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Full Description

1.1 This test method covers the determination of the minimum temperature at which vapors in equilibrium with a liquid (or solid) chemical will be sufficiently concentrated to form flammable mixtures in air at atmospheric pressure. This test method is written specifically for determination of the temperature limit of flammability of systems using air as the source of oxidant and diluent. It may also be used for other oxidant/diluent combinations, including air plus diluent mixtures; however, no oxidant/diluent combination stronger than air should be used. Also, no unstable chemical capable of explosive decomposition reactions should be tested (see 8.3).

1.2 This test method is designed and written to be run at local ambient pressure and is limited to a maximum initial pressure of 1 atm abs. It may also be used for reduced pressures with the practical lower pressure limit being approximately 13.3 kPa (100 mm Hg). The maximum practical operating temperature of this equipment is approximately 150 °C (302 °F) (Note A1.2).

1.3 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are provided for information only.

1.4 This standard should be used to measure and describe the properties of materials, products, or assemblies in response to heat and flame under controlled laboratory 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 this test may be used as elements of a fire risk assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use.

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 and health practices and determine the applicability of regulatory limitations prior to use. Specific safety precautions are given in Section 8.

 

Document History

  1. ASTM E1232-07(2019)


    Standard Test Method for Temperature Limit of Flammability of Chemicals

    • Most Recent
  2. ASTM E1232-07(2013)


    Standard Test Method for Temperature Limit of Flammability of Chemicals

    • Historical Version
  3. ASTM E1232-07

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    Standard Test Method for Temperature Limit of Flammability of Chemicals

    • Historical Version
  4. ASTM E1232-02


    Standard Test Method for Temperature Limit of Flammability of Chemicals

    • Historical Version
  5. ASTM E1232-91(1996)


    Standard Test Method for Temperature Limit of Flammability of Chemicals

    • Historical Version