ASTM D6133 Acetone, p-Chlorobenzotrifluoride, Methyl Acetate or t-Butyl Acetate Content of Paints and Coatings

Scope:

ASTM D6133 is the test method to determine the levels of acetone, p-chlorobenzotrifluoride, methyl acetate, and t-butyl acetate in paints. This gas chromatographic test method is a quick and easy way to find out the levels of these chemicals. To prevent the risk of disruptions, this test procedure is only performed for materials with known composition. This test method’s specified working range is 1-100 % for each analyte. 

Test procedure:

For the ASTM D6133, the required aliquot of the entire paint is internally standardized, diluted with an appropriate solvent, and then injected into a chromatographic column that separates the chosen analytes from other volatile components. The analyte content is calculated using area estimates of the components that produce chromatogram peaks. 

Video 01: Gas chromatography

Specimen size:

Samples are created according to ASTM D6133 based on the number of specified analytes in the sample,  the viscosity, or both and diluted further if needed. 

Data:

As per the ASTM D6133, the weight percent of any of the analytes in the sample from the data obtained is calculated from the sample run as follows: 

where, 

A_analyte = area of the analyte peak 

A_i = area of the internal standard peak 

W_i= weight of the internal standard added to the sample 

W_s = weight of the sample 

R_analyte = response factor for the analyte 

Conclusion:

ASTM D6133 is the test method to determine the levels of acetone, p-chlorobenzotrifluoride, methyl acetate, and t-butyl acetate in paints.