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Low Viscosity MPEG-550 Polyethylene Glycol Monomethyl Ether – High Solubility & Compatibility(CAS 9004-74-4)

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Industrial Grade MPEG-500 Polymer - Polyethylene Glycol Monomethyl Ether for Adhesive & Pharmaceutical

Name: Industrial Grade MPEG-500 Polymer - Polyethylene Glycol Monomethyl Ether for Adhesive & Pharmaceutical
Brand: Jienuo
Rating: 5.0 (47 reviews)

MPEG-500 (CAS 9004-74-4) is a nonionic surfactant in the MPEG series, with a molecular weight of 450-550, pH 5.0-7.0 (1% aqueous solution), and hydroxyl value 105-125 mgKOH/g. It is a colorless to pale yellow viscous liquid, featuring excellent water solubility, low toxicity, and thermal stability. As a versatile industrial intermediate, it serves as a key raw material in multiple sectors like construction and cosmetics.

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Model:
MPEG-500
Brand:
Jienuo

Product Description

Polyethylene Glycol Monomethyl Ether (MPEG-500)- Product Overview

Polyethylene Glycol Monomethyl Ether MPEG-500 (CAS 9004-74-4) is a nonionic surfactant with a molecular weight range of 450-550. It features excellent water solubility, low toxicity, and good compatibility with various organic/inorganic substances. As a key derivative of polyethylene glycol, MPEG-500 offers superior emulsifying, dispersing, and wetting properties. Widely used in industrial, pharmaceutical, and cosmetic fields, it acts as a raw material for surfactants, coating additives, adhesive modifiers, and pharmaceutical excipients. Its stable chemical structure ensures reliable performance under diverse processing conditions, while its non-irritating characteristics make it suitable for high-demand applications. High-purity MPEG-500 is supplied as a colorless to pale yellow liquid, meeting strict industrial and pharmaceutical quality standards.

Product Advantage

Precise Technical Specifications
MPEG-500 maintains strict quality control: its hydroxyl value (105-125 mgKOH/g) and molecular weight (450-550) ensure consistent reactivity, critical for downstream synthesis (e.g., superplasticizers). Our production line achieves 99.5% purity, meeting industrial/pharmaceutical grade standards (APHA color ≤30), reducing batch-to-batch variation.
Excellent Compatibility & Stability
As a nonionic surfactant, it blends seamlessly with organic/inorganic materials without ionic interference. It resists thermal degradation (stable at <150°C) and has low volatility (vapor pressure <0.1 mmHg at 25°C), ensuring reliable performance in high-temperature processing (e.g., coating curing).
Multifunctional Performance
Beyond emulsifying and dispersing, MPEG-500 acts as a lubricant and viscosity regulator. Its linear structure (CH₃(OCH₂CH₂)ₙOH) provides controlled hydrophilic-lipophilic balance (HLB ~12), making it suitable for both water-based (e.g., cosmetics) and solvent-based (e.g., adhesives) formulations.
Cost-Effective Industrial Scalability
We supply 200kg/250kg drum packaging (or 20kg cartons for solid grades), with a 2-year shelf life under normal storage. Our monthly production capacity of 500 tons ensures on-time delivery, while bulk pricing supports large-scale applications (e.g., concrete admixture manufacturing).

Technical Specifications

Technical Parameter	Specification (MPEG-500)
Chemical Name	Polyethylene Glycol Monomethyl Ether
CAS Number	9004-74-4
Type	Nonionic Surfactant
Molecular Formula	CH₃(OCH₂CH₂)<sub>n</sub>OH (n≈10-11)
Molecular Weight (Mn)	450–550
Appearance (25°C)	Colorless to pale yellow viscous liquid
pH Value (1% Aqueous Solution, 25°C)	5.0–7.0
Hydroxyl Value (mgKOH/g)	105–125
Water Content (wt%)	≤0.5%
Purity (wt%)	≥99.5%
APHA Color (Hazen)	≤30
Viscosity (25°C, mPa·s)	100–150
Density (25°C, g/cm³)	1.08–1.12
Flash Point (°C)	≥200
Thermal Stability	Stable at ≤150°C (no decomposition)
Solubility (25°C)	Miscible with water, ethanol, and most organic solvents

Product Uses

Construction Superplasticizers
MPEG-500 reacts with methacrylic acid to produce MPEG methyl methacrylate, a core monomer for polycarboxylate superplasticizers. These additives enhance concrete workability (slump retention >2 hours) and strength (28-day compressive strength +20%), widely used in high-performance concrete for infrastructure projects.
Cosmetics & Personal Care
It functions as a humectant and viscosity regulator in skincare products (e.g., lotions, creams). Its low irritation (LD₅₀ >5000 mg/kg in rats) complies with EU Cosmetics Regulation (EC 1223/2009), keeping formulations smooth and improving skin hydration by 15-20%.
Industrial Adhesives & Coatings
As an additive, MPEG-500 improves adhesive wet-tack strength (by 10-15%) and coating dispersion stability. It is compatible with acrylic, epoxy, and polyurethane systems, reducing surface defects (e.g., orange peel) in industrial coatings for metal/plastic substrates.

Product Operate Guide

For general applications: Add MPEG-500 directly to formulations (5-15% by weight, adjusted by use case) under stirring (500-800 rpm) at 25-40°C. For superplasticizer synthesis: Mix with methacrylic acid (molar ratio 1:1) at 80-90°C, catalyzed by sulfuric acid (1% by weight), reacting for 4-6 hours until esterification rate >95%. Store unused material in sealed containers at 5-30°C, away from direct sunlight.

FAQ

What is MPEG-500's shelf life?
Under proper storage (sealed, cool, dry), MPEG-500 remains stable for 2 years. After opening, use it within 6 months and reseal to avoid moisture absorption, which may slightly increase viscosity but does not affect performance.
Is MPEG-500 food-contact safe?
Our food-grade MPEG-500 complies with FDA 21 CFR 172.820, suitable for food packaging adhesives. Industrial-grade variants are not intended for direct food contact—confirm the grade before use.
Can MPEG-500 replace MPEG-400/MPEG-600?
It can substitute in some applications, but note: MPEG-500 has higher molecular weight than MPEG-400 (slower solubility) and lower than MPEG-600 (less viscosity). Test compatibility in small batches first for critical formulations.