Polypropylene glycol PPG-600 (CAS: 25322-69-4) appears as a colorless to slightly yellow transparent viscous liquid, belonging to non-ionic surfactants. Its molecular structure is polymerized from propylene oxide with terminal hydroxyl groups, giving it both the flexible backbone of polyether and retained reactivity. It serves as a core synthetic raw material for polyurethane prepolymers and elastomers, reacting with isocyanates to impart excellent flexibility, resilience, and hydrolysis resistance to the final products.
The most significant functional feature of this product is its non-ionic property, which allows good compatibility with anionic, cationic, and amphoteric surfactants, offering extremely high formulation flexibility. At the same time, it maintains stable performance under a wide range of pH conditions and hard water environments, exhibiting strong resistance to acids, alkalis, and hard water, which makes it highly versatile in complex industrial formulation systems. Additionally, PPG-600 has low volatility and a high flash point (>200°C, closed cup), ensuring safe operation under high-temperature process conditions.
From an application perspective, PPG-600 integrates six major functions: emulsification, dispersion, wetting, solubilization, lubrication, and moisturizing, covering numerous fields including polyurethane synthesis, industrial defoamers, metalworking fluids, cosmetics, and pharmaceutical excipients. It is a truly multifunctional platform-type chemical raw material.
| Parameter | Specification/Index |
|---|---|
| Product Name | Polypropylene Glycol PPG-600 |
| CAS Number | 25322-69-4 |
| Appearance | Colorless to slightly yellow transparent viscous liquid |
| Ionic Type | Non-ionic |
| Flash Point (Closed Cup) | >200 °C |
| Acute Toxicity (Oral, Rat) | LD₅₀ > 2,000 mg/kg (Low Toxicity) |
| Skin Irritation | Non-irritating |
| GHS Classification | Not classified as a dangerous substance or mixture |
| Recommended Storage Temperature | 5 °C to 40 °C |
| Solubility | Miscible with water and various organic solvents |
According to Guoli Chemical product data, the main application scenarios of PPG-600 include:
This product is not classified as a dangerous substance and poses no significant health hazards under normal use conditions. However, it is still recommended to wear chemical safety goggles to prevent splashes into eyes, wear nitrile or neoprene rubber protective gloves, and ensure adequate ventilation in the workplace. During storage, keep away from strong oxidizing agents and strong acids, and avoid extreme temperatures and direct sunlight. Low temperatures may cause increased viscosity or solidification; before use, warm to room temperature and stir evenly. Refer to the Safety Data Sheet (SDS) for specific handling procedures.