A method of preventing contact allergies includes using at least one amphoteric chelating agent which includes a complex based on aluminium and on ethylenediaminetetraacetic acid or the trisodium salt thereof, having the general formula [Al(Y)Bn]c′Dc with B being OH−, BO2− or H+, Y being a tetracarboxylate which can be protonated four times to form ethylenediaminetetraacetic acid, n being an integer equal to 0, 1, 2 or 3, D being a counterion, preferably Na+, c being an integer equal to 0, 1, 2 or 3 and c′ being a relative number having the same absolute value as c. A device, a part of which includes the amphoteric chelating agent, is also described.
                            一种预防接触过敏的方法包括使用至少一种两性
螯合剂,其中包括一种基于铝和
乙二胺四乙酸或其三钠盐的络合物,其通式为[Al(Y)Bn]c′Dc,其中B为OH-、
BO2-或H+、Y为四
羧酸,可质子化四次形成
乙二胺四乙酸,n为等于0、1、2或3的整数,D为反离子,最好为Na+,c为等于0、1、2或3的整数,c′为与c的绝对值相同的相对数。还描述了一种装置,其一部分包括两性
螯合剂。