Polypropylene Glycol PPG-200 is a non-ionic high molecular polymer, appearing as a colorless to slightly yellow transparent viscous liquid. It is a multifunctional chemical intermediate and basic raw material, widely used in fields such as lubrication, defoaming, mold release, and daily chemicals.
Product Overview
Polypropylene Glycol PPG-200 (CAS No.: 25322-69-4), chemically named polyoxypropylene glycol, has the molecular formula HO(C3H6O)nH (n≈3-4). This product is low-toxic and non-hazardous, with excellent chemical compatibility, good resistance to acid, alkali, and hard water environments, and is not easily hydrolyzed or precipitated. The flash point (closed cup) is greater than 150°C, making it a relatively safe industrial raw material.
PPG-200 has three core properties: High-efficiency emulsifying and dispersing ability—significantly reduces interfacial tension, ensuring uniform and stable formulations; Excellent wetting and solubilizing properties—good spreading performance, effectively improving the solubility of poorly soluble substances; Broad chemical compatibility—remains active under complex chemical conditions, suitable for various industrial systems.
Main Uses
PPG-200 is applied across seven major fields, as follows:
- Lubricant base oil: Used as a synthetic base oil for blending high-temperature chain oils, compressor oils, and gear oils, imparting excellent viscosity-temperature performance and oxidation stability to finished products.
- Hydraulic fluid component: Provides good lubricity and anti-wear protection for fire-resistant hydraulic fluids, suitable for demanding hydraulic systems under high temperature or near-ignition source conditions.
- Mold release agent: Used in polyurethane foam, rubber, and plastic processing to form a uniform isolating film, enhancing release efficiency and reducing mold fouling.
- Core raw material for defoamers: Quickly destroys foam in aqueous or oil-based systems, widely used in industrial processes such as fermentation, papermaking, and coatings.
- Cosmetic intermediate: Used as a humectant, emollient, and enhancer in creams, lotions, and hair products, providing a light skin feel.
- Starter for flexible polyurethane foam: Serves as a basic polyol raw material in flexible polyurethane foam formulations, directly affecting the rebound and comfort of the foam.
- Surfactant raw material: An important intermediate for synthesizing low-foam non-ionic surfactants, dispersants, and emulsifiers.
Technical Parameters
| Parameter | Specification |
|---|
| Appearance | Colorless to slightly yellow transparent liquid |
| Molecular Weight | 190~210 |
| Ion Type | Non-ionic |
| Hydroxyl Value (mgKOH/g) | 540~590 |
| Acid Value (mgKOH/g) | ≤0.10 |
| Moisture (%) | ≤0.10 |
| Density (g/cm³) | 1.004~1.010 |
| Kinematic Viscosity (mm²/s, at 40°C) | 30~40 |
| Refractive Index (25°C) | 1.447~1.450 |
| Flash Point (°C) | ≥200 |
| HLB Value | 1 |
| Cloud Point | None |
| pH Value (1% aqueous solution) | 5.0~7.0 |
| Freezing Point (°C) | Approx. -45 |
| Solubility | Soluble in water, easily soluble in organic solvents such as alcohols, esters, and ketones |
| Active Content (%) | ≥99 |
| Heavy Metals (ppm) | ≤10 |
| Packaging Specifications | 50kg plastic drum, 200kg plastic drum, IBC tote |
Application Suggestions
Based on end-use scenarios, the recommended application directions for PPG-200 are as follows: In lubricating oil and hydraulic fluid formulations, leverage its high flash point (≥200°C) and low pour point (freezing point approx. -45°C) characteristics for wide temperature range applications; in defoamer applications, combine with components such as hydrophobic silica to prepare long-lasting foam suppressants; in daily chemical products, it is recommended to be used as a humectant aid in compounding, with dosage adjusted according to formulation needs. Specific formulation ratios should be determined through experimentation.
Precautions
- The product is slightly hygroscopic; seal promptly after opening and store in a cool (5~35°C), dry, and well-ventilated place.
- When handling, it is recommended to wear chemical safety goggles and chemically resistant gloves to avoid direct contact with eyes and skin.
- Prolonged or repeated skin contact may cause degreasing and dryness; wash hands thoroughly after handling.
- It is recommended not to exceed 24 months from the production date for storage; if beyond shelf life, re-inspection is required before use.
- Disposal should comply with local regulations and be handled by qualified agencies; do not discharge into sewers or water bodies.
