AATCC 161:2018 pdf download.Color Change of Disperse Dyes Caused by Metals,with and without Chelating Agent
4. Safety Precautions
NOTE: These safety precautions are for information purposes only. The precautions are ancillary to the testing procedures and are not intended to he all inclusive. It is the user’s responsibility to use safe and proper techniques in handling materials in this test method. Manufacturers MUST be consulted for specific details such as material safety data sheets and other manufacturer’s recommendalions. All OSHA standards and rules must also be consulted and followed.
4.1 Good laboratory practices should be followed. Wear safety glasses in laboratory areas.
4.2 Pressurized dyeing equipment is required for some dyeing. Trained personnel should exercise care and follow the equipment manufacturer’s instructions for use and safety precautions.
4.3 All chemicals should be handled with care.
4.4 In preparing, dispensing and ban-dung acetic acid and phosphoric acid, use chemical goggles or face shield, impervious gloves and an impervious apron. Concentrated acids should be handled only in an adequately ventilated laboratory hood. CAUTION: Always add acid to water.
4.5 Carriers vary in toxicity depending on type. Read vendors technical data, SDS and/or product label for contents and/or OSIIA hazard classification.
4.6 An eyewash/safety shower should be located nearby and a high efficiency particulate respirator with a full facepiece should be readily available for emergency use.
4.7 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 www.osha.gov for latest version].
5. Uses and Limitations
5.1 Accurate results and expected shade changes depend on the metal dye and carrier used, as well as close control of all dyeing parameters.
5.2 Extraneous metal contamination can give misleading results. Use clean fabrics, distilled water, and rinse the dye containers with a 10% phosphoric acid solution followed by a distilled water rinse.
5.3 To avoid erroneous conclusions. test conditions must be established with dyes of known metal sensitivity to verify that the expected shade change can be obtained. Some samples of control dyes or carriers, or certain dyeing conditions. may not produce the expected shade change.
5.4 This test method is not intended for use with disperse dyes in combination with other dye classes that may contain metal complexes potentially damaged by chelating agents.AATCC 161 pdf download.