Compositions for dissolving metal sulfates

A composition for dissolving metal sulfates comprising an aqueous dispersion including:

• a component selected from the group consisting of (1) an organophosphorus compound which is a salt of a chelating agent, (2) other organophosphorus compounds, (3) carboxylic acids, and (4) mixtures thereof;
• sodium bicarbonate;
• a base;
• and
• a salt of a chelating agent when said component does not include (1) of said group, said composition being capable of dissolving at least about 75% by weight of said metal sulfates after about 0.5-3 hours.

A method of forming a composition comprising an aqueous dispersion for dissolving metal sulfates, said method comprising the steps of:

• from a mixture comprising:
• from about 0.1-10% by weight sodium bicarbonate, the percentage by weight being based upon the total weight of the composition taken as 100% by weight;
• a component selected from the group consisting of (1) an organophosphorus compound which is a salt of a chelating agent, (2) other organophosphorus compounds, (3) carboxylic acids, and (4) mixtures thereof;
• and
• when said component does not include (1) of said group, a salt of a chelating agent;
• and
• adding a quantity of a base to said mixture to form the dispersion, said composition being capable of dissolving at least 75% by weight of said metal sulfates after about 0.5-3 hours.