AATCC 112-2020 Test Method for Formaldehyde Release from Fabric: Sealed Jar.
3.1 formaldehyde release, n.—That formaldehyde exuded from textiles under the accelerated storage conditions of this test, including that which is free (un- bound or occluded) from unreacted chemicals, or from finish degradation as a result of this test.
3.2 free formaldehyde, n.—Formal- dehyde that is not bonded to a finish or a fabric is considered to be free formaldehyde. In this form, formaldehyde can be readily extracted from the fabric by immersion in water.
3.3 hydrolyzed formaldehyde, n— Although originally part of a larger chemical structure, such as a crosslinking reactant, during the course of this test the formaldehyde is cleaved from the larger molecule and dissolved into water.
4. Safety Precautions NOTE: These safety precautions are for information purposes only. The pre- cautions are ancillary to the testing procedures and are not intended to be all inclusive. It is the user’s responsibility to use safe and proper techniques in handling materials in this test method. Manufac- turers MUST be consulted for specific details such as material safety data sheets and other manufacturer’s recommendations. All OSHA standards and rules must also be consulted and followed.
4.1 Good laboratory practice should be followed. Wear safety glasses in all labo- ratory areas.
4.2 When handling glacial acetic acid to prepare Nash reagent, use chemical goggles or face shield, impervious gloves and an impervious apron during preparation. Concentrated acids should be han- dled only in an adequately ventilated laboratory hood. CAUTION: Always add acid to water.
4.3 Formaldehyde is a sensory irritant and potential sensitizer. Its chronic toxic- ity has not been fully established. Use in an adequately ventilated laboratory hood. Avoid inhalation or skin contact. Use chemical goggles or face shield, impervi- ous gloves and an impervious apron when working with formaldehyde (see 8.1).
4.4 An eyewash/safety shower should be located nearby and a self-contained breathing apparatus should be readily available for emergency use.
4.5 Exposure to chemicals used in this procedure must be controlled at or below levels set by governmental authorities (e.g., Occupational Safety and Health Administration’s [OSHA] permissible exposure limits [PEL] as found in 29 CFR 1910.1000; see web site: www.osha.gov for latest version). In addition, the American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Values (TLVs) comprised of time weighted averages (TLV- TWA), short term exposure limits (TLV- STEL) and ceiling limits (TLV-C) are recommended as a general guide for air contaminant exposure which should be met (see 13.7).AATCC 112 pdf download.