This specification shall govern bidding on and supplying a chemical deicer containing sodium chloride as the main component with a corrosion inhibitor. The chemical deicers shall have a corrosion inhibitor that meets a corrosion percent effectiveness of eighty-five percent (85%) or lower. The corrosion percent effectiveness is based on the corrosion weight loss of salt and measured in mills, with salt having a corrosive percent effectiveness of one hundred percent (100%). The corrosion rate for all products approved in this price agreement shall be reduced by a minimum of fifteen percent (15%) when compared to the corrosion rate of salt (NaCl). Post adding of corrosion inhibitors or any other ingredients and splash mixing is unacceptable after the product has left the original manufacturing plant. A certified scale ticket shall accompany all shipments of chemical deicers, machine stamped, with both tare and gross weight indicated. The certified scale ticket shall be obtained at the nearest available location to the point of origin of the shipment. All invoices presented for payment of chemical deicers shall include the vehicle license number of the truck or tractor and trailer used to haul that particular load. The chemical deicer must not cake when mixed with sand or cinders in different proportions or when stored outside. Chemical deicer can be treated with Ferric Ferro-cyanide, also known as Prussian Blue, or Sodium Ferrocyanide of Soda (YPS) to prevent the deicer from caking. The amount of Prussian Blue added if required to prevent caking should be within 70 to 165 parts per million (ppm) equivalent to 0.33 to 1.14 pounds per ton of deicer. If YPS is used the amount added should be 50 to 250 ppm, equivalent to 0.1 to 0.5 pounds per ton of chemical deicer. If used, the presence of these products will not be assessed towards the total cyanide concentration when testing this product.
