature ranges are a starting point for that work, not a specification, and they are not reproduced here as one.
• Colour, odour and sensory behaviour vary between manufacturing sources even where the INCI name is identical, and in personal care those differences are visible to the end consumer. Approve a production-representative sample against your own finished format before the first commercial shipment.

How to choose the right grade

• Start from the finished format and the claim platform: sulfate-free, baby-mild, high-foam value or professional cleaning all pull in different directions
• State the surfactant system you already run, because a co-surfactant only makes sense in the context of the primary it is paired with
• Confirm how the material is metered and mixed on your line — pastes, needles, granules and dilute solutions need different handling
• Decide the viscosity mechanism you intend to use, since salt response and polymer thickening behave differently between surfactant families
• Check preservation and pH of the raw material against your finished formulation before switching source
• Confirm the physical form your process can handle: needles, powder and solution behave completely differently on the floor
• For oral care, confirm which documentation set your quality system requires before the material enters a batch
• Bench results do not transfer automatically to production. Order of addition, shear, neutralisation and cooling profile all change behaviour at scale, so plan a pilot batch on the intended equipment before committing to a production volume.
• Exact specification is confirmed against supplier documentation at quotation.

Typical grades

• Needle and granule forms for dry blending
• Powder forms for tablet and powder cleaning formats
• Aqueous solution forms where liquid dosing is preferred
• Buyers search for personal-care, cosmetic and pharmaceutical grade material by name, and those words describe what the buyer needs rather than what is asserted here. Which grade a specific offer corresponds to, and what documentation supports it, is read from the supplier documentation for the exact product quoted.
• Active matter, assay and purity are per-offer values that are declared by the supplier for the exact lot. They change both the use level in the formulation and the true cost per unit of function delivered, so quotations are compared on declared active content rather than on price per kilogram.
• Natural, plant-derived, hypoallergenic, dermatologically tested and similar positioning statements belong to the finished brand and must be supported by the brand owner's own evidence. Any such wording attached to a raw material is treated here as a buyer search term, not as a substantiated property of the material offered.