Test Method 161-2012
Chelating Agents: Disperse Dye Shade Change
Caused by Metals; Control of
in 1983 by AATCC Committee RA90
Purpose and Scope
This test method provides a laboratory procedure for:
the effectiveness of chelating agents in disperse dyebaths for inactivating heavy
metals which can cause shade change.
1.1.2 Evaluating the sensitivity
of disperse dyes to metal induced shade change during dyeing.
The effectiveness of chelating agents in sequestering metals in a dyebath, thereby
preventing metal-induced shade change, is determined by the protocol in Fig. 1.
2.2 Metal sensitivity of disperse dyes is determined by comparing control
dyes and test dyes by a shown protocol.
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