| 摘要 |
<p>In a machine diswahsing operation the risk of metal corrosion, especially of stainless steel to pitting corrosion, is significantly reduced by using a compound of formula (I): HOOC-(CH2)m-(CX1X2)n-(CH2)y-COOH, wherein m is from 0-1, n is from 0-2 and y is from 0-1; and X1 and X2 represent each individually H, OH, NH2, COOH, C1-C6 alkyl or alkoxy group, NR2 or COOR, wherein R is C1-C6 alkyl or the water-soluble salts thereof, with the proviso that if m, n and y are 1, then CX1X2 is not C(OH) (COOH). The corrosion inhibiting compound may be added as ingredient of a machine dishwashing composition or as ingredient of a rinse aid composition.</p> |
