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STEPAN® MWA-501

1 of 47 products in this brand
STEPAN® MWA-501 is a methyl ester that can be used as either a solvent or a cosolvent in metalworking, die casting, and metal forming processes. It provides excellent film-forming properties and lubricity in straight oil, semi-synthetic, and full synthetic metalworking fluids. It is a non-staining product and has shown excellent results in metal-forming fluids as well as metal removal operations.

Functions: Anti-Wear Agent, Emulsifier, Extreme Pressure Additive, Solvent, Surfactant

Chemical Family: Amides, Esters

Features: Corrosion Resistant, Excellent Emulsifiability, Excellent Lubricity, Good Film Former, High Temperature Performance

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

Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Product Benefits
  • Hydrolytically stable, resistant to breakdown in the presence of water
  • Excellent lubricity versus industry standard.
  • Hard water tolerance capabilities
  • Low foaming capabilities
  • Oil soluble.
STEPAN® MWA Products Product Class Sub-Class Functional Characteristics
Emulsification Lubricity Antifoaming Metal Cleaning Hard Water Tolerance Antimisting Corrosion Inhibition Coupling Agent Biocidal Inert
500 Series Esters Methyl X X              
Simple X X       X      
Complex X X              
Hydrolytically Stable X X     X        

Applications & Uses

Markets
Applications

Stepan Methyl Esters can be used as either solvents or cosolvents in metalworking, die casting and metal forming processes. STEPAN MWA-501 provides excellent film forming properties and lubricity in straight oil, semi-synthetic and full synthetic metalworking fluids. It is a non-staining product and has shown excellent results in metal forming fluids as well as metal removal operations.

Properties

Physical Form
Appearance
Clear liquid (at 25°C)
Insoluble in
Water
Soluble in
Kerosene, Methanol, Xylene
Typical Properties
ValueUnitsTest Method / Conditions
Acid Numbermax. 1
Boiling Pointmin. 260°C
Colormax. 2Gardner Scale
Density (at 25°C)0.87g/ml
Flash Pointmin. 94°CPMCC Flash Point Tester
Iodine Number40
Melting Point14°C
Moisture Contentmax. 0.1%ASTM E 1064
Saponification Value199
Viscosity (at 25°C)7cPs
Volatile Organic Compound0.7%CARB, Attachment B

Regulatory & Compliance

Certifications & Compliance
Clearances

The international inventories (country clearances) of STEPAN MWA-501 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-501 is available in drums.

Storage & Handling

Storage & Handling
  • Normal safety precautions (i.e. gloves and safety goggles) should be employed when handling STEPAN Methyl Esters. Use products away from sparks and open flame in a well-ventilated area. Contact with the eyes and prolonged contact with the skin should be avoided. Wash thoroughly after handling materials. Product temperatures over 130°F (54°C) are not recommended. See SDS for more information.
  • STEPAN Methyl Esters can be stored in vessels of carbon steel, but 316 or 304 stainless steel is preferred. Tanks should be closed with venting through a gooseneck vent. The methyl esters should be stored between 90-110°F (32-43°C). External steam panel coils can be used if heating is required. Pumps, pipes, and transfer lines can be carbon steel, but 316 or 304 stainless steel is preferred. Rubber hoses are not recommended for extended use as methyl esters attack rubber. Drums should be stored in sealed containers at a temperature of 90-110°F (32-43°C). Storage under nitrogen will prevent degradation of the product over time.
Workplace Exposure

Workplace 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.