1.1 This test method describes the detection of corrosive sulfur compounds (both inorganic and organic) in electrical insulating liquids.
1.2 New and in-service insulating liquids may contain elemental sulfur or sulfur compounds, or both, that cause corrosion under certain conditions of use. This test method is designed to detect the presence of, or the propensity to form, free (elemental) sulfur and corrosive sulfur compounds by subjecting copper or silver to contact with an insulating liquid under prescribed conditions.
1.3 The values stated in SI units are to be regarded as the standard. Inch-pound units are included for informational purposes.
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM D1275-24 Referenced Document
ANSI B74.10 Specifications for Grading of Abrasive Microgrits*, 2025-05-02 Update
ASTM D130 Standard Test Method for Detection of Copper Corrosion from Petroleum Products by the Copper Strip Tarnish Test
ASTM D923 Standard Practices for Sampling Electrical Insulating Liquids
ASTM E11 Standard Specification for Wire Cloth and Sieves for Testing Purposes
ASTM D1275-24 history
2024ASTM D1275-24 Standard Test Method for Corrosive Sulfur in Electrical Insulating Liquids (Standard + Redline PDF Bundle)
2015ASTM D1275-15 Standard Test Method for Corrosive Sulfur in Electrical Insulating Liquids
2006ASTM D1275-06 Standard Test Method for Corrosive Sulfur in Electrical Insulating Oils
2003ASTM D1275-03 Standard Test Method for Corrosive Sulfur in Electrical Insulating Oils
1996ASTM D1275-96a Standard Test Method for Corrosive Sulfur in Electrical Insulating Oils