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STEPAN® MWA-570 HS

STEPAN® MWA-570 HS is a diethylene glycol-phthalic anhydride-based modified polyester polyol that exhibits hydrolysis resistance and good thermal stability. It exhibits a good hardness/flexibility balance, clarity, and low color. It is used in metalworking formulations for improved lubrication properties and is a great option as a chlorinated paraffin replacement, either alone or with the addition of phosphate esters. It also shows improved lubrication by showing a reduced average scar when compared to the current industry standard.

Brand: STEPAN (48 products)

Chemical Name: 1,3-Isobenzofurandione, polymer with 2,2'-oxybis[ethanol]

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

Chemical Family: Anhydrides, Polyols, Polyols (Polyester)

Hydroxyl Value: 56.0 - 56.0 mg KOH/g

Enhanced TDS

Knowde-enriched technical product data sheet

Identification & Functionality

Features & Benefits

Base Chemicals Features
Fluids & Lubricants Features
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
Base Chemicals End Uses
Applications

STEPAN MWA-570 HS is a diethylene glycol-phthalic anhydride-based modified polyester polyol that exhibits hydrolysis resistance, good thermal stability and low polyol. It exhibits a good hardness/flexibility balance, clarity and low color. STEPAN MWA-570 HS is used in metalworking formulations for improved lubrication properties. MWA-570 HS is a great option as a chlorinated paraffin replacement either alone, or with the addition of phosphate esters.

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Acid Numbermax. 1.5mg KOH/g-
Colormax. 3-Gardner Scale
Density (at 75°C)1.27g/ml-
Equivalent Weight1002--
Functionality2Eq/molCalculated
Glass Transition Temperature (pure polyol)-1°C-
Hydroxyl Number56mg KOH/g-
Specific Gravity (at 75°C)1.27--
Viscosity (at 80°C)4150cPs-
Water Contentmax. 0.05wt%-

Regulatory & Compliance

Chemical Inventories
Clearances

The international inventories (country clearances) of STEPAN MWA-570 HS 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 4-Ball and Falex Pin and Vee Testing

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-570 HS shows improved lubrication by showing reduced average scar when compared to the current industry standard.

  Falex 4-Ball Wear
ASTM D4172B
Falex Pin and Vee Test
ASTM D3233
  Average Scar, mm Test Load,
lbs
Failure Load,
lbs
Torque,
lbs
Temperature,
⁰F
Industry Standard 0.628 1250 1250 27 166
STEPAN MWA-570 HS 0.336 4500 4500+ 78 315

 

Packaging & Availability

Standard Packaging

STEPAN MWA-570 HS is available in drums.

Storage & Handling

Storage & Handling
  • Normal safety precautions (e.g. gloves and safety goggles) should be employed when handling STEPAN MWA-570 HS. Contact with eyes, nose or prolonged contact with skin should be avoided. Wash thoroughly after handling STEPAN MWA-570 HS. See the SDS for further information.
  • Storage in sealed containers at temperatures of 60-95°F (15-35°C) is recommended.
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 the SDS for further information.