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ASTM D5836

Standard Test Method for Determination of 2,4-Toluene Diisocyanate (2,4-TDI) and 2,6- Toluene Diisocyanate (2,6-TDI) in Workplace Atmospheres (1-2 PP Method)

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Organization: ASTM
Publication Date: 1 April 2008
Status: inactive
Page Count: 5
scope:

This test method describes the determination of 2,4-toluene diisocyanate (2,4-TDI) and 2,6-toluene diisocyanate (2,6-TDI) in air samples collected from workplace atmospheres in a cassette containing a glass-fiber filter impregnated with 1-(2-pyridyl)piperazine (1-2 PP). This procedure is very effective for determining the vapor content of atmospheres. Atmospheres containing aerosols cause TDI results to be underestimated.

This test method uses a high-performance liquid chromatograph (HPLC) equipped with a fluorescence or an ultraviolet (UV) detector (1-4).2,3

The validated range of the test method, as written, is from 1.4 to 5.6 µg of 2,4-TDI and 2,6-TDI which is equivalent to approximately 9.8 to 39 ppb for 2,4-TDI and 2,6-TDI based on a 20-L air sample. The HPLC method using an UV detector is capable of detecting 0.078 µg of 2,4-TDI and 0.068 µg of 2,6-TDI in a 4.0-mL solvent volume, which is equivalent to 0.55 ppb for 2,4-TDI and 0.48 ppb for 2,6-TDI based on a 20-L air sample.

The isomers of 2,4-TDI, and 2,6-TDI, can be separated utilizing a reversed phase column for the HPLC method. Because industrial applications employ an isomeric mixture of 2,4- and 2,6-TDI, the ability to achieve this separation is important.

The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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. See Section 9 for specific precautions.

2 Validation data and a preliminary draft of this test method were provided by the Salt Lake Technical Center of the U.S. Dept. of Labor, Occupational Safety and Health Administration, Salt Lake City, UT.

3 The boldface numbers in parentheses refer to the references at the end of this test method.

Document History

March 1, 2020
Standard Test Method for Determination of 2,4-Toluene Diisocyanate (2,4-TDI) and 2,6- Toluene Diisocyanate (2,6-TDI) in Workplace Atmospheres (1-2 PP Method)
This test method describes the determination of 2,4-toluene diisocyanate (2,4-TDI) and 2,6-toluene diisocyanate (2,6-TDI) in air samples collected from workplace atmospheres in a cassette containing...
ASTM D5836
April 1, 2008
Standard Test Method for Determination of 2,4-Toluene Diisocyanate (2,4-TDI) and 2,6- Toluene Diisocyanate (2,6-TDI) in Workplace Atmospheres (1-2 PP Method)
This test method describes the determination of 2,4-toluene diisocyanate (2,4-TDI) and 2,6-toluene diisocyanate (2,6-TDI) in air samples collected from workplace atmospheres in a cassette containing...
April 1, 2008
Standard Test Method for Determination of 2,4-Toluene Diisocyanate (2,4-TDI) and 2,6-Toluene Diisocyanate (2,6-TDI) in Workplace Atmospheres (1-2 PP Method)
This test method describes the determination of 2,4- toluene diisocyanate (2,4-TDI) and 2,6-toluene diisocyanate (2,6-TDI) in air samples collected from workplace atmospheres in a cassette containing...
October 1, 2003
Standard Test Method for Determination of 2,4-Toluene Diisocyanate (2,4-TDI) and 2,6-Toluene Diisocyanate (2,6-TDI) in Workplace Atmospheres (1-2 PP Method)
This test method describes the determination of 2,4-toluene diisocyanate (2,4-TDI) and 2,6-toluene diisocyanate (2,6-TDI) in air samples collected from workplace atmospheres in a cassette containing...
January 1, 1995
Standard Test Method for Determination of 2,4-Toluene Diisocyanate (2,4-TDI) and 2,6-Toluene Diisocyanate (2,6-TDI) in Workplace Atmospheres (1-2 PP Method)
1. Scope 1.1 This test method describes the determination of 2,4-toluene diisocyanate (2,4-TDI) and 2,6-toluene diisocyanate (2,6-TDI) in air samples collected from workplace atmospheres in a...

References

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