1. Scope

1.1 This test method is for the determination of acetone, methyl acetate, or parachlorobenzotrifluoride (PCBTF), or combination of any of the three, in paints and coatings, by solid phase microextraction (SPME) headspace sampling, and subsequent injection into a gas chromatograph. It has been evaluated for cellulose nitrate, acrylic, and urethane solvent-borne systems. The established working range of this test method is: acetone, 28 to 90 %; methyl acetate, 12 to 22 %; parachlorobenzotrifluoride, 10 to 17 %. There is no reason to believe that it will not work outside these ranges. A minor modification of this test method would make it suitable for the analysis of the same analytes in water-borne coatings (see Note 1).

Note 1Water-borne paints are internally standardized and diluted with water followed by addition of solid sodium chloride.

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

1.3 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.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D3925 Practice for Sampling Liquid Paints and Related Pigmented Coatings

D6133 Test Method for Acetone, p-Chlorobenzotrifluoride, Methyl Acetate or t-Butyl Acetate Content of Solventborne and Waterborne Paints, Coatings, Resins, and Raw Materials by Direct Injection Into a Gas Chromatograph

E180 Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals

Keywords

acetone; acetone content by GC; gas chromatography (GC); head space sampling; methyl acetate; methyl acetate content by GC; parachlorobenzotrifluoride (PCBTF); PCBTF content by gas chromatography; solid phase microextraction (SPME); VOC; Acetone; Gas chromatography (GC)--paints/related coatings/materials; Headspace gas chromatography; Methyl acetate; Microextraction; Paint testing; PCBTF (parachlorobenzotrifluoride); SPME (solid phase microextraction);

ICS Code

ICS Number Code 87.060.30 (Solvents)

DOI: 10.1520/D6438-05

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