Compound for removing alkaline earth metal scale deposits and si

Details Compound for removing alkaline earth metal scale deposits and si Compound for removing alkaline earth metal scale deposits and si

1996-08-14

1998-06-09

McAvoy, Ellen M.

Compositions

Water-softening or purifying or scale-inhibiting agents

Plant or organic material containing

252 80, 252 82, 252181, 210698, 134 3, C02F 510, C02F 500

Patent

active

057628211

ABSTRACT:
Alkaline earth metal scales, particularly barium sulfate and strontium sulfate, and silica-based scales, particularly potassium fluorosilicate, are removed from industrial processing equipment, tubular goods, and other scaled materials with a composition comprising sufficient potassium base to provide an overall system pH of between about 12.0 to about 14.0, a polyaminocarboxylic acid, preferably EDTA, a hydroxycarboxylic acid synergist, a pH buffering agent, a wetting agent, and optionally a sodium base.

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