Description

Sodium Steareth-4 Phosphate is an anionic surfactant derived from stearyl alcohol ethoxylate. This compound is valued for its excellent emulsifying, cleansing, and mildness properties, making it a versatile ingredient in demanding formulations. It is primarily used by manufacturers in the personal care, cosmetics, and industrial cleaning sectors who require stable, high-performance surfactants.

Application

• Primary Emulsifier in creams, lotions, and other oil-in-water (O/W) cosmetic emulsions.
• Cleansing Agent in facial cleansers, shower gels, and shampoos, prized for its mildness on skin and hair.
• Foam Booster & Stabilizer in liquid soaps and syndet bars to enhance lather quality and volume.
• Industrial & Institutional (I&I) Cleaners for formulating hard surface and textile cleaning products.
• Co-emulsifier in sunscreen and color cosmetic formulations to improve stability and spreadability.
• Base for Sulfate-Free Formulations, serving as a key surfactant in mild, modern cleansing systems.

Basic Information

Product Name	Sodium Steareth-4 Phosphate
CAS No.	57829-61-5
Molecular Formula	C22H46NaO7P
Molecular Weight	476.56 g/mol
Synonyms	Sodium POE(4) stearyl ether phosphate; Poly(oxy-1,2-ethanediyl), α-phosphono-ω-(octadecyloxy)-, sodium salt (4 EO); Steareth-4 Phosphate, Sodium Salt; Sodium Steareth-4 Phosphate (CTFA); PEG-4 Stearyl Ether Phosphate, Sodium Salt; Sodium Polyoxyethylene(4) Stearyl Ether Phosphate; Anionic Surfactant SPP-4
EINECS	Contact for details

Quality Control

Our Sodium Steareth-4 Phosphate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) are provided with every shipment to guarantee traceability and compliance with relevant industry standards.

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, which may affect product performance.

Specification

Item	Specification
Appearance	White to off-white paste or solid
Identification (IR)	Conforms
Assay (as active matter)	Min. 95.0%
pH (10% solution)	6.0 - 8.0
Water Content	Max. 3.0%
Heavy Metals (as Pb)	Max. 10 ppm
Residual Phosphate (as P2O5)	Max. 1.5%

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