Patent ID: 6527983
Filing Date: 2003-03-04
Classification: C02F,Y10S

Abstract:
A composition for inhibiting barium scale formation in water comprising an aqueous solution having a phosphonate dissolved therein in a quantity effective to inhibit barium scale formation, said phosphonate having the formula: whereinZ=â€”CHR1PO3R2 R=H, CH3, C2H5 or M R1=H, CH3, CR3, C6H5, SO3H2 M=alkali metal or ammonium ion n is a number in the range 2 to 4, m is a number in the range 2 to 4, a is a number in the range 2 to 6, b is a number in the range 2 to 10, x is a number in the range 0 to 6, and y is a number in the range 1 to 6 provided that at least one of n, b or m is greater than 2.