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STEPAN® MWA-261

STEPAN® MWA-261 is a nonionic surfactant designed for low-foaming and defoaming applications. It can also be used functionally as a dispersant and wetting agent and is soluble in ethanol, isopropanol, methanol, toluene, xylene, and perchloroethylene solvents. It can be used as an emulsifier and lubricant in synthetic and semi-synthetic metalworking fluids and as a component of lubricants, gear and chain oils, metalworking fluids, hydraulic fluids, and plasticizers.

Brand: STEPAN (48 products)

Functions: Dispersant, Emulsifier, Surfactant (Nonionic), Wetting Agent

Features: Excellent Emulsifiability, Excellent Lubricity, Low Foaming

End Uses: Chain Oils, Gear Oils, Hydraulic Fluids, Metalworking Fluids, Semi-synthetic Metalworking Fluids, Synthetic Metalworking Fluids

Enhanced TDS

Knowde-enriched technical product data sheet

Identification & Functionality

Features & Benefits

Fluids & Lubricants Features
Biodegradability

Publicly available data shows this type of chemistry is inherently biodegradable.

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
Applications
Fluids & Lubricants Type
Fluids & Lubricants End Use
Applications

STEPAN MWA-261 is a nonionic surfactant designed for low-foaming and defoaming applications. It can also be used functionally as a dispersant and wetting agent and is soluble in ethanol, isopropanol, methanol, toluene, xylene, and perchloroethylene solvents. STEPAN MWA-261 can be used as an emulsifier and lubricant in synthetic and semi-synthetic metalworking fluids. STEPAN MWA-261 can be used as a component of lubricants, gear and chain oils, metalworking fluids, hydraulic fluids, and plasticizers.

Properties

Physical Form
Appearance
Clear liquid (at 25°C)
Typical Properties
ValueUnitsTest Method / Conditions
Actives Content100%-
Blender Foam Height (at 25°C, in 0.1% aqueous, 5 minutes)0mm-
Blender Foam Height (at 25°C, in 0.1% aqueous, Initial)0mm-
Cloud Point (5g in 25g Butyl Carbitol 25%)34.6°C-
Cloud Point (in 1% aqueous solution)18.5°C-
Colormax. 60-Apha Scale
Density (at 25°C)1.02g/ml-
Density (at 38°C)1.01g/ml-
Draves Wetting (at 25°C, in 0.1% aqueous)9.6sec-
Flash Pointmin. 94°C-
Hydroxyl Value37mg KOH/g-
Interfacial Tension with Light Mineral Oil (in 0.1% aqueous) 3.4dynes/cm-
pH (in 1% aqueous)6--
Pour Point-21.7°C-
Regulated Volatile Organic Chemicals0%U.S. EPA
Ross-Miles Foam Height (at 25°C, in 0.1% aqueous, 5 minutes)0mm-
Ross-Miles Foam Height (at 25°C, in 0.1% aqueous, Initial)31mm-
Ross-Miles Foam Height (at 50°C, in 0.1% aqueous, 5 minutes)0mm-
Ross-Miles Foam Height (at 50°C, in 0.1% aqueous, Initial)0mm-
Solubility in Water (at 25°C)min. 11wt%-
Surface Tension (in 0.1% aqueous)32.6dynes/cm-
Viscosity (at 25°C)263cPs-
Viscosity (at 38°C)141cPs-
Water Contentmax. 0.5%CLI-WATER

Regulatory & Compliance

Certifications & Compliance
Chemical Inventories
Clearances

The international inventories (country clearances) of STEPAN MWA-261 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.

Packaging & Availability

Packaging Type
Standard Packaging

STEPAN MWA-261 is available in drums.

Storage & Handling

Storage & Handling
  • Normal safety precautions (e.g. gloves and safety goggles) should be employed when handling STEPAN MWA-261. Contact with eyes, nose, or skin should be avoided. Wash thoroughly after handling STEPAN MWA-261. See the SDS for further information.
  • Non-Bulk Storage Recommendations: STEPAN MWA-261 should be stored in closed containers and kept in a cool, dry place away from incompatible materials (see Section 10 of the SDS). If material is frozen, it may be fluidized by warming with a drum heater or in a steam room. Drums should be vented prior to heating to avoid excessive pressure build up.
  • Bulk Storage Recommendations: STEPAN MWA-261 should be stored in vessels of 316 stainless steel, but carbon steel is also adequate with effective moisture exclusion. Elevated storage temperature may be desirable to maintain ease of pumping.
  • Product temperatures over 122°F (50°C) are not recommended.