Standard Practice for Determining Volatile Organic Compound (VOC) Content of Paints and Related Coatings

Importancia y uso:

5.1 This practice discusses applicable ASTM test methods used in the determination of the VOC content of paints and related coatings and provides equations for calculating the VOC content expressed as the mass of VOC: (1) per unit volume of coating less water and exempt volatile compounds, (2) per unit volume of coating solids, and (3) per unit mass of coating solids.

5.2 Volatile organic compound content is used to compare the amount of VOC released from different coatings used for the same application, that is, to coat the same area to the same dry film thickness (assuming the same application efficiency).

5.3 VOC content data are required by various regulatory agencies.

5.4 Only the expression of VOC content as a function of the volume of coating solids gives a linear measure of the difference in VOC released from different coatings used for the same application.

Note 4: Thus assuming the same transfer efficiency, a coating with VOC content of 3 lb of VOC/gal of solids would release ¹/₂ the VOC that would a coating with 6 lb of VOC/gal of solids.

5.5 When VOC content is expressed as a function of the volume of coating less water and exempt solvents, the values obtained do not account for differences in the volume solids content of the coatings being compared; this expression, therefore, does not provide a linear measure of the difference in VOC emitted from different coatings used for the same application.

Note 5: Thus, a coating with VOC content of 3 lb of VOC/gal less water and exempt volatile compounds would release about 85 % less VOC than a coating with 6 lb of VOC/gal less water and exempt volatile compounds.

Subcomité:

D01.21

Referida por:

D6053-14R18, D3451-24, E1797-12R17E01, A1111-22, E1795-20A, D2369-24, A1109-22, D6266-00AR23, D3794-22, D6093-97R22, D7768-12R18, D7270-07R21, D5201-05AR20, D6886-24, D6577-24A, D7245-09R21, D4017-22, D6763-16R22, A0888-24, A0074-21, D5324-16R22, D5146-10R19

Volúmen:

06.01

Número ICS:

87.040 (Paints and varnishes)

Palabras clave:

test precision; VOC; VOC calculations; VOC content; VOC content of paint;