STEOL® CS-330 is a low-active, 3-mole sodium laureth sulfate known for its excellent skin compatibility, foam, and viscosity characteristics. This anionic surfactant finds a wide array of applications, ranging from personal care products like shampoos, body washes, and liquid hand washes to household cleaning products like dishwashing liquids, laundry detergents, and car wash solutions. It also has roles in agricultural applications and textile processing as a scouring, leveling, coupling, and foaming agent.

INCI Name: Sodium Laureth Sulfate

Functions: Foam Booster, Foaming Agent, Scouring Agent, Surfactant, Surfactant (Anionic)

Certifications & Compliance: Kosher, RSPO MassBalance Certified

Synonyms: Poly(oxy-1,2-ethanediyl), α-sulfo-ω-hydroxy-, C12-14-alkyl ethers, sodium salts

Knowde Enhanced TDS

Identification & Functionality

Cleaning Ingredients Functions
Cosmetic Ingredients Functions
CAS No.
68891-38-3
EC No.
500-234-8
Chemical Structure

CH3 (CH2)10 CH2 (OCH2 CH2)3 OSO3 Na

Preservative

Formaldehyde

Features & Benefits

Biodegradability

Product is readily biodegradable.

Applications & Uses

Application Format
Bath & Shower Applications
Hair Care Applications
Industrial Additives End Use
Personal Hygiene Applications
Skin Care Applications
Applications
  • STEOL CS-330 is a sodium lauryl ether sulfate derived from fatty alcohols, ethoxylated to an average of 3 moles, and sulfated via Stepan's continuous SO₃ process.
  • STEOL CS-330 is not only milder than sodium lauryl, 1 mole or 2 mole laureth sulfates but also exhibits greater salt tolerance and solubilizing properties. Its low irritation properties make it useful for mild cleansing products, as well as baby products.
  • STEOL CS-330 offers excellent skin compatibility, along with good foam and viscosity characteristics, all important considerations in shampoo, hand soap, and bath product formulations. STEOL CS-330 based products can be readily thickened with salts, betaines, and amides, with the latter two also offering foam enrichment. By modifying the additive levels, formulas exhibiting a variety of performance and physical attributes can be developed. Since STEOL CS-330 is compatible with commonly used opacifiers and pearlizing agents, the formulator is afforded flexibility in developing the desired product appearance.

Properties

Physical Form
Appearance
Clear, yellow liquid (at 25°C)
Typical Properties
ValueUnitsTest Method / Conditions
Cloud Point2°C
Actives Content (MW 422)28%
Unsulfated Material0.45%
Critical Micelle Concentration (CMC)449mg/L
Sodium Sulfate Content0.16%
pH (10% in aqueous solution)7.5
Color (Transmittance at 420 nm)94%
Density (at 25°C)1.03g/ml
Pour Point1°C
Sodium Chloride Content0.03%
Viscosity (at 25°C)62cPs
Viscosity (at 60 °C)30cPs
Freeze Point-2°C
Flash Pointmin. 94°CPMCC Flash Point Tester
Regulated Volatile Organic Chemicals0%U.S. EPA

Regulatory & Compliance

Certifications & Compliance
Clearances

STEOL CS-330 is approved for use as inert ingredient under U.S. EPA 40 CFR 180.910.

Safety & Health

Health Effects

STEOL CS-330 is practically non-toxic orally (LD₅₀ is >5 g/kg) and causes mild to moderate skin and moderate eye irritation at 10% active.

Packaging & Availability

Packaging Type
Standard Packaging

STEOL CS-330 is available in bulk and 55-gallon drums.

Storage & Handling

Storage & Handling
  • Normal safety precautions (i.e., gloves and safety goggles) should be employed when handling STEOL CS-330. Contact with the eyes and prolonged contact with the skin should be avoided. Wash thoroughly after handling material.
  • It is recommended that STEOL CS-330 be stored in sealed containers and kept at temperatures above 45°F (7°C). Avoid overheating or freezing. If material is frozen, mild heat and agitation are recommended to ensure the material is homogeneous before use.
  • Bulk Storage Information: Tanks made of 316 stainless steel or fiberglass with an Atlac 382 corrosion liner are recommended. Positive displacement gear pumps and piping should be 316 stainless steel. Recommended storage for bulk tanks is 90-100°F (32-38°C).