N-(2-hydroxyethyl)-n-bis (methylenephosphonic acid) and...

Details N-(2-hydroxyethyl)-n-bis (methylenephosphonic acid) and... N-(2-hydroxyethyl)-n-bis (methylenephosphonic acid) and...

C - Chemistry, Metallurgy

02

F

C02F 5/12 (2006.01) C02F 5/14 (2006.01) C07F 9/38 (2006.01)

Patent

CA 2092492

2811H C-1573 TITLE OF THE INVENTION N-(2-hYDROXYETHYL)-N-BIS(METHYLENEPHOSPHONIC ACID) AND CORRESPONDING N-OXIDE THEREOF FOR HIGH pH SCALE CONTROL ABSTRACT OF THE DISCLOSURE N-(2-hydroxyethyl)-N-bis(methylenephosphonic acid) and corresponding N-oxide thereof possess high calcium tolerance and have been found to give excellent inhibition of the formation, deposition and adherence of scale-forming salts, especially calcium carbonate, under severe conditions which include elevated pH, high dissolved solids content, and high saturation levels of calcium carbonate.

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