ASTM D7236-16a(R2021) pdf free download

ASTM D7236-16a(R2021) pdf free download.Standard Test Method for Flash Point by Small Scale Closed Cup Tester (Ramp Method)
1. Scope
1.1 This test method covers the determination of the flash point of aviation turbine fuel, diesel fuel, kerosine and related products in the temperature range of 40 °C to 135 °C by a small scale closed cup apparatus. 1.2 This test method is only applicable to homogeneous materials that are liquid at or near ambient temperature and at temperatures required to perform the test. 1.3 This test method is not applicable to liquids contami- nated by traces of highly volatile materials. 1.4 This test method is a dynamic method and depends on a definite rate of temperature increase. It is one of many flash point methods available, and every flash point test method, including this one, is an empirical one. 1.5 If the user’s specification requires a defined flash point method, neither this test nor any other method should be substituted for the prescribed method without obtaining com- parative data and an agreement from the specifier. 1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.7 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 appro- priate safety, health, and environmental practices and deter- mine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 7 and the Material Safety Data Sheet for the product being tested. 1.8 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
5. Significance and Use
5.1 The flash point temperature is one measure of the tendency of the test specimen to form a flammable mixture with air under controlled laboratory conditions. It is only one of a number of properties that must be considered in assessing the overall flammability hazard of a material. 5.2 Flash point is used in shipping and safety regulations to define flammable and combustible materials and classify them. Consult the particular regulation involved for precise defini- tions of these classifications. 5.3 This test method can be used to measure and describe the properties of materials in response to heat and a test flame under controlled laboratory conditions and shall not be used to describe or appraise the fire hazard or fire risk of materials under actual fire conditions. However, results of this test method may be used as elements of a 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.
6. Apparatus
6.1 Flash Point Apparatus—The apparatus consists of an electrically heated test cup that is controlled automatically to give a temperature increase of 2.0 °C ⁄min 6 0.5 °C ⁄min, a lid and shutter assembly, a pilot and test flame, an automatic flash detector and a temperature display that displays and holds the test temperature when a flash is detected. The key parts and dimensions are described in Annex A1 and illustrated in A1.1. 6.2 Syringe, 2 mL, adjusted to deliver 2.00 mL 6 0.1 mL. 6.3 Barometer, accurate to 0.5 kPa. Barometers pre- corrected to give sea level readings, such as those used at weather stations and airports, shall not be used. N OTE 1—Automatic barometric correction in accordance with 12.2 may be installed in the apparatus. 6.4 Cooling Bath or Freezer, for cooling the samples, if required, and capable of cooling the sample to at least 10 °C below the expected flash point. If a freezer is used, it shall be of explosion-protected design.