Polyethylene glycol PEG-600 (CAS No.: 25322-68-3) is a nonionic high molecular weight compound produced by Guoli Chemical. It appears as a colorless to slightly yellow transparent liquid or semi-solid (melting point 15~25°C), with a molecular weight range of 570~630 and an HLB value of up to 19. It has excellent water solubility, emulsifying, wetting, dispersing, and solubilizing capabilities. Before use, if the product is waxy solid due to low temperature, it can be gently warmed to liquid in an environment not exceeding 40°C, stirred evenly, and then directly added to the formula system. This product has good compatibility with acids, alkalis, and hard water, and has wide compatibility.
PEG-600 can be used flexibly in various ways: In the pharmaceutical field, it is usually melted and mixed with other matrix materials (such as PEG-400, PEG-4000, etc.) in proportion to make ointment bases or suppository bases; in personal care products, it can be directly added during the water phase heating stage, fully dissolved in water before participating in emulsification; in industrial fields (such as metalworking fluids, ceramic slurries, coatings, etc.), it is generally added slowly to the system as a functional additive under stirring to ensure uniform dispersion. Since the product is hygroscopic, it should be sealed promptly after opening to avoid absorbing moisture from the air and affecting weighing accuracy.
| Parameter Item | Specification Value |
|---|---|
| Appearance | Colorless to slightly yellow transparent liquid or semi-solid |
| Molecular Weight | 570~630 |
| Hydroxyl Value (mg KOH/g) | 178~196 |
| HLB Value | 19 |
| pH Value (1% Aqueous Solution) | 5.0~7.0 |
| Moisture Content | ≤1.0% |
| Density (g/cm³) | 1.11~1.13 |
| Melting Point | 15~25°C |
| Flash Point | ≥220°C |
| Active Content | ≥99% |
The recommended dosage for different application scenarios is as follows (data source: Guoli Chemical product database combined with industry application experience):
| Application Field | Purpose | Recommended Dosage (as percentage of total formula) |
|---|---|---|
| Pharmaceutical — Ointment/Suppository Base | Water-soluble drug carrier | 20%~50% (compounded with other PEGs) |
| Pharmaceutical — Dropping Pill Carrier | Solid dispersion matrix | 10%~30% |
| Personal Care — Humectant | Face creams, lotions, toners | 1%~5% |
| Personal Care — Fatting Agent in Detergents | Body washes, hand washes | 0.5%~3% |
| Metalworking Fluids | Lubricants, coolants | 3%~15% |
| Ceramic/Pigment Slurries | Dispersant | 0.2%~2% (based on solid content) |
| Rubber/Plastic Processing | Internal lubricant, mold release agent | 0.1%~1% |
| Coatings/Inks | Leveling agent | 0.5%~3% |
| Textiles — Antistatic Agent/Leveling Agent | Finishing liquor or dye bath | 0.5%~5% |
| Pesticide Formulations | Emulsifying dispersant, synergist penetrant | 3%~10% |