Polypropylene Glycol PPG-600 is a non-ionic propylene oxide polymer, appearing as a colorless to slightly yellow transparent viscous liquid. It is an important functional intermediate and basic raw material in the industrial and daily chemical fields.
Detailed Description
Polypropylene Glycol PPG-600 (CAS: 25322-69-4), also known as Polypropylene Glycol 600, Polyoxypropylene Glycol, Propylene Glycol Polyether, Polyoxypropylene Diol, etc., is an α-hydro-ω-hydroxy polyoxypropylene polymerized from propylene oxide. Its molecular chain contains ether bonds and terminal hydroxyl groups, endowing the product with excellent chemical stability and broad compatibility.
As a non-ionic polymer, PPG-600 has excellent emulsifying and dispersing properties, effectively reducing interfacial tension. It also provides good solubilization effects for various active ingredients, improving formulation uniformity. The product is compatible with anionic, cationic, and amphoteric surfactants, offering high formulation flexibility. It maintains stable performance under a wide range of pH conditions and in hard water environments, demonstrating strong adaptability.
PPG-600 features low volatility and a high flash point (>200°C, closed cup), ensuring operational safety and suitability for high-temperature processes. In addition, its good lubricating and moisturizing properties impart a suitable feel and user experience to end products. Acute oral toxicity (rat) LD₅₀ > 2,000 mg/kg, classifying it as a low-toxicity substance with no skin irritation and no significant harm to human health under normal use conditions.
Technical Parameters
| Parameter Name | Parameter Value |
|---|
| Product Name | Polypropylene Glycol PPG-600 |
| CAS Number | 25322-69-4 |
| Product Type | Non-ionic Propylene Oxide Polymer |
| Appearance | Colorless to Slightly Yellow Transparent Viscous Liquid |
| Flash Point (Closed Cup) | > 200 °C |
| Acute Oral Toxicity (Rat) | LD₅₀ > 2,000 mg/kg |
| Skin Irritation | Non-irritating |
| GHS Classification | Not classified as hazardous substance or mixture |
| Transport Classification | Non-dangerous goods |
| Recommended Storage Temperature | 5 °C to 40 °C |
Application Suggestions
Polypropylene Glycol PPG-600 has an extremely wide range of applications, mainly covering the following areas:
- Polyurethane Industry: As a core component of polyether polyols, it reacts with isocyanates to form prepolymers and elastomers, endowing products with excellent flexibility, resilience, and hydrolysis resistance.
- Industrial Defoamer: Leveraging its low surface tension and good dispersibility, it is suitable for foam control in fields such as fermentation, papermaking, and coatings.
- Synthetic Lubricants and Metalworking Fluids: As a base oil or additive component, it provides excellent lubricity, thermal oxidative stability, and high viscosity index, and can be used in cutting fluids, quenching fluids, and water-glycol fire-resistant hydraulic fluids.
- Release Agents and Plasticizers: Forms a release film between mold and product for smooth demolding; also acts as a softener for resin systems.
- Daily Chemicals and Pharmaceuticals: Used in cosmetics as a solvent, humectant, and skin feel modifier; also serves as a water-soluble base material for medical ointments and suppositories, and as a synthetic intermediate for non-ionic surfactants.
Precautions
- Eye contact may cause mild irritation (e.g., redness, tearing). It is recommended to wear chemical safety goggles during operation.
- Prolonged or repeated skin contact may cause skin defatting. It is recommended to wear nitrile rubber or neoprene protective gloves.
- In high-temperature environments, keep away from open flames and ensure good ventilation. Install local exhaust ventilation during heating or spraying processes.
- Store away from strong oxidizers (e.g., peroxides, perchlorates, nitric acid) and strong acids to prevent violent reactions.
- Low temperatures may increase viscosity or cause solidification. Warm up to room temperature and stir evenly before use.
- Avoid direct discharge into water bodies. Waste disposal should be carried out via incineration or recycling at licensed waste treatment facilities.
