Product: Sodium Laureth Sulfate (SLES)
Rchem Sodium Laureth Sulfate (SLES) is a high-purity, anionic surfactant supplied as a clear, colorless to pale yellow, viscous liquid or paste. This widely used and highly effective detergent is produced by the ethoxylation of lauryl alcohol followed by sulfation and neutralization with sodium hydroxide. Renowned for its excellent foaming properties, superior cleansing ability, and good mildness profile (compared to traditional SLS), it is a cornerstone ingredient in the personal care, household, and industrial cleaning industries for producing rich, stable lather in shampoos, body washes, liquid soaps, and laundry detergents.
Category: powder
Description
Key Features & Benefits:
● Excellent natural thickening agent with high viscosity at low concentrations
● Effective stabilizer for emulsions and suspensions in various formulations
● Clean-label ingredient suitable for organic and natural product formulations
● Improves texture and shelf life in food products
● Enhances viscosity and stability in cosmetic formulations
● Cost-effective alternative to synthetic thickeners and stabilizers
Technical Specifications Table:
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Product Origin
PALM DERIVATIVES STATUS
VEGAN SUITABLE
Chemical Formulae
Frequently Asked Questions:
What is the primary difference between Sodium Laureth Sulfate (SLES) and Sodium Lauryl Sulfate (SLS)?
The key difference is mildness and molecular size. SLES is ethoxylated (has ethylene oxide groups added), which makes the molecule larger, reduces its ability to penetrate the skin, and significantly reduces its irritation potential. SLS is not ethoxylated, has a smaller molecular size, penetrates the skin more readily, and is known to be more irritating and drying. For this reason, SLES is preferred in skin and hair care products where daily use and mildness are important, while SLS is more common in heavy-duty cleaning and industrial applications.
Yes, SLES has been extensively studied and is considered safe for use in rinse-off personal care products at typical concentrations (5-15% active matter) by regulatory bodies worldwide, including the FDA, EU Scientific Committee on Consumer Safety (SCCS), and others. However, it is a detergent and can be drying or irritating to sensitive individuals if used in high concentrations or left on skin. For sensitive skin formulations, it is often combined with mild co-surfactants like Cocamidopropyl Betaine to further reduce irritation potential.
Is SLES safe for use in personal care products?
1,4-dioxane is a potential byproduct formed during the ethoxylation process used to manufacture SLES. It is classified as a possible human carcinogen. Reputable manufacturers (including Rchem's suppliers) use vacuum stripping or other purification processes to remove 1,4-dioxane to very low, trace levels (typically less than 5-10 ppm). Rchem sources SLES from manufacturers that adhere to strict quality standards and safety regulations. Consumers with concerns can look for "1,4-dioxane-free" or "certified clean" labels.
What is the concern about 1,4-dioxane in SLES, and how is it addressed?
SLES 70% (the paste grade) may appear white and pasty at room temperature due to partial crystallization. This is normal and does not indicate product degradation. To clarify: (1) Gently warm the container in a warm water bath (40-50°C / 104-122°F) until the product becomes clear and fluid; (2) Stir or agitate to ensure uniformity before use; (3) Do not overheat (avoid temperatures above 60°C / 140°F). Once clarified, the product may re-solidify upon cooling, simply re-warm before use. The 27% liquid grade typically remains liquid and clear.
Why does SLES sometimes have a cloudy appearance, and how can it be clarified?
Handling: SLES is a viscous liquid/paste. Use appropriate personal protective equipment (PPE) including gloves, safety goggles, and protective clothing. In case of skin contact, wash thoroughly with water. For the 70% paste grade, gentle warming may be required for easy pumping and dispensing. Formulation: SLES is typically added to the water phase with gentle heating (40-45°C) to aid dissolution. It is compatible with most anionic, amphoteric, and non-ionic surfactants. Viscosity can be increased by adding sodium chloride (salt) slowly with gentle mixing. Final product pH should be adjusted to 5.0-6.0 for skin compatibility. Always refer to the Safety Data Sheet (SDS) for comprehensive handling, safety, and first-aid information.
