Knowde Enhanced TDS
Identification & Functionality
- Chemical Name
- Fluids & Lubricants Functions
- CAS No.
- 9038-95-3
- EC No.
- 618-542-7
- Technologies
Features & Benefits
- Fluids & Lubricants Features
- Product Benefits
- 100% active
- Standard emulsifier chemistries
- Hard water tolerant
- Metal cleaning components, low foaming and coupling agent capabilities
Functional Characteristics.
STEPAN® MWA Products Product Class Sub-Class Functional Characteristics Emulsification Lubricity Antifoaming Metal Cleaning Hard Water Tolerance Antimisting Corrosion Inhibition Coupling Agent Biocidal Inert 200 Series Alkoxylates Castor Oil X X Alcohol X X X X X X Nonyl Phenol X X X EO/PO Polymers X X
Applications & Uses
- Markets
- Fluids & Lubricants Type
- Fluids & Lubricants End Use
- Applications
- STEPAN MWA-251 is 100% active nonionic surfactant used as a wetting agent and for co-emulsification of difficult to solubilize components. This surfactant has a lowered pour point to reduce handling problems.
- STEPAN MWA-251 can be used as an emulsifier and coupling agent for metalworking formulations. It can enable improved performance in metal cleaning in metalworking applications and enhances lubricity in metalworking applications.
Properties
- Physical Form
- Appearance
- Light amber liquid (at 25°C)
- Soluble in
- Water, Methanol
- Insoluble in
- Kerosene
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Cloud Point (1% in 10% NaCl) | 50 | °C | - |
| Density (at 25°C) | 8.5 | g/ml | - |
| Flash Point | min. 94 | °C | PMCC Flash Point Tester |
| HLB | 12 | - | - |
| Moisture Content | max. 0.25 | % | - |
| pH (in 1% aqueous) | 6 | - | - |
| Pour Point | 21 | °C | - |
| Regulated Volatile Organic Chemicals | 0 | % | U.S. EPA |
| Viscosity (at 25°C) | 2000 | cPs | - |
Regulatory & Compliance
- Chemical Inventories
- Clearances
The international inventories (country clearances) of STEPAN MWA-251 can be found in Section 15 of the Safety Data Sheet (SDS). It is the responsibility of the formulator to review the chemical control regulations for each country where the end-product is intended to be sold or used.
Technical Details & Test Data
- Falex Four-Ball Wear Test
Lubricity is measured using the Falex Four-Ball Wear test and is used to determine the wear-preventing properties of lubricants in metalworking applications. Lubricants are compared using the average size of the scar diameters worn on the three lower clamped balls. STEPAN MWA-251 shows improved lubrication by showing reduced average scar when compared to the current industry standard.
FALEX 4-Ball Wear (ASTM D-4172B) Average Scar, Diameter, mm Commercial Standard 0.628 STEPAN MWA-251 0.525
Packaging & Availability
- Packaging Type
- Standard Packaging
STEPAN MWA-251 is available in drums.
Storage & Handling
- Storage & Handling
- Contact with the eyes and prolonged contact with the skin should be avoided. Wash thoroughly after handling materials.
- Normal safety precautions (i.e., gloves and safety goggles) should be employed when handling STEPAN MWA-251. Contact with eyes, nose or prolonged contact with skin should be avoided. Wash thoroughly after handling STEPAN MWA-251. See SDS for more information.
- Workplace Exposure
Occupational exposure can occur primarily through skin contact or via inhalation of vapors and mists. Engineering controls, personal protective equipment, and other workplace practices should be used to control these exposures. See SDS for more information.