Cortec VPCI 609 Corrosion Inhibiting Powder For Ferrous Metals


VpCI-609 is a water-soluble Vapor phase Corrosion Inhibitor (VpCI) powder for wet or dry corrosion protection of ferrous metals and aluminum.


• Provides liquid, vapor-phase, and interface protection (above the liquid level)
• Creates a monomolecular inhibiting layer on metal surface
• Provides up to 24 months of continuous protection
• Does not contain nitrites, phosphates, or heavy metals
• Vapor-phase inhibiting action protects inaccessible and recessed surfaces
• Protected products can be shipped to customers without removing powder
• If the VpCI layer is disturbed by moisture or the opening of an enclosed space, the layer is replenished by continuous vapor redeposition
• Little or no surface preparation is required
• Prevents future corrosion of precoated and painted surfaces
• VpCI layer typically does not need to be removed prior to processing or use
• If required, powder is easily removed by air gun or water flush
• Does not increase alkalinity
• Provides economical protection for very large applications.



• Tubular structures, pipes, and vessels
• Internal surfaces of compressors, turbines, engines, tanks, boilers, heat exchangers
• Steam condensate lines, closed circuit heating, and
cooling systems
• Equipment during and after hydrostatic testing
• Parts, components, and completed assemblies during shipping and storage
• Additive to shot-blasting media, wet blasting
• Additive to standing water
• Voids, cavities, and tanks

Product Details

Product Code(s) Packing Size
VPCI-609-5 Cortec VPCI 609 Corrosion Inhibiting Powder for Ferrous Metals (5lbs packet)
VPCI-609-50 Cortec VPCI 609 Corrosion Inhibiting Powder for Ferrous Metals (50lbs pail)


Metals Protected • Carbon steel
• Mild steel
• Stainless steel
• Other ferrous metals
• Aluminum
Dosage For powder application with average environmental conditions, use 0.3-0.5 ounce (8.5-14 grams) of VpCI609 per 1 cubic foot (28 liters) of enclosed space (300-500 g/m3). The dosage can be increased for more severe conditions. For aqueous applications with average environmental conditions, use 0.25% VpCI-609 by weight of water. The dosage can be increased for more severe conditions.
Typical Properties Appearance White crystaline powder
pH 6-7 (1% aqueous solution)
Solubility in water 15%
Density 38-39 lb/ft3 (0.61-0.63 kg/l)

Additional Information

Method of Application

Apply VpCI-609 in dry form by dusting, fogging, or sprinkling. Apply VpCI-609 in aqueous form by spray, brush, flush, or immersion. After application simply cover and close or seal the interior cavity or void. Fogging is easily achieved by using a low pressure air hose and sandblast cup. Large conventional sandblasting systems
can also be used.

Method of Removal

When required, VpCI-609/609S in powder form can beeasily removed by using a low pressure air gun or by a water rinse. Typically, if applied in aqueous form, the product does not require removal. If necessary, a simple water rinse or flush will suffice.

• Do not use on copper, copper-based alloys, and other soft yellow metals. Compatability with non-metalics should be evaluated.
• Caking of powder may occur when it is exposed to moisture and then dried. The likelihood of this is increased when powder is exposed to high heat and multipule wet/dry cycles. When powder gets caked, baked, and hardened it requires removal by mechanical means, or by aggresive acid clean. To avoid caking of powder do not over apply or unevenly disperse the dry powder. In aqueous applications make sure powder has been totally dissolved before using.
• Powder is not soluble in hydrocarbon fluids. Rinse powder from vessels before adding hydrocarbon fluid.
• Powder should be removed from the area on each side of weld before welding, or other high temperature processing.