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ASTM D5054 1990 Edition, April 27, 1990
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Standard Test Method for Rubber Chemicals-Diphenyl Guanidine (DPG) and Di-otolyl-guanidine (DOTG) Assay
Includes all amendments and changes through Reapproval Notice , 2014
Page Count:3
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This test method covers the determination of assay of diphenyl guanidine (DPG) and di-o-tolyl-guanidine (DOTG). It is based on a visual titration of DPG or DOTG with hydrochloric acid (HCl).

The assay is determined as mass percent.

The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.