ASTM D2743-68(2010)

    Standard Practices for Uniformity of Traffic Paint Vehicle Solids by Spectroscopy and Gas Chromatography (Withdrawn 2015)

    Withdrawn Standard: ASTM D2743-68(2010) | Developed by Subcommittee: D01.44

    WITHDRAWN, NO REPLACEMENT


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    Withdrawn Rationale:

    These practices provide general information on the instrumental techniques available for detecting adulteration or nonuniformity of the chemical nature of the vehicle solids in purchased lots of traffic paints by means of the individual or combined use of infrared and ultraviolet spectroscopy and gas chromatography. The procedures given are applicable when traffic paint is selected and purchased on the basis of pre-qualification laboratory or road performance tests, or both, and a reference sample of the original paint so evaluated and selected is retained and compared with these samples representative of subsequent purchased and delivered lots of such paint and which are required to be the same as the original reference sample.

    Formerly under the jurisdiction of Committee D01 on Paint and Related Coatings, Materials, and Applications, this practice was withdrawn in June 2015. This standard is being withdrawn without replacement due to its limited use by industry.

    1. Scope

    1.1 These practices provide general information on the instrumental techniques available for detecting adulteration or nonuniformity of the chemical nature of the vehicle solids in purchased lots of traffic paints by means of the individual or combined use of infrared and ultraviolet spectroscopy and gas chromatography. The procedures given are applicable when traffic paint is selected and purchased on the basis of pre-qualification laboratory or road performance tests, or both, and a reference sample of the original paint so evaluated and selected is retained and compared with test samples representative of subsequent purchased and delivered lots of such paint and which are required to be the same as the original reference sample.

    1.2 Although not specifically provided for in these practices, the methods given may also be applied, with appropriate modification, to evaluating the acceptability of traffic paints that have been purchased on the basis of composition specifications. In such cases, application is limited to the vehicle solids as before, as well as the availability of a suitable standard or range of standards representative of the vehicle solids that are acceptable and with which samples of subsequent delivered lots will be compared.

    1.3 The techniques provided are wholly adequate for detecting gross adulteration of the vehicle solids where completely different drying oils, resins, or polymers, or combinations of these have been substituted for those originally contained in the reference sample. In cases of lesser adulteration or modification, these methods have been found adequate for detecting vehicle solids, adulterations, or modifications as low as 5 weight % of the vehicle solids.

    1.4 These techniques have been developed on the basis of cooperative work with alkyd, chlorinated rubber-alkyd, and poly(vinyl toluene) type paints involving the detection of nonuniformity when such extraneous materials as rosin, fish oil, hydrocarbon resin, and chlorinated paraffin have been added. The procedures given may be, but are not necessarily completely applicable to all other types of vehicle solids or extraneous additions, or both.



    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

    D1259 Test Methods for Nonvolatile Content of Resin Solutions

    D1397 Test Method for Unsaponifiable Matter in Alkyd Resins and Resin Solutions

    D2245 Test Method for Identification of Oils and Oil Acids in Solvent-Reducible Paints

    D2372 Practice for Separation of Vehicle From Solvent-Reducible Paints

    D2621 Test Method for Infrared Identification of Vehicle Solids From Solvent-Reducible Paints

    E105 Practice for Probability Sampling of Materials

    E131 Terminology Relating to Molecular Spectroscopy


    Referencing This Standard

    DOI: 10.1520/D2743-68R10

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM D2743-68(2010), Standard Practices for Uniformity of Traffic Paint Vehicle Solids by Spectroscopy and Gas Chromatography (Withdrawn 2015), ASTM International, West Conshohocken, PA, 2010, www.astm.org

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