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

SIGNIFICANCE AND USE
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, and (2) per unit volume of coating solids and (3) per unit mass of coating solids.
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).
VOC content data are required by various regulatory agencies.
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 ½ the VOC that would a coating with 6 lb of VOC/gal of solids.
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.
SCOPE
1.1 This practice measures the volatile organic compound (VOC) content of solventborne and waterborne paints and related coatings as determined from the quantity of material released from a sample under specified bake conditions and subtracting exempt volatile compounds and water if present.
Note 1—The regulatory definition, under the control of the U.S. EPA, can change. To ensure currency, contact the local air pollution control agency.
1.2 This practice provides a guide to the selection of appropriate ASTM test methods for the determination of VOC content.
1.3 Certain organic compounds that may be released under the specified bake conditions are not counted toward coating VOC content because they do not participate appreciably in atmospheric photochemical reactions. Such negligibly photochemically reactive compounds are referred to, as exempt volatile compounds in this practice.
Note 2—Information on the US EPA definition of VOC and a list of the current US EPA approved exempt volatile compounds which have been used in coatings, are provided in .
1.4 VOC content is calculated as a function of (1) the volume of coating less water and exempt volatile compounds, and (2) the volume of coating solids, and (3) the weight of coating solids.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.6 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.

General Information

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Historical
Publication Date
30-Jun-2005
Current Stage
Ref Project

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ASTM D3960-05 - Standard Practice for Determining Volatile Organic Compound (VOC) Content of Paints and Related Coatings
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D3960 − 05
StandardPractice for
Determining Volatile Organic Compound (VOC) Content of
1
Paints and Related Coatings
This standard is issued under the fixed designation D3960; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 2. Referenced Documents
2
1.1 This practice measures the volatile organic compound
2.1 ASTM Standards:
(VOC) content of solventborne and waterborne paints and
D1475Test Method For Density of Liquid Coatings, Inks,
related coatings as determined from the quantity of material
and Related Products
released from a sample under specified bake conditions and
D2369Test Method for Volatile Content of Coatings
subtracting exempt volatile compounds and water if present.
D2697Test Method for Volume Nonvolatile Matter in Clear
or Pigmented Coatings
NOTE 1—The regulatory definition, under the control of the U.S. EPA,
can change. To ensure currency, contact the local air pollution control
D2832GuideforDeterminingVolatileandNonvolatileCon-
agency.
tent of Paint and Related Coatings
1.2 This practice provides a guide to the selection of
D3792TestMethodforWaterContentofCoatingsbyDirect
appropriateASTM test methods for the determination of VOC
Injection Into a Gas Chromatograph
content.
D3925Practice for Sampling Liquid Paints and Related
Pigmented Coatings
1.3 Certain organic compounds that may be released under
D4017Test Method for Water in Paints and Paint Materials
the specified bake conditions are not counted toward coating
VOC content because they do not participate appreciably in by Karl Fischer Method
atmospheric photochemical reactions. Such negligibly photo- D4457Test Method for Determination of Dichloromethane
chemically reactive compounds are referred to, as exempt and 1,1,1-Trichloroethane in Paints and Coatings by
volatile compounds in this practice. Direct Injection into a Gas Chromatograph
D5095Test Method for Determination of the Nonvolatile
NOTE2—InformationontheUSEPAdefinitionofVOCandalistofthe
Content in Silanes, Siloxanes and Silane-Siloxane Blends
current US EPA approved exempt volatile compounds which have been
used in coatings, are provided in Appendix X3. Used in Masonry Water Repellent Treatments
D5201Practice for Calculating Formulation Physical Con-
1.4 VOC content is calculated as a function of (1) the
stants of Paints and Coatings
volume of coating less water and exempt volatile compounds,
D5403Test Methods for Volatile Content of Radiation Cur-
and (2) the volume of coating solids, and (3) the weight of
able Materials
coating solids.
D6093Test Method for Percent Volume Nonvolatile Matter
1.5 The values stated in SI units are to be regarded as
in Clear or Pigmented Coatings Using a Helium Gas
standard.
Pycnometer
1.6 This standard does not purport to address all of the
D6133Test Method for Acetone, p-Chlorobenzotrifluoride,
safety concerns, if any, associated with its use. It is the
Methyl Acetate or t-Butyl Acetate Content of Solvent-
responsibility of the user of this standard to establish appro-
borne and Waterborne Paints, Coatings, Resins, and Raw
priate safety and health practices and determine the applica-
Materials by Direct Injection Into a Gas Chromatograph
bility of regulatory limitations prior to use.
D6419Test Method for Volatile Content of Sheet-Fed and
Coldset Web Offset Printing Inks
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
Related Coatings, Materials, and Applications and is the direct responsibility of
2
Subcommittee D01.21 on Chemical Analysis of Paints and Paint Materials. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved July 1, 2005. Published August 2005. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1981. Last previous edition approved in 2004 as D3960–04. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D3960-05. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D3960 − 05
D6438Test Method for Acetone, Methyl Acetate, and on the mixture. These values are combined using specified
Parachlorobenzotrifluoride Content of Paints, and Coat- equations to calculate the VOC content of the coating.
ings by Solid Phase Microextraction-Gas Chromatogra-
NOTE 3—In Reference Method24 the U.S. EPA defines a waterborne
phy
coating as any coating with mo
...

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