Sodium Lauryl Sulfate (Fine Powder, Oral Grade) is a high-purity anionic surfactant (SLS) supplied as a very fine, free-flowing powder for oral-care and premium personal-care manufacturing.
This oral-grade specification is typically controlled for sensory-relevant impurities (off-odor, unsulfated matter, inorganic salts) and color, helping formulators achieve clean taste/odor, smooth texture, and consistent appearance in toothpaste and other consumer-facing products.
With active matter ≥95% (per COA) and a fine particle profile, it disperses and dissolves faster than noodle/flake grades, supporting uniform micellization, fast wetting, and predictable foaming in both dry blends and aqueous processing.
Product Description: Sodium Lauryl Sulfate is a classic high-foam, high-wetting anionic surfactant. In water it lowers surface tension and forms micelles that solubilize soils and support rinse-off cleansing. The very fine powder form is particularly useful for toothpaste and dry premixes because it blends uniformly and hydrates quickly, reducing undissolved specks and shortening mix time compared with coarser particles.
- Oral-care processing notes: add gradually to reduce sudden foaming; for dry blends, premix into abrasives/sweeteners/binders for uniform dosing; for toothpaste bases, incorporate after humectants and binder hydration, then deaerate as needed.
- Compatibility: as an anionic surfactant, SLS can form complexes/precipitates with strongly cationic materials (e.g., cationic conditioners, quats); evaluate in systems with high electrolyte load and avoid combining with cationic actives unless specifically designed.
- Quality targets (typical COA-style): Active matter (MW 295) ≥95.0%; Unsulfated organic matter ≤3.0%; Inorganic sulfates ≤2.0%; Color (APHA, 10% aq.) ≤50; pH (1% aq.) 7.5–10.5; Water ≤4.0%.
Usage: Toothpaste and gel toothpaste; toothpowder/dry blends; oral-care powders/tablets (where permitted); foaming cleansers, shampoos, and liquid soap systems requiring strong detergency and fast wetting.
Mixing method:
- Aqueous systems: dissolve into the water phase under moderate agitation. Add slowly to minimize foam; allow full hydration before adding high-electrolyte components.
- Toothpaste bases: pre-wet with a portion of humectant (e.g., glycerin/sorbitol) or premix into the dry phase, then incorporate into the main batch after binder hydration; mix until fully uniform and deaerate.
- Dry blends: premix with compatible powders (abrasives, sweeteners, salts) for even distribution; control dust with standard powder-handling practices.
Usage rate: 0.5–15% (as supplied), depending on product type. Oral-care toothpaste is commonly ~0.5–2% (as supplied), which delivers ~0.48–1.9% active when active matter is ≥95%.
Product characteristics: White to light-yellow, very fine free-flowing powder.
Solubility: Soluble in water; forms clear to slightly opalescent solutions depending on concentration and electrolyte load. Compatible with typical humectants; high salt levels may reduce solubility (salting-out).
