Acid sanitizing and cleaning compositions containing protonated carboxylic acids

A dilutable acid sanitizing and/or cleaning concentrate composition comprising

• about 0.25 wt-% to about 10 wt-% of the concentrate of at least one C6 to C10 fatty acid or mixture thereof;
• about 5 wt-% to about 50 wt-% of the concentrate of a C1 to C4 weak carboxylic acid;
• about 0 wt-% to about 40 wt-% of the concentrate phosphoric acid;
• about 5 wt-% to about 50 wt-% of the concentrate nitric acid;
• and
• about 0.05 wt-% to about 5 wt-% of the concentrate urea;
• with the proviso that the concentration of nitric acid and phosphoric acid does not exceed about 50 wt-% of the concentrate.

A cleaning composition comprising:

• a) about 0.5 wt-% to about 10 wt-% of at least one short chain fatty acid;
• b) 0 wt-% to about 40 wt-% phosphoric acid;
• c) about 5 wt-% to about 50 wt-% nitric acid;
• d) about 0.5 wt-% to about 50 wt-% of at least one surfactant;
• and
• e) about 5 wt-% to about 50 wt-% of the concentrate of a C1 to C4 weak carboxylic acid;
• with the proviso that the concentration of nitric acid and phosphoric acid does not exceed about 50 wt-% of the concentrate.

A sanitizing and/or cleaning composition comprising:

• a) 1 part of at least one aliphatic short chain antimicrobially effective C5 to C14 fatty acid or mixture thereof;
• b) about 1.7 to about 4.2 parts of at least one weak C1 to C4 carboxylic acid;
• and
• c) about 1.7 to about 4.2 parts of a strong acid which is nitric acid or a mixture of nitric and phosphoric acids.