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Significance and Use
5.1 Flash point is one of the properties used to define the flammability of a liquid. It is used to classify liquids according to their flammability by governmental regulatory agencies. It may also be used to determine the presence of impurities or contaminants in a given liquid, such as the presence of residual solvents in solvent-refined drying oils. See Test Methods and for alternate flash point testing.
1.1 These test methods cover procedures for determining whether a material does or does not flash at a specified temperature or for determining the lowest finite temperature at which a material does flash when using a small scale closed-cup apparatus. The test methods are applicable to paints, enamels, lacquers, varnishes, and related products having a flash point between 0 and 110°C (32 and 230°F) and viscosity lower than 150 St at 25°C (77°F).
Note 1: Tests at higher or lower temperatures are possible.
Note 2: More viscous materials may be tested in accordance with .
Note 3: Organic peroxides may be tested in accordance with , which describes the applicable safety precautions.
Note 4: The U.S. Department of Labor (OSHA, Hazard Communications), the U.S. Department of Transportation (RSPA), and the U.S. Environmental Protection Agency (EPA) have specified Test Methods as one of several acceptable methods for the determination of flash point of liquids in their regulations.
Note 5: These test methods are similar to International Standards ISO 3679 and ISO 3680.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard should be used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions and should not be used to describe or appraise the fire-hazard or fire-risk of materials, products, or assemblies under actual fire conditions. However, results of the test may be used as elements of a fire-hazard or a fire-risk assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard or fire risk of a particular end use.
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. For specific hazard statements, see and .
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ISO StandardsISO 3679 Paints, varnishes, petroleum and related productsDetermination of flash pointRapid equilibrium method ISO 3680 Paints, varnishes, petroleum and related productsFlash/no flash testRapid equilibrium method
D56 Test Method for Flash Point by Tag Closed Cup Tester
D93 Test Methods for Flash Point by Pensky-Martens Closed Cup Tester
D850 Test Method for Distillation of Industrial Aromatic Hydrocarbons and Related Materials
D1015 Test Method for Freezing Points of High-Purity Hydrocarbons
D1078 Test Method for Distillation Range of Volatile Organic Liquids
UNSPSC Code 41116301(Flash point testers)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D3278-20, Standard Test Methods for Flash Point of Liquids by Small Scale Closed-Cup Apparatus, ASTM International, West Conshohocken, PA, 2020, www.astm.orgBack to Top