Standard Test Method for Determining Formaldehyde Levels from Wood Products Using a Desiccator

Importancia y uso:

3.1 Limitations have been established on formaldehyde emission levels for wood panel building products made with urea-formaldehyde adhesives and permanently installed in homes or used as components in kitchen cabinets and for similar industrial products. This test method is used in conjunction with the test method referenced by HUD Rules and Regulations 24 CFR 3280 for manufactured housing, California Air Resources Board (CARB) regulation 93120, EPA TSCA Title VI 40 CFR Section 770, and by Minnesota Statutes Section 144.495 for housing units and building materials. This test method provides a means of testing small-size samples to determine formaldehyde emission potential.

3.2 This test method incorporates a desiccator, with the desiccant removed, having a 250 mm (10 in.) inside diameter and a volume of approximately 10.5 L (641 in.³) with the desiccator lid in place. Conditions controlled in the procedure are as follows:

3.2.1 Conditioning of panel products prior to testing,

3.2.2 Specified number, size, and edge sealing of wood specimens to be placed in the desiccator,

3.2.3 Test desiccator temperature, and

3.2.4 Samples from the 25 mL distilled water collection medium in the petri dish bottom are analyzed for formaldehyde at the end of a 2-h period in the closed desiccator.

3.3 This test method employs a single set of environmental conditions to assess formaldehyde emission potential from certain wood products. When the relationship between desiccator test values and large-chamber test values are to be determined, the values for the specific wood panel product type shall be plotted. This test method does allow a comparison of formaldehyde levels from different products for the same use.

3.3.1 Care must be exercised in the extension of the results to actual formaldehyde emission from products under actual use conditions.

Subcomité:

D07.03

Volúmen:

04.10

Número ICS:

71.100.50 (Wood-protecting chemicals)

Palabras clave:

air-borne; chromotropic acid; formaldehyde levels; small-scale; wood products ;