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


    Silicate Stabilization Studies in Propylene Glycol

    Published: Jan 1999

      Format Pages Price  
    PDF (296K) 25 $25   ADD TO CART
    Complete Source PDF (7.5M) 25 $115   ADD TO CART


    In most North American and many European coolant formulations, the corrosion inhibition of heat-rejecting aluminum surfaces is provided by alkali metal silicates. But, their tendency towards polymerization, leading to gelation and/or precipitation, can reduce the effectiveness of a coolant. This paper presents the results of experiments which illustrate formulation-dependent behavior of inorganic silicate in propylene glycol compositions. Specific examples of the effects of glycol matrix, stabilizer type, and hard water on silicate stabilization are provided.


    aluminum corrosion, alkali metal silicates, organosilicon stabilization, hard-water stability, mineral scale deposition

    Author Information:

    Schwartz, SA
    Research advisor, ARCO Chemical Company, Newtown Square, PA

    Committee/Subcommittee: D15.19

    DOI: 10.1520/STP38255S

    CrossRef ASTM International is a member of CrossRef.