1.1These test methods cover procedures used in determining the ash content of adhesives. This standard is intended as a replacement for Method 4032.1 of Federal Test Method Standard 175B, “Adhesives: Methods of Testing.”
1.2Two test methods are used:
1.2.1Test Method Ais used for a starch adhesive or other type glue, where there is no danger from the non-volatile content forming a rubbery mass when ignited.
1.2.2Test Method Bemploys nitric acid to avoid the non-volatile residue being transformed into a viscous foam when ignited.
1.3These methods are not applicable to adhesives containing decomposable salts such as zinc chloride.
1.4The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5This 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. For a specific hazard statement, see 9.2.3.