Cortec VpCI®-M-605PS | Chloride Corrosion Protection | 50 Lbs M-605 PS are corrosion inhibitors designed specifically as deicing additives to prevent corrosion due to chlorides.  M-605 PS protects both ferrous and aluminum-based alloys. M-605 PS contain no chromate, nitrite, or phosphate inhibitors. These products conform to Pacific Northwest States (PNS) Department of Transportation requirements for additives to deicers and pass their corrosion tests when added to a deicer at a...