ASTM D 8016 - 15 Standard Test Method for Silica, Precipitated, Hydrated - Sears Number

Current edition approved Nov. 1, 2015. Published December 2015. — 3 p.
This test method is used to determine the number of silanol groups on the surface of silica by titration according to a method as developed by Sears. This test method is suitable for characterizing rubber-grade silicas.