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MPEG-200
Jienuo
Product Advantage
Exceptional Solubility & Compatibility
MPEG-200 dissolves easily in water, ethanol, and organic solvents (no precipitation), while its neutral pH (5.0-7.0) ensures compatibility with most formulations—ideal for mixing with surfactants, polymers, or cosmetic ingredients without causing instability.
Controlled Hydroxyl Value for Precision Reactions
With a strictly controlled hydroxyl value range (255-312 mgKOH/g), it enables consistent reactivity in synthesis (e.g., with acrylic acid), ensuring batch-to-batch stability for downstream products like polycarboxylate superplasticizers.
Low Viscosity & Easy Handling
As a low-molecular-weight (≈200) transparent liquid, MPEG-200 flows smoothly, reducing pumping/processing effort in production lines. Its liquid form also simplifies dosage adjustment compared to solid MPEG grades.
Thermal Stability for Wide Processing Conditions
It maintains structural stability under high temperatures (no decomposition), making it suitable for heat-intensive processes (e.g., coating curing, polymer polymerization) without losing performance.
Technical Specifications
Technical Parameter | Specification (MPEG-200) |
Chemical Name | Polyethylene Glycol Monomethyl Ether 200 |
CAS Number | 9004-74-4 |
Chemical Composition | Methyl ether-ethylene oxide polymer |
Type | Non-ionic |
Appearance (25°C) | Colorless to light yellow transparent liquid |
Molecular Weight (Average) | ~200 |
pH Value (1% aqueous solution) | 5.0 - 7.0 (neutral) |
Hydroxyl Value | 255 - 312 mgKOH/g (strictly controlled for reaction consistency) |
Water Solubility | Fully soluble in water (no precipitation at 20 - 40°C) |
Organic Solvent Compatibility | Soluble in ethanol, acetone, and most polar organic solvents |
Viscosity (25°C) | ≤ 50 mPa·s (low viscosity for easy handling) |
Moisture Content | ≤ 0.5% (max, to avoid formulation instability) |
Ash Content | ≤ 0.1% (high purity, minimal impurities) |
Thermal Stability | Stable at ≤ 120°C (no decomposition under typical processing temperatures) |
Flash Point | ≥ 150°C (safe for industrial storage/handling) |
Grade Options | Industrial Grade, Cosmetic Grade, Pharmaceutical Grade |
Shelf Life (Sealed) | 3 years (when stored in dry, ventilated conditions) |
Product Uses
Surfactant & Detergent Additive
MPEG-200 acts as a non-ionic surfactant in metalworking fluids, enhancing cleaning power and emulsification. It's also added to detergents to boost dispersion of dirt particles in water.
Cosmetic Formulation Ingredient
Its mildness and moisturizing properties make it a thickener/consistency regulator in lotions, creams, and toothpaste—improving product texture and spreading ability.
Polymer Synthesis Raw Material
It reacts with acrylic acid to produce MPEG methacrylate, a core monomer for polycarboxylate superplasticizers (used to enhance concrete workability and strength).
For general blending: Add MPEG-200 directly to formulations (e.g., detergents, cosmetics) under stirring (20-40°C) until fully dissolved. For synthesis (e.g., superplasticizer production): Use it in a 1:1 molar ratio with acrylic acid, reacting at 80-90°C with a catalyst (e.g., hydroquinone) to ensure complete polymerization. Store in a dry, ventilated area (shelf life: 3 years).
FAQ
What's the shelf life of MPEG-200?
It has a 3-year shelf life when stored in sealed, dry, and ventilated conditions (avoid direct sunlight and moisture). Unsealed containers should be used within 6 months to prevent contamination.
Is MPEG-200 safe for cosmetic use?
Yes—its neutral pH and mild nature meet cosmetic-grade standards, making it suitable for skincare and personal care products (no irritation risk in typical concentrations).
Can MPEG-200 replace solid MPEG grades?
It's ideal for liquid formulations (e.g., detergents, lotions) due to its liquid form, but solid MPEG (e.g., MPEG-1000) is better for solid products (e.g., tablets).
