Sodium Lauryl Sulfate (SLS, CAS 151-21-3) is the classic high-foam anionic surfactant — a workhorse in toothpaste, shampoos, body washes, household detergents and industrial cleaners. It delivers powerful foaming, wetting and cleansing at very economical cost.
Physical & Chemical Properties
- INCI: Sodium Lauryl Sulfate
- Appearance: white to pale yellow powder, granules, needles or aqueous solution
- Solubility: soluble in water, forming clear solutions
- pH (1% solution): approx. 6.0–9.0
- Ionic type: anionic
- Foam: high, dense, fast-forming foam
- Molecular formula: C12H25NaO4S (sodium dodecyl sulfate)
Key Benefits for Formulation
- Exceptional foaming: high, dense and fast foam
- Strong cleansing & wetting: removes oils and residues efficiently
- Cost-effective: economical workhorse for volume products
- Versatile: personal care, household and industrial applications
- Proven performance: decades of industry use and data
Main Applications
- Toothpaste: foaming and cleansing agent
- Shampoo & body wash: primary foaming surfactant
- Household detergents: dish, laundry and surface cleaners
- Industrial cleaners: degreasing and wetting
- Emulsion polymerization & industrial auxiliaries
Why Choose Our Bulk Sodium Lauryl Sulfate (SLS)?
- GMP manufacturing: full quality control from raw material to finished product
- Complete documentation: COA, SDS and heavy metal test reports available on request
- Flexible supply: MOQ and lead time on inquiry, from R&D samples to mass production
- Export experience: reliable shipping to EU, North America, Australia and Middle East
Recommended Usage
Use level varies by application: 0.5%–3% in toothpaste; 5%–20% in shampoos and body washes; higher in industrial cleaners. Combine with amphoteric or non-ionic surfactants to modulate foam and mildness.
FAQ About Wholesale Sodium Lauryl Sulfate (SLS)
What is the CAS number of SLS?
CAS 151-21-3 (sodium dodecyl sulfate, C12H25NaO4S).
What is the INCI name?
Sodium Lauryl Sulfate.
Is SLS the same as SLES?
No — SLS (sodium lauryl sulfate) is generally more cleansing and can be more irritating than SLES (sodium laureth sulfate).
Is SLS safe for toothpaste?
Yes — it is a standard foaming agent in toothpaste at regulated use levels; some brands offer SLS-free alternatives.
What is the recommended usage level?
0.5%–3% in toothpaste; 5%–20% in shampoos/body washes; higher in industrial cleaners.
Does SLS produce high foam?
Yes — it is known for high, dense, fast-forming foam.
Is it suitable for sensitive skin?
It can be more irritating than mild surfactants; sensitive-skin formulas often use amino-acid or amphoteric alternatives.
What is the appearance?
White to pale yellow powder, granules, needles or solution.
Start Your Sodium Lauryl Sulfate (SLS) Bulk Order
Contact our sales team today for spec sheets, samples and bulk pricing — our technical team is ready to support your formulation development.