ASTM D1091-11(2016) PDF

Scope: 4.1 Knowledge of the phosphorus content, and thus the phosphorus-containing additives, in a lubricating oil or additive can be used to predict performance characteristics. This test method is suitable for most applications requiring the determination of phosphorus.

1.1 These test methods cover the determination of phosphorus in unused lubricating oils and lubricating oil additives and their concentrates. The test methods are not restricted with respect to the type of phosphorus compounds that may be present—for example, trivalent or pentavalent phosphorus compounds, phosphines, phosphates, phosphonates, phosphorus sulfides, and so forth—since all are quantitatively converted to an aqueous solution of orthophosphate ion by oxidation of the sample during the course of analysis.

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

1.3 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.

ASTM D1091-11(2016) Referenced Document

ASTM D1193 Standard Specification for Reagent Water
ASTM D4057 Standard Practice for Manual Sampling of Petroleum and Petroleum Products
ASTM D4177 Standard Practice for Automatic Sampling of Petroleum and Petroleum Products
ASTM D6299 Standard Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measurement System Performance

2011 ASTM D1091-11(2016) Standard Test Methods for Phosphorus in Lubricating Oils and Additives
2011 ASTM D1091-11 Standard Test Methods for Phosphorus in Lubricating Oils and Additives
2005 ASTM D1091-00(2005) Standard Test Methods for Phosphorus in Lubricating Oils and Additives
2000 ASTM D1091-00 Standard Test Methods for Phosphorus in Lubricating Oils and Additives