Compared with other polypropylene glycol series products on the market (such as PPG-200, PPG-400, PPG-1000, PPG-2000 and other molecular weight grades), Guoli Chemical's PPG-600 is in a "golden mid-molecular weight" range (molecular weight 570~630). Low molecular weight PPG (such as PPG-200/400) has low viscosity, relatively higher volatility and hygroscopicity, while ultra-high molecular weight PPG (such as PPG-2000 and above) has enhanced thickening and lubrication effects but reduced water solubility and ease of operation. PPG-600 achieves the optimal balance between the two - with moderate viscosity and good fluidity, it is convenient for pumping and metering operations while maintaining the flexibility imparting ability expected from polyether polyols. It is particularly suitable as a raw material for polyurethane prepolymer synthesis and as a multifunctional intermediate in various fields.
From a formulation compatibility perspective, the nonionic nature of PPG-600 gives it excellent compounding flexibility, allowing it to coexist with anionic, cationic, and amphoteric surfactants without charge interference. Although this is a general characteristic among similar products, its stability against acid, alkali, and hard water is particularly outstanding. It maintains functional stability over a wide pH range and in hard water environments, avoiding performance degradation that some similar products may experience under extreme conditions. Additionally, the low surface tension of PPG-600 provides excellent wetting, solubilizing, and dispersing capabilities, making it more efficient and requiring less dosage when used in defoamers, mold release agents, metalworking fluids, and other applications.
In terms of safety, Guoli Chemical's PPG-600 has a flash point ≥230°C (closed cup), placing it in the high flash point tier among similar products, making it safer for operation under high-temperature process conditions. Its acute oral toxicity LD₅₀ > 2,000 mg/kg (low toxicity) and non-irritating to skin meet the strict safety requirements for raw materials in industries such as daily chemicals and pharmaceuticals. Overall, PPG-600 builds clear product advantages in three dimensions: molecular weight design, application adaptability, and safety compliance.
| Parameter Name | PPG-600 Typical Value | Parameter Significance |
|---|---|---|
| Molecular Weight (Mn) | 570~630 | Affects viscosity, flexibility, and reactivity |
| Hydroxyl Value (mg KOH/g) | 178~197 | Reflects active hydrogen content, determines reactivity with isocyanates, etc. |
| HLB Value | 1.5 | Hydrophilic-lipophilic balance value, suitable for W/O emulsification and wetting dispersion |
| Kinematic Viscosity (cSt, 40℃) | 100~130 | Moderate viscosity, easy to handle, pump, and compound |
| Cloud Point (℃, 1% aqueous solution) | 30~40 | Nonionic cloud point characteristic, suitable for temperature-responsive formulations |
| pH (1% aqueous solution) | 5.0~7.0 | Near neutral, minimal impact on system pH |
| Flash Point (℃, closed cup) | ≥230 | High flash point, excellent operational safety |
| Density (g/cm³, 20℃) | 1.004~1.010 | Close to water, easy to disperse |
| Active Content (%) | ≥99 | High purity, low impurities, stable performance |
| Moisture Content (%) | ≤0.1 | Low moisture content, favorable for anhydrous reaction systems |