Patent ID: 8771542

Claim:
A heat transfer fluid, comprising: less than or equal to 90 weight percent water; 1 to 99 weight percent alcohol; 0.01 to 10 weight percent of a hydroxylated carboxylic acid of formula (I): (OH) x (R 1 )(COOH) y wherein x is 2 to 10, y is 3 to 10, and R 1 is a C 2-50 aliphatic group, a C 6-50 aromatic group, or a combination thereof; wherein the hydroxylated carboxylic acid comprises the hydroxylated carboxylic acid, an ester thereof, a salt thereof, an anhydride thereof, or a combination thereof and wherein weight percent is based on the total weight of the heat transfer fluid; and wherein the heat transfer fluid is free of silicates.