EcoFog® VpCI®-309 Nano, Patent Pending Submicron Corrosion Inhibiting VpCI® Powder


EcoFog VpCI-309 Nano is a Vapor phase Corrosion Inhibitor VpCI powder in submicron particles. It is particularly designed for corrosion protection of ferrous metals in hardto-reach recessed areas, interior cavities, and voids.


Tiny particles have many interesting properties. They diffuse faster as diffusion coefficient is inversely proportional to the particle size (Stokes Einstein Equation).
They travel longer distances because they possess greater buoyancy and smaller gravity. They have much larger specific surface areas compared to larger particles of the same mass, enabling greater coverage as well as better sublimation.

Due to its submicron particle size, EcoFog VpCI-309 Nano offers VpCI protection with unique physicochemical advantages, making it an extremely efficient dry method to treat hard-to-reach spaces within an enclosed space. The VpCI vaporizes and adsorbs on all metal surfaces reaching all exposed areas including recessed sections and interior cavities.


• VpCI material in submicron crystal particles
• Greater specific surface area for better sublimation and better VpCI protection
• Improved performance for long distance fogging applications
• Does not contain silicates, phosphates, nitrites, or heavy metals
• Provides up to 24 months of continuous protection
• Provides protection to ferrous metals and aluminum
• Adsorbed VpCI material forms protective barrier layer
• If the VpCI layer is disturbed by moisture or opening of the enclosed space, the barrier layer is replenished (self-healing) by continuous vapor redespostion of remaining VpCI powder
• Vapor phase inhibiting action protects inaccessible and recessed surfaces
• Prevents further corrosion of pre-coated and painted surfaces
• Easy to apply
• Little or no surface preparation is required
• Protected products can be shipped to customers without removing the powder
• When required, powder can be removed by air gun or water rinse
• Meets or exceeds testing requirements of MIL 1-22110C
• D50 ORAL: 2100mg/kg of body weight


• Tubular structures, pipes, vessels with hard-to-reach areas
• Interior of suspension bridge cables
• Internal surfaces of compressors, turbines, engines, tanks, boilers, and heat exchangers
• Dry lay-up of closed circuit cooling systems
• Equipment protection after hydrostatic testing
• Parts, components, and completed assemblies during shipping and storage


Apply powder by dusting, fogging, or sprinkling. After application simply cover, close, or seal the interior cavity or void.Fogging is easily achieved with a low pressure air hoseand sandblast cup or by inverting a wet/dry vacuum. Large conventional sandblasting systems can also be used.


0.3-0.5 oz./ft³ (300-500 g/m³)


When required, EcoFog VpCI-309 Nano can be removed by using a low pressure air gun or by a water rinse.


EcoFog VpCI-309 Nano is available in 40lb (18.1Kg) sealed, foil-lined drums. Store in a sealed container in a dry warehouse avoiding direct exposure to sunlight, with temperatures not exceeding 122°F (50°C).


• Carbon steel
• Stainless steel
• Aluminum


Appearance: White to off-white powder
pH: 6.5-8 (1% aqueous)
NVC: 96-100%


• Caking of powder may occur when it is exposed to moisture and then dried. The likelihood of caking increases when the powder is exposed to high heat ormultiple wet/dry cycles. When the powder gets caked, baked, or hardened, mechanical removal or aggressive acid cleaning may be required. To avoid caking, powder should be applied evenly and at appropriate dosage.
• Powder is not soluble in hydrocarbon fluids. Rinse powder from vessels before adding hydrocarbon fluids
• Powder does not protect yellow metals (though it is not harmful to them)
• Powder should be removed from surface before welding or other high temperature processing
• Exercise general caution regarding handling of fine powder materials.