Polypropylene glycol PPG-200 is widely used in seven core industries and process areas, including the polyurethane industry, lubricants and hydraulic fluids, industrial release agents and defoamers, daily cosmetics, and surfactant synthesis.
Detailed Explanation
Polypropylene glycol PPG-200 (CAS number: 25322-69-4) is a nonionic high-molecular polymer, appearing as a colorless to slightly yellow transparent viscous liquid. With its excellent wetting, emulsifying, and solubilizing properties, as well as high tolerance to acid, alkali, and hard water environments, PPG-200 plays a key intermediate role in many industrial fields. Its low toxicity and low volatility also make it popular in the daily chemical industry.
In the industrial chain, PPG-200 connects upstream propylene oxide polymerization processes and is widely used downstream in polyurethane materials, industrial lubricants, process aids, and personal care products, serving as an important bridge between basic chemicals and fine chemicals.
Application Recommendations
According to the Guoli Chemical product database, PPG-200 is specifically applied in the following seven industries and process directions:
- Lubricant Base Oil: Used as a preferred synthetic base oil for formulating high-temperature chain oils, compressor oils, and gear oils, providing excellent viscosity-temperature performance and oxidation stability.
- Hydraulic Fluids: As a key component of fire-resistant hydraulic fluids, offering good lubricity and anti-wear protection, suitable for hydraulic systems near high temperatures and ignition sources.
- Release Agents: High-performance release agent component for polyurethane foam, rubber, and plastic processing, forming a uniform barrier film to improve release efficiency and reduce mold fouling.
- Defoamers: Core raw material for defoamers, quickly breaking foam in aqueous or oil-phase systems, widely used in fermentation, papermaking, and coatings.
- Cosmetic Intermediates: As humectants, emollients, and synergists in creams, lotions, and hair products, providing a light skin feel and good compatibility.
- Polyurethane Flexible Foam Polyol Starter: Basic polyol raw material in flexible polyurethane foam formulations, reacting with isocyanates to build flexible chain segments, directly affecting foam resilience and comfort.
- Surfactant Raw Materials: Used to synthesize low-foam nonionic surfactants, dispersants, and emulsifiers, imparting tunable hydrophilic-lipophilic balance and broad compatibility.
Technical Parameters
| Parameter Item | Parameter Value |
|---|
| Chemical Name | Polyoxypropylene diol |
| CAS Number | 25322-69-4 |
| Product Type | Nonionic high-molecular polymer |
| Appearance | Colorless to slightly yellow transparent viscous liquid |
| Flash Point (Closed Cup) | > 150 °C |
| Toxicity Classification | Low toxicity, non-hazardous |
| Acute Toxicity LD50 (Oral, Rat) | > 2 000 mg/kg |
| HLB Value | Not available |
| Hydroxyl Value | Not available |
| Cloud Point | Not available |
Precautions
- GHS Classification: May cause eye irritation (H319), wear chemical safety goggles and chemical-resistant gloves during handling.
- Storage Conditions: Recommended temperature 5–35°C, cool, dry, well-ventilated, keep container tightly sealed to prevent moisture absorption, away from ignition sources, heat sources, and strong oxidizers.
- Shelf Life: Recommended not to exceed 24 months from the date of manufacture; test before use if beyond.
- Spill Handling: Small spills: absorb with inert material (e.g., sand, vermiculite); large spills: dike source, prevent entry into drains or waterways.
- Suitable Extinguishing Media: Water fog, alcohol-resistant foam, dry powder, carbon dioxide.
