The TS 8156 standard published by the Turkish Standards Institute (TS) describes a test method for determining the auto-ignition temperature of liquid chemicals. While preparing this standard, the ASTM E659 standard published by the American Testing and Materials Organization (ASTM) was taken as a basis.
This international standard, whose full name is "ASTM E659-15 Standard test method for auto-ignition temperature of chemicals", defines a test method for determining the hot and cold flame self-ignition temperatures of a liquid chemical in the air at atmospheric pressure in a homogeneously heated container.
Within certain limitations, this test method is used to determine the autoignition temperature of solid chemicals that readily melt and evaporate at temperatures below the test temperature, and of gaseous chemicals at atmospheric pressure and temperature.
The autoignition temperature, or flash point, of a chemical or compound is the lowest temperature at which it spontaneously ignites in a normal atmosphere without an external source of ignition such as a flame or spark. This temperature is necessary to provide the activation energy required for combustion. The temperature at which a chemical will ignite decreases as pressure increases or oxygen concentration increases.
The flash point of a liquid is the lowest temperature at which it evaporates to form a flammable mixture in air. At the temperature of the flash point, the combustion of the vapor may cease when the ignition source is removed. Flash point is not the same thing as autoignition temperature, which does not require an ignition source. The flash point is defined as a higher temperature, the temperature at which the vapor continues to burn after igniting.
The flash point is often used as a defining characteristic of a liquid fuel and is also used to help identify the fire hazards of liquids. Liquids with a flash point lower than 60,5 degrees or 37,8 degrees (depending on the standard applied) are considered flammable. On the other hand, liquids with ignition temperatures above these temperatures are considered flammable.
Among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors, our organization also provides test services for the determination of self-ignition temperatures of liquid chemicals within the scope of the TS 8156 standard, with its trained and expert staff and advanced technological equipment.
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