Efficient stabilizer in controlling self accelerated decomposition temperature of peroxycarboxylic acid compositions with mineral acids

A stabilized homogenous equilibrium peracid composition comprising:

• at least one of a straight or branched saturated aliphatic C2-C20 peroxycarboxylic acid;
• at least one of a straight or branched saturated aliphatic C2-C20 carboxylic acid;
• hydrogen peroxide;
• from about 12.5 wt-% to about 50 wt-% of sulfuric acid;
• and
• a peroxycarboxylic acid stabilizing agent, wherein the stabilizing agent is a picolinic acid or a compound having the following Formula (IA):
• wherein R1 is OH or NR1aR1b, wherein R1a and R1b are independently hydrogen or (C1-C6)alkyl;
• wherein R2 is OH or NR2aR2b, wherein R2a and R2b are independently hydrogen or (C1-C6)alkyl;
• wherein each R3 is independently (C1-C6)alkyl, (C2-C6)alkenyl or (C2-C6)alkynyl;
• and n is a number from zero to 3;
• or a salt thereof;
• or a compound having the following Formula (IB):
• wherein R1 is OH or NR1aR1b, wherein R1a and R1b are independently hydrogen or (C1-C6)alkyl;
• wherein R2 is OH or wherein R2a and R2b are independently hydrogen or (C1-C6)alkyl;
• wherein each R3 is independently (C1-C6)alkyl, (C2-C6)alkenyl or (C2-C6)alkynyl;
• and n is a number from zero to 3;
• or a salt thereof;
• and
• wherein a use solution of said composition has a pH of below about 4, wherein at least about 80% of the C2-C20 peroxycarboxylic acid activity is retained after storage of at least 30 days at about 50° C., and wherein the composition has a self-accelerating decomposition temperature (SADT) of at least about 45° C.