Active Standard: D460 - 91(2014)
This standard is being balloted for withdrawal. If enough interest is found to retain it then it will be addressed for reapproval. In my initial review of this standard, I found there are many useful methods in this standard but quite a few that use old technology and need updating. For example: (this is not a complete list) There is no reference to the Karl-Fisher titration in the section on water content but it is widely used.The inorganic chloride analysis procedure is a silver titration with a visual endpoint. Many labs are using titrations with potentiometric endpoints or analysis by Ion Chromatography instead.The inorganic sulfate analysis procedure is a gravimetric method with precipitation using Barium Nitrate. Many labs are using the Lead Perchlorate titration D6174, or using Ion Chromatography.Very few of the procedures have precision and accuracy references and this needs to be addressed, at least by an editorial change indicating they have not been performed.
Draft Under Development