Formic acid is an inorganic salt that finds wide application as a de-icing and dust control agent. It is produced through the reaction of formic acid with limestone and yields an end product with the chemical formula Ca(HCOO)2. http://insightsmarketer.weebly.com/digital-endowments/calcium-formate-a-closer-look-at-the-role-of-glycerol-in-airline-de-icing-processes