Laureth-4(Polyoxyethylene (4) Lauryl Ether)-CAS 68439-50-9
Laureth-4, chemically named Polyoxyethylene (4) Lauryl Ether
CAS No. 68439-50-9
Our cosmetic-grade Laureth-4 adopts high-precision polymerization and purification technology, with effective content ≥99.0%.
The product appears as colorless to pale yellow transparent oily liquid
It is slightly soluble in water, freely soluble in organic solvents and cosmetic oil-phase raw materials, with outstanding acid and alkali resistance, hard water resistance and low foaming properties.
The 1% aqueous solution pH value is 5.0–7.0, featuring stable physical and chemical properties.
The minimum order quantity is 1KG.
It is widely used in cosmetic emulsification, skin cleansing, hair care, sunscreen products and daily chemical formula preparation.
Laureth-4,Polyoxyethylene (4) Lauryl Ether
Laureth-4(Polyoxyethylene (4) Lauryl Ether)-CAS 68439-50-9
Laureth-4 is a high-performance mild non-ionic surfactant specially developed for cosmetic and daily chemical formulas. With low ethoxylation degree and lipophilic dominant characteristics, it is an ideal water-in-oil emulsifier and efficient wetting dispersant. Different from high-foam surfactants, it features low foam, strong permeability and excellent emulsifying stability, which can effectively solve the problems of oil-water stratification and poor powder dispersion in cosmetic formulas. It has ultra-mild skin affinity, no irritation to skin and scalp, and will not cause tight and dry feeling after use. With stable performance in complex formula systems, it can optimize product texture and improve formula uniformity and durability, being an essential multifunctional auxiliary raw material in high-quality daily chemical products.
Key Benefits
• Excellent Lipophilic Emulsification: HLB 9–10, ideal for water-in-oil emulsion systems, stably emulsifies various grease and oil-phase raw materials to prevent formula stratification.
• Strong Wetting & Permeability: Outstanding surface activity reduces formula surface tension, enhances ingredient penetration and uniform attachment on skin and hair.
• Low-Foam & High Stability: Features low foam and fast defoaming performance, stable in acid, alkali and hard water environments, no efficacy attenuation.
• Mild & Low-Irritation: Non-ionic surfactant structure with low sensitization, no dry and tight residue, suitable for long-term daily care formula use.
• Super Powder Dispersion: Uniformly disperses cosmetic pigment powder and sunscreen particles, prevents agglomeration and improves product fineness.
• Wide Formula Compatibility: Compatible with anionic, cationic and non-ionic raw materials, flexible formula adjustment and easy industrial production.
Applications
• Water-in-Oil Skincare Products: Widely used in moisturizing cream, skin lotion and barrier repair cream to stabilize emulsion system and lock skin moisture.
• Sunscreen & Isolation Formulas: Serves as dispersant and emulsifier for physical sunscreen particles to improve product uniformity and sunscreen efficacy.
• Mild Cleaning Products: Applied in facial cleanser and body wash to assist decontamination with low foam and mild cleansing effect.
• Professional Hair Care Products: Added in hair conditioner and hair mask to smooth hair cuticles, improve wet combing and reduce dry frizz.
• Color Cosmetic Formulas: Used in foundation, cream cosmetics and powder products to disperse pigments and optimize product texture.
Certificate Of Analysis (COA)
Test Item | Standard Specification | Test Result | Test Method |
Product Name | Laureth-4 (Polyoxyethylene-4 Lauryl Ether) | Compliant | Visual Verification |
CAS No. | 68439-50-9 | Compliant | Document Verification |
Appearance | Colorless to Pale Yellow Transparent Oily Liquid, Odorless | Compliant | Visual & Olfactory Inspection |
Effective Content | ≥99.0% | 99.56% | High Performance Liquid Chromatography |
HLB Value | 9.0–10.0 | 9.6 | Calculation Method |
pH Value (1% Aqueous Solution) | 5.0–7.0 | 6.12 | pH Meter Method |
Moisture Content | ≤0.1% | 0.03% | Karl Fischer Method |
Acid Value | ≤0.5 mg/g | 0.18 mg/g | Titration Method |
Heavy Metal (Pb) | ≤10ppm | <5ppm | Atomic Absorption Spectrometry |
Conclusion | Conforms to Global Cosmetic Grade Standards | Qualified | Comprehensive Detection |
Frequently Asked Questions (FAQ)
• Q1: What global cosmetic safety standards does Laureth-4 meet? A1: It complies with EU SCCS, US FDA and China NMPA cosmetic-grade regulations for global compliant trading.
• Q2: What is the MOQ and bulk delivery capacity? A2: MOQ is 1KG, sufficient spot stock supports bulk orders and fast global delivery.
• Q3: What formula systems is cosmetic-grade Laureth-4 suitable for? A3: Ideal for W/O emulsions, sunscreen, cleaning, hair care and color cosmetic formulas.
• Q4: What are the standard storage conditions and shelf life? A4: Sealed and stored in cool dry dark place, with a 24-month shelf life.
• Q5: Can you provide complete export certification documents? A5: Full set of COA, MSDS and customs clearance documents are available.
• Q6: What is the recommended formula addition dosage? A6: Conventional addition ratio is 0.5%-5.0%, adjustable per different cosmetic formulas.
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