ASTM D 4569 - 06 (Reapproved 2017) Standard Test Method for Rubber Compounding Materials - Determination of Acidity in Sulfur

Current edition approved May 1, 2017. Published May 2017. Originally approved in 1986. Last previous edition approved in 2012 as D4569 – 06 (2012). — 3 p.
This test method covers the determination of the acid material, which disassociates in distilled water, that is present in sulfur. The acidity is determined by an electrometric or visual titration.