SLS

Sodium Lauryl Sulphate — Powder & Liquid Grade — Bulk supply across India & International Markets

What is SLS?

SLS (Sodium Lauryl Sulphate, also known as Sodium Dodecyl Sulphate or SDS) is a strong anionic surfactant valued for its powerful foaming and cleaning performance, available in both powder and liquid forms. Unlike its ethoxylated relative SLES, SLS does not have the ether linkage in its molecular structure, generally giving it stronger detergency and foam generation but a somewhat more aggressive profile, making careful consideration of the target application important when choosing between SLS and SLES.

Polychem Industries supplies SLS in powder grade and liquid grade to toothpaste manufacturers, detergent powder producers, and industrial cleaning product formulators across India and internationally. Its strong, reliable foaming and cleaning performance, combined with its well-established regulatory and safety history in approved applications, make it a foundational surfactant across oral care, detergent, and industrial cleaning product categories.

Available Grades

GradeFormPurityStandardApplications
Powder Grade (90%+)White to off-white powder/needles90–95% active (powder) / 28–30% active (liquid)Industrial / DetergentToothpaste, detergent powder, industrial cleaners, foam boosters
Liquid Grade (28-30%)Clear to pale yellow liquid28-30% activeIndustrial / DetergentLiquid detergents, foam baths, industrial cleaning liquids

Applications & Uses

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Toothpaste Formulations

One of the most significant applications. SLS is widely used in toothpaste formulations as a foaming agent, helping distribute active ingredients throughout the mouth during brushing and providing the foaming sensation consumers associate with effective cleaning.

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Detergent Powder Manufacturing

Used as a foam booster and co-surfactant in detergent powder formulations, contributing strong foam generation alongside primary surfactants like LABSA in the overall detergent formulation.

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Industrial & Institutional Cleaners

Used in industrial and institutional cleaning formulations requiring strong, reliable foaming and degreasing performance across various hard-surface and equipment cleaning applications.

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Foam Boosting in Liquid Formulations

Used as a foam booster in various liquid cleaning and personal care formulations where enhanced foam volume and stability is desired, often in combination with milder primary surfactants.

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Laboratory & Research Applications

Used extensively as a laboratory reagent in biochemistry and molecular biology research, including protein analysis techniques such as SDS-PAGE gel electrophoresis, due to its well-characterised protein-denaturing properties.

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Concrete & Construction Applications

Used in certain concrete admixture formulations as an air-entraining agent, contributing to specific performance characteristics in concrete and construction material applications.

Technical Specifications

SLS — Key Properties

Chemical FormulaCH3(CH2)10CH2OSO3Na
CAS Number151-21-3
Molecular Weight288.38 g/mol
AppearanceWhite to off-white powder/needles (powder grade); clear to pale yellow liquid (liquid grade)
Purity90–95% active (powder) / 28–30% active (liquid)
Active Matter90%+ (Powder Grade) / 28-30% (Liquid Grade)
Density / Bulk DensityBulk density: 0.4–0.5 g/cm3 (powder)
pH7.5 – 9.5 (10% solution)
Packaging Available25 kg bags (powder) / 200 L drums (liquid)
StorageStore in cool, dry place away from moisture. Hygroscopic — keep sealed to prevent caking. Shelf life 12 months.

Why Source SLS from Polychem Industries?

  • Powder Grade (90%+) and Liquid Grade (28-30%) available
  • Certificate of Analysis with confirmed active matter on every batch
  • Strong, reliable foaming and cleaning performance
  • Reliable bulk supply for toothpaste, detergent and industrial manufacturers
  • Competitive pricing with consistent year-round availability
  • Export documentation experience for international shipments

Frequently Asked Questions

What is the difference between SLS and SLES?
SLS (Sodium Lauryl Sulphate) lacks the ether/ethoxylate linkage present in SLES (Sodium Lauryl Ether Sulphate), giving SLS generally stronger raw detergency and foam generation but also a somewhat more aggressive profile with greater potential for skin and eye irritation compared to the milder, ethoxylated SLES. This is why SLES is more commonly used in personal care products like shampoo, while SLS finds more application in products like toothpaste and detergent powder where its stronger characteristics are appropriate.
Why is SLS used in laboratory research like SDS-PAGE?
SLS (referred to as SDS in laboratory contexts) has well-characterised protein-denaturing properties, uniformly coating proteins with a negative charge proportional to their molecular weight. This property makes it foundational to SDS-PAGE (a widely used protein separation technique in biochemistry and molecular biology), where it enables proteins to be separated and analysed based on size during gel electrophoresis.
Is SLS safe to use in toothpaste and personal care products?
Yes — SLS has an extensive history of safe use in toothpaste and various personal care products globally, within appropriate formulation guidelines and at typical use levels for these approved product categories, despite some consumer concern in popular media. It remains a standard, well-regulated ingredient choice in many leading toothpaste brands worldwide.
Do you export SLS outside India?
Yes. We export to Bangladesh, Sri Lanka, Nepal, Bhutan, and South Africa with full export documentation. Contact us for export pricing and lead times.

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