Acidic aqueous solution containing a chelating agent and the use thereof
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United States of America Patent
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Oct 31, 2017
Grant Date -
Nov 4, 2010
app pub date -
Oct 10, 2008
filing date -
Jan 9, 2008
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Abstract
An acidic aqueous solution containing a chelating agent and an acid, wherein the chelating agent is glutamic acid N,N-diacetic acid (GLDA) or a salt thereof, and wherein the amount of GLDA or the salt thereof is at least 10 wt %, based on the weight of the aqueous solution, and to the use thereof as an oilfield chemical, in descaling processes, or in processes in which highly concentrated aqueous acids are used, such as cleaning processes or plating processes.
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