STP1335

    Silicate Stabilization Studies in Propylene Glycol

    Published: Jan 1999


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


    Abstract

    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.

    Keywords:

    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


    Paper ID: STP38255S

    Committee/Subcommittee: D15.19

    DOI: 10.1520/STP38255S


    CrossRef ASTM International is a member of CrossRef.