Polypropylene glycol monomethyl ether MPPG
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Category：Paint chemicals Own Brand：MT /MOQ:100KG /From China/ B2B only.
Introduction
Polypropylene Glycol Monomethyl Ether (MPPG): Overview and Key Properties
| Category | Details |
|---|---|
| Chemical Name | Polypropylene glycol monomethyl ether (MPPG) |
| CAS Number | 9003-13-8 (varies by molecular weight) |
| Molecular Formula | CH₃O[CH₂CH(CH₃)O]ₙH |
| Appearance | Colorless to pale yellow liquid |
| Odor | Mild, characteristic |
Physical & Chemical Properties
| Property | Typical Value |
|---|---|
| Molecular Weight | 300–2.000 g/mol (n=5–30) |
| Density (20°C) | 0.95–1.02 g/cm³ |
| Viscosity (25°C) | 50–500 mPa·s |
| Boiling Point | 150–300°C (depends on MW) |
| Flash Point | 80–150°C |
| Solubility | Water-miscible (low MW); soluble in organic solvents |
Key Performance Features
| Feature | Advantage |
|---|---|
| Low Toxicity | Safer alternative to glycol ethers |
| Hydrophilicity | Effective coupling agent |
| Thermal Stability | Stable to 200°C |
Manufacturing Process
| Step | Description |
|---|---|
| Alkoxylation | Propylene oxide + methanol (base catalyst) |
| Purification | Neutralization, distillation |
Applications
| Industry | Function |
|---|---|
| Coatings | Solvent, flow aid |
| Inks | Pigment dispersant |
| Cleaning | Degreasing agent |
| Pharmaceuticals | Excipient |
| Electronics | Flux cleaner |
Comparison with Similar Glycol Ethers
| Property | MPPG | Ethylene Glycol Ethers |
|---|---|---|
| Toxicity | Lower | Higher |
| Biodegradability | Better | Moderate |
| Hydrophilicity | Adjustable (via MW) | Fixed |
Safety & Handling
| Parameter | Specification |
|---|---|
| LD50 (Oral) | >2.000 mg/kg |
| Skin Irritation | Mild |
| Storage | Keep sealed, avoid moisture |
Market Data
| Application | Market Share |
|---|---|
| Coatings | 45% |
| Industrial Cleaners | 30% |
| Others | 25% |
Regulatory Status
| Region | Compliance |
|---|---|
| US EPA | VOC-exempt (certain grades) |
| EU | REACH registered |
| Japan | MITI approved |
Key Advantages and Limitations
| Advantages | Limitations |
|---|---|
| Tunable hydrophilicity | Higher cost than standard solvents |
| Low environmental impact | Limited high-temperature stability |
| Broad compatibility | Viscosity increases with MW |
Summary
MPPG serves as a versatile, low-toxicity glycol ether with adjustable properties for coatings, cleaning, and pharmaceutical applications. Its molecular weight variability enables tailored performance across industries.
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