DEG Monooleate Corrosion Inhibitor for Metalworking
CAS Number: 141-20-8
Diethylene glycol monooleate (DEG monooleate) is a non-ionic ester surfactant used as a mild corrosion inhibitor, emulsifier, and lubricity additive in water-based metalworking fluids. Its dual hydrophilic-lipophilic structure adsorbs onto metal surfaces while maintaining miscibility with water, providing effective ferrous corrosion protection in diluted cutting fluids. DEG monooleate also acts as a coupling agent to improve compatibility between the oil and water phases in semi-synthetic fluids.
Technical Specifications
| HLB value | ~6–8 |
| acid value | ≤5 mg KOH/g |
| appearance | Light yellow to amber liquid or soft paste |
| flash point (COC) | >200 °C |
| saponification value | 145–160 mg KOH/g |
| ester content (monooleate) | ≥70 wt% |
Applications
- Water-based metalworking fluid corrosion inhibitor for ferrous metals
- Semi-synthetic cutting fluid coupling agent and emulsification aid
- Textile and fiber processing lubricant for fiber-to-metal lubricity
- Hydraulic fluid component in water-glycol hydraulic fluids
- Corrosion inhibitor in industrial cleaning and surface treatment fluids
Key Features
- Non-ionic chemistry avoids sensitivity to water hardness and ionic strength in metalworking applications
- Combined corrosion inhibition and emulsification simplifies semi-synthetic cutting fluid formulation
- Good skin compatibility and low toxicity profile for worker safety in machining environments
- Compatible with anionic, cationic, and non-ionic surfactants in complex fluid compositions
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CAS Number
141-20-8
Category
Automotive Lubricant AdditivesAvailability
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