ASTM D56-22
Standard Test Method for Flash Point by Tag Closed Cup Tester

Standard No.

ASTM D56-22

Release Date

2022

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D56-22

Scope

1.1 This test method covers the determination of the flash point, by Tag manual and automated closed testers, of liquids with a viscosity below 5.5 mm2 /s (cSt) at 40 °C (104 °F), or below 9.5 mm2 /s (cSt) at 25 °C (77 °F), and a flash point below 93 °C (200 °F). 1.1.1 Two sets of test conditions are used within this test method: low temperature (LT) test conditions for expected flash points < 60 °C, and high temperature (HT) test conditions for expected flash points of ≥ 60 °C. 1.1.2 For the closed-cup flash point of liquids with the following properties: a viscosity of 5.5 mm2 /s (cSt) or more at 40 °C (104 °F); a viscosity of 9.5 mm2 /s (cSt) or more at 25 °C (77 °F); a flash point of 93 °C (200 °F) or higher; a tendency to form a surface film under test conditions; or containing suspended solids, Test Method D93 can be used. 1.1.3 For cut-back asphalts refer to Test Methods D1310 and D3143. NOTE 1—The U.S. Department of Transportation (RSTA)2 and U.S. Department of Labor (OSHA) have established that liquids with a flash point under 37.8 °C (100 °F) are flammable as determined by this test method for those liquids that have a viscosity less than 5.5 mm2 /s (cSt) at 40 °C (104 °F) or 9.5 mm2 /s (cSt) or less at 25 °C (77 °F), or do not contain suspended solids or do not have a tendency to form a surface film while under test. Other flash point classifications have been established by these departments for liquids using this test method. 1.2 This test method can be used to measure and describe the properties of materials, products, or assemblies in response to heat and flame under controlled laboratory conditions and cannot be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions. However, results of this test method can be used as elements of fire risk assessment that takes into account all of the factors that are pertinent to an assessment of the fire hazard of a particular end use. 1.3 Related standards are Test Methods D93, D1310, D3828, D3278, and D3941. 1 This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee D02.08 on Volatility. Current edition approved July 1, 2022. Published July 2022. Originally approved in 1918. Last previous edition approved in 2021 as D56 – 21a. DOI: 10.1520/ D0056-22. 2 For information on United States Department of Transportation regulations, see Codes of United States Regulation 49 CFR Chapter 1 and for information on United States Department of Labor regulations, see Code of United States Regulation 29 CFR Chapter XVII. Each of these items are revised annually and may be procured from the Superintendent of Documents, Government Printing Office, Washington, DC 20402. *A Summary of Changes section appears at the end of this standard Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States 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. 1 1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.5 WARNING—Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use Caution when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location. 1.6 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. For specific warning statements see 6.5, 7.1, 9.3, 11.1.4, and refer to Safety Data Sheets. 1.7 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 D56-22 Referenced Document

• ASTM D1310 Standard Test Method for Flash Point and Fire Point of Liquids by Tag Open-Cup Apparatus
• ASTM D3143 Standard Test Method for Flash Point of Cutback Asphalt with Tag Open-Cup Apparatus (Withdrawn 2007)
• ASTM D3278 Standard Test Methods for Flash Point of Liquids by Small Scale Closed-Cup Apparatus
• ASTM D3828 Standard Test Methods for Flash Point by Small Scale Closed Tester
• ASTM D3941 Standard Test Method for Flash Point by the Equilibrium Method With a Closed-Cup Apparatus
• ASTM D4057 Standard Practice for Manual 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*， 2023-07-01 Update
• ASTM D6300 Standard Practice for Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products and Lubricants
• ASTM D93 Standard Test Methods for Flash-Point by Pensky-Martens Closed Cup Tester
• ASTM E1 Standard Specification for ASTM Thermometers
• ASTM E502 Standard Test Method for Selection and Use of ASTM Standards for the Determination of Flash Point of Chemicals by Closed Cup Methods
• ISO 17034 General requirements for the competence of reference material producers

ASTM D56-22 history

• 2022 ASTM D56-22 Standard Test Method for Flash Point by Tag Closed Cup Tester
• 2021 ASTM D56-21a Standard Test Method for Flash Point by Tag Closed Cup Tester
• 2021 ASTM D56-21 Standard Test Method for Flash Point by Tag Closed Cup Tester
• 2016 ASTM D56-16a Standard Test Method for Flash Point by Tag Closed Cup Tester
• 2016 ASTM D56-16 Standard Test Method for Flash Point by Tag Closed Cup Tester
• 2005 ASTM D56-05(2010) Standard Test Method for Flash Point by Tag Closed Cup Tester
• 2005 ASTM D56-05 Standard Test Method for Flash Point by Tag Closed Cup Tester
• 2002 ASTM D56-02a Standard Test Method for Flash Point by Tag Closed Cup Tester
• 2002 ASTM D56-02 Standard Test Method for Flash Point by Tag Closed Tester
• 2001 ASTM D56-01 Standard Test Method for Flash Point by Tag Closed Tester
• 2000 ASTM D56-00 Standard Test Method for Flash Point by Tag Closed Tester
• 1993 ASTM D56-93 Standard Test Method for Flash Point by Tag Closed Tester
• 1987 ASTM D56-87 Standard Test Method for Flash Point by Tag Closed Tester
• 1970 ASTM D56-70 Standard Method Of Test For Flash Point By Tag Closed Tester