Polypropylene Glycol PPG-200 is a low-toxicity, non-ionic high-molecular polymer, characterized by excellent emulsifying dispersibility, broad chemical compatibility, and superior wetting and solubilizing capabilities. It is an important basic raw material in fields such as lubricants, defoamers, polyurethane, and surfactants.
Detailed Description
Polypropylene Glycol PPG-200 (CAS: 25322-69-4) appears as a colorless to slightly yellow transparent viscous liquid, belonging to non-ionic high-molecular polymers. Its molecular structure endows it with unique interfacial activity, effectively reducing the interfacial tension of the system, playing a key role in wetting, emulsification, and solubilization in various industrial formulations.
PPG-200 exhibits excellent chemical stability, with high tolerance to acids, alkalis, and hard water environments, making it resistant to hydrolysis or precipitation under complex chemical conditions. Meanwhile, its flash point is greater than 150°C, with low volatility and low toxicity; the acute oral toxicity LD50 is greater than 2000 mg/kg, making it relatively friendly to equipment and the operating environment during processing and use, and it is not classified as a dangerous good.
As a versatile chemical intermediate, PPG-200 demonstrates strong versatility in downstream applications: it can be used alone as a functional component (e.g., lubricant base oil, mold release agent, defoamer), or as a synthetic raw material to further derive non-ionic surfactants, dispersants, and emulsifiers, covering applications from polyurethane flexible foam production to daily cosmetics and other fields.
Technical Parameters
| Parameter Item | Parameter Value |
|---|
| Product Name | Polypropylene Glycol PPG-200 |
| Chemical Name | Polyoxypropylene Diol |
| CAS No. | 25322-69-4 |
| Appearance | Colorless to slightly yellow transparent viscous liquid |
| Type | Non-ionic high-molecular polymer |
| Flash Point (Closed Cup) | > 150 °C |
| Toxicity Classification | Low toxicity, non-hazardous |
| Acute Toxicity (LD50, Oral, Rat) | > 2 000 mg/kg |
| GHS Classification | Not classified as hazardous substance; may cause eye irritation (H319) |
| Recommended Storage Temperature | 5–35 °C |
| Recommended Shelf Life | Not exceeding 24 months from the date of manufacture |
Application Suggestions
The application fields of PPG-200 are extensive and mature, primarily covering the following directions:
- Synthetic Lubricant Base Oil: Used in formulating high-temperature chain oils, compressor oils, and gear oils, providing the finished product with excellent viscosity-temperature properties and oxidation stability.
- Hydraulic Fluids: As a key component of fire-resistant hydraulic fluids, providing good lubricity and anti-wear protection, suitable for hydraulic systems near high temperatures or flames.
- Mold Release Agents: Forming a uniform release film in polyurethane foam, rubber, and plastic processing, improving release effect and reducing mold fouling.
- Defoamer Raw Material: Quickly breaking foam in aqueous or oil-phase systems, widely used in industrial processes such as fermentation, papermaking, and paints.
- Polyurethane Flexible Foam Starter: As a basic polyol raw material in flexible foam formulations, directly affecting foam resilience and comfort.
- Surfactant Synthesis Raw Material: Used to synthesize low-foam non-ionic surfactants, dispersants, and emulsifiers, imparting adjustable hydrophilic-lipophilic balance and broad compatibility to the product.
- Cosmetic Intermediate: Used as a humectant, emollient, and synergist, providing a light skin feel and good compatibility.
Precautions
- During operation, it is recommended to wear chemical safety goggles and chemically resistant gloves to avoid direct contact with eyes and skin.
- Use in a well-ventilated area; if necessary, use local exhaust ventilation. Thoroughly wash hands and any skin areas that may have come into contact after operation.
- In case of accidental eye contact, immediately rinse with plenty of water for at least 15 minutes, turning eyelids to ensure thorough cleaning; if irritation persists, seek medical attention promptly.
- Store with container tightly sealed to prevent moisture absorption, away from ignition sources, heat sources, and strong oxidizers, and separate from food, feed, and strong acids/alkalis.
- Products exceeding 24 months of storage should be retested and confirmed compliant before use.
