PRODUCT DESCRIPTION 

VpCI®-309 is a Vapor phase Corrosion Inhibitor powder for corrosion protection of ferrous metals in recessed areas, interior cavities, and voids. VpCI-309 provides an extremely efficient dry method to protect metals within an enclosed space. The VpCI® vaporizes and adsorbs on all metal surfaces reaching all exposed areas including recessed sections and interior cavities. VpCI®-309 SF, a silica-free version, is available upon request. 

FEATURES 

• Does not contain silicates, phosphates, nitrites, or heavy metals 

• Provides up to 24 months of continuous protection 

• Provides monomolecular inhibiting layer 

• 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 opening the enclosed space, the layer is replenished by continuous vapor redeposition 

• Little or no surface preparation is required 

• Prevents further corrosion of pre-coated and painted surfaces 

• Easy to apply 

• When required powder can be removed by air gun or water rinse

• Provides protection of aluminum, carbon steel, and steel alloys 

• Commercial equivalent to MIL I-22110C 

• LD50 ORAL: 2100mg/kg of body weight APPLICATIONS 

• Tubular structures, pipes, vessels, and turbines 

• 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 

• Segmental concrete bridge tendons/cables 

METHOD OF APPLICATION 

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 hose and sandblast cup or by inverting a wet/dry vaccuum. Large conventional sandblasting systems can also be used. Please contact Cortec® Technical Service for specific dosing, equipment recommendations, and for application guidance. 

DOSAGE 0.3-0.5 oz/ft3 (300-500 g/m3) 

METHOD OF REMOVAL 

When required, VpCI®-309/309 SF in powder form can be 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.

PACKAGING AND STORAGE 

VpCI-309 is available in 5 pound (2.3 kg), 50 pound (23 kg), and 100 pound (45 kg) lined drums. Store in a sealed container in a dry warehouse avoiding direct exposure to sunlight, with temperature not exceeding 150°F (65°C). Shelf life is up to 24 months. 

METALS PROTECTED 

• Carbon steel • Stainless steel  • Aluminum 

TYPICAL PROPERTIES 

VpCI®-309 Appearance White to off-white powder pH 6.5-8 (1% aqueous) Density 38-39 lb/ft3 (0.61-0.63 kg/L) VpCI®-309 SF Appearance White to off-white powder pH 6.5-8.0 (1% aqueous)