You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.


    Characteristics of PAG Based Bio-Hydraulic Fluid

    Published: 01 October 2011

      Format Pages Price  
    PDF (1016K) 8 $25   ADD TO CART
    Complete Source PDF (60M) 406 $61   ADD TO CART

    Cite this document

    X Add email address send
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    Regulatory drivers both in the U.S. and in the European Union are attempting to promote the use of biodegradable lubricants in the marketplace. A base fluid that uses the first ever combination of biodegradable polyalkylene glycol (PAG) with a high oleic canola oil was developed to meet environmental accreditation standards. This combination utilizes the PAG to “upgrade” the vegetable oil in hydraulic fluid formulation and provide a base fluid that can solubilize the oxidation by-products and provide better deposit control compared to straight general purpose fluids that are based on vegetable oils. A general purpose bio-hydraulic fluid that use a blend of PAG and high oleic canola oil has shown enhanced performance characteristics in two critical tests namely an oxidation test (ASTM D 2893 B) and a hydraulic vane pump test (ASTM D 7043). These two tests clearly differentiate the superior attributes of the PAG-based bio-hydraulic fluid compared to a widely use general purpose biodegradable hydraulic fluid in the market place.


    oxidation stability, polyalkylene glycol, vegetable oil, biodegradability, wear, ester

    Author Information:

    Khemchandani, Govind
    The Dow Chemical Company, Freeport, TX

    Greaves, Martin R.
    The Dow Chemical Company, Horgen,

    Committee/Subcommittee: D02.12

    DOI: 10.1520/JAI103605