VpCI®-649 / VpCI®-649 MF / VpCI®-649 Winterized


VpCI®-649 is a unique concentrated liquid formulation that protects ferrous and non-ferrous metals from corrosive solutions. In addition, this product is designed to provide long-term protection in fresh water and glycol closed loop systems.


VpCI®-649 combines contact and volatile corrosion inhibitors along with anti-scalants in a formulation that does not contain nitrites, phosphates or chromates. This product helps solve the problem of disposal, particularly for large quantities of water. VpCI®-649 contains a molybdate tracer. VpCI®-649 MF is molybdate free, and contains a PTSA tracer for easy detection. VpCI®-649 is also available in a cold weather version, VpCI®-649 Winterized for the convenience of storage in cold temperatures. VpCI®-649 Winterized provides freezing protection during product storage, it does not provide freezing protection to the diluted VpCI®- 649 Winterized water solutions.


• Closed loop cooling systems
• Fire extinguishing system dry layup
• Hydrostatic testing of pipelines, casings, tanks, and valves
• Packer fluid additive
• Cooling tower layup


• Effective for a broad range of applications to stop aggressive corrosion in systems containing fresh water, glycol coolants, etc.
• Vapor phase action provides protection to areas that contact inhibitors cannot reach
• Contains an acrylic polymer to prevent scale formation
• Readily water-soluble liquid for easy application
• Protects copper, steel, galvanized steel, and aluminum
• Effective in low dosages
• Does not contain free amines


*These are general dosing guidelines and may not be suitable for every application. Please contact DEYAP Technical Service for specific dosage information.

Detection: Concentration of VpCI®-649 can be monitored via molybdate tracer, pH, or refractometer. Concentration of VpCI®- 649 MF can be monitored via pH, refractometry, or PTSA. Contact DEYAP Technical Service for more information on monitoring product concentration..


VpCI®-649 & VpCI®-649 MF

Appearance: Amber Liquid
Density: 9.5-9.7 lb/gal (1.14-1.16 kg/L)
Type: Water-based
pH: 9.1-9.6 (Neat)
Freeze Point: 7 to 10°F (-14 to -12°C)

VpCI®-649 Winterized
Carrier: Water + Propylene glycol
Density: 9.3-9.7 lb/gal (1.11-1.16 kg/L)
pH: 9.1-9.6 (neat)
Freeze Point: -36.4 F (-38  C)





The PTSA tracer used in VpCI®-649 MF degrades with exposure to light. Solutions of VpCI®-649 MF must be sheltered from light to retain PTSA tracer. If PTSA degrades, the concentration can still be monitored via a titration. Contact Cortec® Technical Service for more information.


VpCI®-649 is available in 5 gallon (19 liter) pails, 55 gallon (208 liter) drums, liquid totes, and bulk.
To ensure best product performance, store in original packaging, indoors, and out of direct sunlight at 40-100  F (4-38 C).
Shelf life: 2 years