Patent ID: 7270767

Claim:
A deicing composition having a tailorable biochemical oxygen demand (BOD), said composition comprising: a) at least one first freezing point depressant (FPD) that is non-toxic, biodegradable and has a first 5 day BOD value, the at least one first FPD selected from the group consisting of triethylene glycol and tetraethylene glycol; b) at least one second FPD that is non-toxic and biodegradable, and has a 5 day BOD value greater than the 5 day BOD of the first FPD, the at least one second FPD selected from the group consisting of glycerol, propylene glycol, and 1,3 butanediol; and c) at least one surfactant, wherein the surfactant is non-ionic, non-toxic and biodegradable; wherein the first FPD of (a) and the second FPD of (b) are present in a ratio ranging from about 3:1 to about 1:3.