Sodium lauryl sarcosinate

Sodium lauryl sarcosinate (CAS 7631-98-3), also known as sodium lauroyl sarcosinate, is a mild amino acid-derived anionic surfactant.

Where is Sodium lauryl sarcosinate used?

• Personal care: primary or co-surfactant in shampoos, facial cleansers, toothpastes and shaving foams
• Home care and industrial cleaning: foam stability and soil removal in liquid detergents
• Hard surface cleaners and degreasers
• Textile and leather processing: wetting and scouring agent for even penetration of treatment baths
• Paper manufacturing: fiber dispersion and surface treatment
• It delivers foaming, cleansing and emulsification while being gentler on skin than conventional sulfate surfactants.
• Used for solubilization and separation of membrane proteins and glycoproteins.
• Useful in concentrated salt solutions used during the cell lysis step in RNA purification, helping to prevent excessive foaming.

Good to know: Considered gentler on skin than conventional sulfate surfactants; its low irritation profile supports sulfate-free positioning.

Formulation notes

• Typical use levels are 1-5% on an active basis.
• Formulate at pH above 5.7 to avoid turbidity or opacity.
• Incorporated in the aqueous phase with gentle agitation to avoid excessive aeration.
• Compatible with quaternary ammonium germicides and cationic conditioning agents.
• Compatible with most surfactants, including cationic surfactants and surfactants with high conditioning properties.

Typical specification

• Active matter content is 28.5–31.5%.
• The pH of a 10% solution is 7.5 to 8.5.
• Good chlorine stability with corrosion inhibiting properties.
• Better sebum resistance than sodium lauryl sulfate, AOS, SLES, etc.

Regulatory status

• INCI name: Sodium Lauroyl Sarcosinate.

Storage, packaging and handling

• Store in well-closed containers, in the shade, at temperatures below 40°C.

Frequently asked questions about Sodium lauryl sarcosinate

In which applications is sodium lauryl sarcosinate compatible with quaternary ammonium germicides?

It is used in medicated hygiene products compatible with quaternary ammonium germicides.

How can viscosity be built in formulations containing this surfactant?

Its high electrolyte tolerance allows viscosity to be built with sodium chloride without compromising formula stability.

Can it be used in oral care products such as mouthwashes?

It can be used in mouthwashes due to its antimicrobial properties.

Technical content is compiled and updated by the SoleChem product team from public technical sources; the certificate of analysis (COA) governs product-specific specifications.