Description

Sodium n-Octadecyl Sulfate CAS NO 1120-04-3 is a high-purity, long-chain anionic surfactant derived from stearyl alcohol. This compound is valued for its excellent emulsifying, dispersing, and wetting properties, making it a critical performance additive in demanding formulations. It is primarily sought after by manufacturers in the personal care, textile processing, and specialty chemical industries for its reliable and consistent quality.

Application

• Personal Care & Cosmetics: Acts as a primary emulsifier and cleansing agent in high-viscosity creams, lotions, and shampoos, providing stable emulsions and a rich lather.
• Textile Processing: Used as a wetting agent, leveling agent, and emulsifier in dyeing and finishing baths to ensure uniform color application and fiber treatment.
• Industrial Emulsions: Serves as a key emulsifier in the production of polymer emulsions, wax emulsions, and polishes, ensuring particle stability and smooth application.
• Agricultural Formulations: Employed as a dispersant and spreading agent in pesticide and herbicide formulations to enhance coverage and efficacy on plant surfaces.
• Leather Processing: Functions as a fatliquoring agent and emulsifier in leather tanning and finishing to improve softness and dye penetration.
• Research & Development: Utilized as a standard or reagent in scientific research for studying surfactant properties, micelle formation, and interfacial phenomena.

Basic Information

Product Name	Sodium n-Octadecyl Sulfate
CAS No.	1120-04-3
Molecular Formula	C₁₈H₃₇NaO₄S
Molecular Weight	372.53 g/mol
Synonyms	Sodium Stearyl Sulfate; Sodium Octadecyl Sulfate; n-Octadecyl Sodium Sulfate; Stearyl Alcohol Sulfate Sodium Salt; Sulfuric Acid, Monooctadecyl Ester, Sodium Salt; SDS (Stearyl); AS-18; Octadecyl Sodium Sulfate
EINECS	214-293-3

Quality Control

Our Sodium n-Octadecyl Sulfate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, composition, and performance. Certificates of Analysis (COA) documenting key parameters are available for every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white powder or flakes
Identification (IR)	Conforms
Assay (by Titration)	≥ 95.0 %
pH (1% Solution)	6.0 - 9.0
Loss on Drying	≤ 5.0 %
Sulfate (as SO₄)	≤ 2.0 %
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.