Citrate containing deicing compositions with improved eutectic temperatures
Deicing compositions are described for reducing an amount of ice formed on a surface. The deicing compositions may include about 1 wt. % to about 15 wt. % of a salt of citric acid. The compositions may further include about 23 wt. % to about 28 wt. % sodium chloride when the deicing composition forms an aqueous solution.
1. A deicing composition to reduce an amount of ice formed on a surface, the composition consisting of:
about 1 wt. % to about 15 wt. % of a salt of citric acid;
about 23 wt. % to about 28 wt. % sodium chloride when the deicing composition forms an aqueous solution; and
water.
2. The deicing composition of claim 1 , wherein the salt of citric acid is a hydrate of sodium citrate.
3. The deicing composition of claim 2 , wherein the hydrate of sodium citrate is sodium citrate dihydrate.
4. The deicing composition of claim 1 , wherein the aqueous solution form of the deicing composition has a eutectic point of less than −6° F.
5. The deicing composition of claim 1 , wherein the aqueous solution form of the deicing composition has a eutectic point of about −15° F.
6. The deicing composition of claim 1 , wherein the deicing composition consists of:
about 1 wt. % to about 10 wt. % of the salt of citric acid;
about 23 wt. % to about 28 wt. % sodium chloride when the deicing composition forms an aqueous solution; and
water.
7. The deicing composition of claim 1 , wherein the deicing composition consists of:
about 1 wt. % to about 7 wt. % of the salt of citric acid;
about 23 wt. % to about 28 wt. % sodium chloride when the deicing composition forms an aqueous solution; and
water.
8. The deicing composition of claim 1 , wherein the composition has a reduced corrosion rate of about 70% or more compared to an aqueous solution of pure sodium chloride at an equivalent sodium chloride concentration.