How to use PEG600DO, polyethylene glycol 600 dioleate?

PEG600DO (polyethylene glycol 600 dioleate) is a versatile nonionic surfactant. Its usage varies by application area, typically added directly to the formulation as an emulsifier, dispersant, or lubricating component. The recommended dosage is 1% to 10% of the total formulation, and the specific dosage should be determined through experiments based on system requirements and process conditions.

Detailed Description

PEG600DO is a light yellow to yellow liquid at room temperature, with good fluidity and operability. It can be directly weighed and added to the oil phase or aqueous phase. Due to its excellent chemical stability, it can be compounded with anionic, cationic, and nonionic surfactants, showing outstanding compatibility. In practical applications, it is recommended to first dissolve it in the oil phase under stirring conditions, then mix with the aqueous phase for emulsification. This allows for better utilization of its amphiphilic molecular structure to maximize emulsification advantages.

The HLB value of this product is about 8 to 9, belonging to the water-in-oil (W\/O) emulsifier category, but it is also commonly compounded with high HLB value emulsifiers for oil-in-water (O\/W) systems. During formulation development, the emulsion type and stability of the system can be precisely controlled by adjusting the ratio of PEG600DO to other emulsifiers. Its cloud point characteristic allows it to maintain stable emulsification activity at both room temperature and medium temperatures.

Usage Methods in Various Fields

Cosmetics and Personal Care Products

Used as a primary or auxiliary emulsifier in creams, lotions, makeup removers, sunscreens, etc. Recommended dosage is 2% to 6% of the total formulation. Operation: first add PEG600DO to the oil phase (such as mineral oil, silicone oil, vegetable oil, etc.), heat to 70~80°C and stir until dissolved evenly; simultaneously heat the aqueous phase to the same temperature; then slowly add the oil phase to the aqueous phase under homogenization stirring, homogenize for 3 to 5 minutes, then cool. Its mild and low-irritation characteristics make it suitable for leave-on products such as facial care and body lotions.

Textile Industry

Used for preparing synthetic fiber spinning oils and antistatic agents. Recommended dosage is 5% to 15% of the total oil agent. Mix PEG600DO with base oil, other emulsifiers, and antistatic components in proportion, heat to 40~50°C and stir evenly to obtain a stable spinning oil concentrate. Dilute with water to the required concentration (usually 5% to 15% working solution) before use. It imparts good smoothness and cohesion to fibers, effectively reducing breakage rates during spinning.

Metalworking Fluids

Used as an emulsifying and lubricating component in emulsified cutting fluids, grinding fluids, and rolling oils. Recommended dosage is 8% to 20% of the concentrate. Preparation: first mix PEG600DO evenly with oil-soluble components such as base oil, rust inhibitors, and extreme pressure additives, then add water to dilute into a working solution. It possesses both emulsifying and lubricating functions, helping to improve machining precision and workpiece surface finish.

Pesticide Formulations

Used as an emulsifying component in pesticide emulsifiable concentrates, microemulsions, and emulsion concentrates. Recommended dosage is 3% to 8% of the total formulation. Dissolve the technical material in an organic solvent, then add PEG600DO and stir evenly to obtain an emulsifiable concentrate; for preparing an emulsion concentrate, slowly add the oil phase containing PEG600DO to water under high shear conditions to emulsify. Recommended storage temperature is 5~40°C, sealed.

Industrial Cleaners

Used in degreaser and hard surface cleaner formulations. Recommended dosage is 2% to 5% of the total formulation. Can be compounded with anionic surfactants (such as sulfonates) and nonionic surfactants, directly added to water and stirred to dissolve. It has excellent emulsifying and stripping ability for mineral oils and greases, and its low-foaming property facilitates subsequent rinsing processes.

Technical Parameters

Application Recommendations

• Emulsification Process Points: It is recommended to use the "additives in oil phase, hot emulsification" process. That is, first dissolve PEG600DO in the oil phase and preheat to 70~80°C, then mix and emulsify with the aqueous phase at the same temperature. This yields an emulsion with more uniform particle size and better stability.
• Compounding Strategy: To prepare O\/W emulsions, it is recommended to compound PEG600DO with high HLB value emulsifiers (such as those with HLB 12~15) in a ratio of 1:1 to 1:3 to adjust the hydrophilic-lipophilic balance of the system.
• Dosage Optimization: For first use, start gradient experiments from 3% of the total formulation (3%, 5%, 8%, 10%), and determine the optimal dosage by observing emulsion stability, particle size distribution, and performance.
• Heating Caution: The flash point of this product is above 150°C, but prolonged high-temperature heating may cause color deepening. It is recommended to control the heating temperature below 100°C and avoid generating oil mist in enclosed spaces.

Precautions

• It is recommended to wear chemical safety goggles and permeable gloves (such as nitrile rubber gloves) during operation to avoid prolonged or repeated direct skin contact.
• In case of accidental eye contact, immediately flush with plenty of running water for at least 15 minutes. If irritation persists, seek medical attention.
• After opening, reseal immediately and keep the container upright with the lid facing up, away from strong oxidizing agents.
• Although this product is low in toxicity, avoid large spills into drains, water sources, or soil.
• Specific dosages and usage conditions in various application areas should be verified through laboratory small-scale tests before large-scale production.