ASTM WK40293

    New Test Method for Estimating Chemical Emissions from Spray Polyurethane Foam (SPF) Insulation Using Micro-Scale Environmental Test Chambers

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    Developed by Subcommittee: D22.05 | Committee D22 | Contact Staff Manager


    1. Scope

    1.1 This practice describes the procedures to collect chemical emissions from specimens of spray polyurethane foam (SPF) insulation samples using a micro-scale environmental chamber apparatus. The procedure allows for estimating emissions of SPF products for vapor-phase volatile organic compounds (VOCs) such as blowing agents, formaldehyde, and other carbonyl compounds and semivolatile organic compounds (SVOCs) such as amine catalysts, flame retardants, and methylene diphenyl diisocyanate (MDI). A specialized micro-scale chamber and procedures to minimize losses from wall adhesion are described for collecting emissions of MDI. 1.2 The emissions data from this practice can be used to assess the impact on indoor air quality when the SPF material is installed in residential or commercial buildings. Such data are useful in comparing product formulations or establishing re-entry or re-occupancy times after the product has been installed. 1.3 This practice is usually performed on SPF samples that were prepared as described in Practice D7859. SPF insulation samples collected from buildings may also be evaluated with this practice; however, evaluating data from field investigation studies are beyond the scope of this practice. 1.4 This practice is intended to complement, not replace, reference methods for measuring chemical emissions [for example, small-scale chamber tests (Guide D5116) and emission cell tests (Practice D7143)]; however, these standards may not adequately address the chamber wall adhesion effects of the SVOCs that are used in SPF insulation. 1.5 Compatible material/product types that may be tested in the micro-scale chamber apparatus include both open-cell and closed-cell SPF insulation. Both high- and low-pressure formulations can be tested with this practice. Other rigid polyurethane (PUR) and polyisocyanurate (PIR) insulation products may be evaluated for emissions using the procedures described in this practice; however, the procedure was primarily developed for SPF products. 1.6 The micro-scale chamber is normally operated at ambient temperature, but can be operated at a moderately elevated temperature up to 60 oC to simulate warm temperatures in attics or wall cavities. 1.7 Gas sample collection and chemical analysis are dependent upon the nature of the compounds targeted and are beyond the scope of this practice. However, applicable procedures are described in WK40292 Test Method for Analysis of VOCs and SVOCs for SPF Emissions, Practice D6196 for selection of sorbent tubes, and Test Method D 5197 for analysis of formaldehyde and other carbonyl compounds. 1.8 The values stated in SI units are to be regarded as the standard. No other units of measure are used. 1.9 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.

    Currently, there are no standardized test methods that adequately address measuring the chemical emissions of SPF insulation products. This standard will address that need in conjunction with Work Item WK30960 Practice for Spraying, Sampling, Packaging, and Test Specimen Preparation of Spray Polyurethane Foam (SPF) Insulation Samples for Environmental Chamber Emissions Testing. The standard may be used by product manufacturers, air quality laboratories, regulatory agencies, and so forth.


    spray polyurethane foam; SPF; insulation; emissions; indoor air quality; semi-volatile organic compounds; SVOCs; volatile organic compounds; VOCs

    The title and scope are in draft form and are under development within this ASTM Committee.

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    Work Item Status

    Date Initiated:

    Technical Contact:
    John Sebroski

    Draft Under Development