VpCI®-337 / GE / Winterized


VpCI®-337 is a ready-to-use waterborne corrosion inhibitor used primarily for robust preservation of internal void spaces. Vapor phase Corrosion Inhibitors (VpCI®) in VpCI®-337 migrate to protect metal surfaces resulting in time and cost savings. When combined with labor-saving techniques, minimum amount of product can be used to protect large areas or volumes. VpCI-337 is effective on multiple metals.


VpCI®-337 is a combination of contact and vapor corrosion inhibitors, which allows a wide range of uses; from low-dose voidspace protection to steel coil edge spray. Pipes, tanks, and other equipment protected by VpCI®-337 are ready-for-use or commissioning, often without the need for removal*. VpCI®-337 is completely water-soluble allowing ease of use for pigging, purging, or other existing processes. No degreasing or stripping is necessary. The metal will retain a clean and rust-free surface. In most cases, the thin protective film will not affect paint processes, conductivity, appearance, or any other important property of metals or alloys. VpCI®-337 Winterized has a lower freezing point for the convenience of application and storage in cold temperatures.

VpCI®-337 GE is specially formulated to be used in systems that are sensitive to sodium and sulfer.
*Please review your application with Cortec® Technical Service prior to commissioning.



• Biodegradable (87% biodegradation in 28 days)* • Contains vapor and contact corrosion inhibitors which provide multi-metal corrosion protection
• Leaves a thin, self-healing film
• Ready-to-use
• Protection is immediate, convenient to apply, and easy to remove if required

*Biodegradability applies to VpCI®-337 only


• Pipe, spool, modules
• Void space protection
• Edge spray for coils
• Double wall spaces
• Complex internal cavities
• Deep storage of key assets


• Hot/cold-rolled steel
• Silicon steel
• Stainless steel
• Cast iron
• Zinc
• Aluminum
• Copper
• Brass



VpCI®-337/VpCI®-337 GE

Appearance: Clear to hazy amber liquid
Carrier: Water
Film Type: Thin, soft film
Flash Point:  >200 °F (93 °C)
Freeze Point: 32 °F (0 °C)
pH: 7.2-9.0 (neat)
Weight per Gallon: 8.7-8.9 lb/gal (1.04-1.06 kg/l)


VpCI®-337 Winterized

Appearance: Clear amber liquid
Carrier: Water + Propylene Glycol
Freeze Point: -47.2 °F (-44 °C)
pH: 7.0-8.6 (neat)
Weight per Gallon: 8.8-9.2 lb/gal (1.05-1.10 kg/l)

Note: Product may become hazy after a few days.


Mix thoroughly prior to application.

Fog or mist into containers, boxes, crates, and shrouded packages at a rate of 0.5-1.0 oz./ft3 (0.5-1.0L/m3 ) of enclosed space. Always spray VpCI®-337 uniformly within enclosure and allow direct accessof vapors to metal surfaces to be protected.

Please contact DEYAP Technical Service for specific dosing and equipment recommendations, and for application guidance.


VpCI®-337 and VpCI®-337 GE are packaged in 5 gallon (19 liter) plastic pails, 55 gallon (208 liter) metal drums, totes, and bulk.

Minimum storage temperature: 40 °F (4 °C)
Maximum storage temperature: 120 °F (49 °C)

VpCI®-337 Winterized is packaged in 5 gallon (19 liter) plastic pails, 55 gallon (208 liter) metal drums, totes, and bulk.

Minimum storage temperature: -40 °F (-40 °C)
Maximum storage temperature: 120 °F (49 °C)
Shelf life: 24 Months