Cobratec

Description

[PMC Specialties Group, Westlake, Ohio] A series of triazole-based corrosion inhibitors. Cobratec products bind to copper ions thus inhibits other reactions. Their presence also eliminates copper deposition on other surfaces. Cobratec 99 is now Cobratec BZ

Product	Metals Protected	Composition	Form	Comments
COBRATEC® BZ	Copper	Benzotriazole	Solid, off white flake	Solids provide the highest level of inhibition, but can be difficult to handle
COBRATEC® TT100	Copper	Tolytriazole	Solid, Off white	Solids provide the highest level of inhibition, but can be difficult to handle
COBRATEC® CBT	Copper	Carbobenzotriazole	Solid, crystalline powder	Solids provide the highest level of inhibition, but can be difficult to handle
COBRATEC® TT85	Copper	Sodium Tolyltriazole	Solid, White powder	Solids provide the highest level of inhibition, but can be difficult to handle
COBRATEC® TT50S	Copper	Sodium Tolyltriazole	Amber alkaline water solution	Convenient aqueous solution; widely used in water treatment and engine coolants, forms alkaline salt
COBRATEC® TT55K	Copper	Potassium Tolyltriazole	Amber alkaline water solution	Convenient aqueous solution; widely used in water treatment and engine coolants, forms alkaline salt
COBRATEC® 40S	Copper	Sodium Benzotriazole	Amber alkaline water solution	Convenient aqueous solution; widely used in water treatment and engine coolants, forms alkaline salt
COBRATEC® TT-25-EG	Copper	Tolyltriazole	Solid in ethylene glycol solvent	Convenient solvent solution; used in inks, flooring, paints, and direct copper treatments
COBRATEC® TT-35-G	Copper	Tolyltriazole	Solid in propylene glycol solvent	Convenient solvent solution; used in inks, flooring, paints, and direct copper treatments
COBRATEC® TT-35-I	Copper	Tolyltriazole	Solid in Isopropanol solvent	Convenient solvent solution; used in inks, flooring, paints, and direct copper treatments
COBRATEC® TT-40-DG	Copper	Tolyltriazole	Solid in diethylene glycol solvent	Convenient solvent solution; used in inks, flooring, paints, and direct copper treatments
COBRATEC® TT-50-A	Copper	Tolyltriazole	Solid in triethanolamine solvent	Convenient solvent solution; used in inks, flooring, paints, and direct copper treatments
COBRATEC® 20-EG	Copper	Solid in ethylene glycol solvent	Benzotriazole	Convenient solvent solution; used in inks, flooring, paints, and direct copper treatments
COBRATEC® 35-G	Copper	Solid in propylene glycol solvent	Benzotriazole	Convenient solvent solution; used in inks, flooring, paints, and direct copper treatments
COBRATEC® 45-I	Copper	Solid in isopropanol solvent	Benzotriazole	Convenient solvent solution; used in inks, flooring, paints, and direct copper treatments
COBRATEC® 928	Copper, steel, aluminum, copper alloys, silver and cobalt	Liquid with 90% solids	Multiple azoles	Liquid provides ease of handling, no-caustic, non-flammable, can reduce cobalt leaching
COBRATEC® 937	Copper, and some steel	Liquid with 90% solids	Multiple azoles	Liquid provides ease of handling, no-caustic, non-flammable, can replace Cobratec-BZ for many uses
COBRATEC® 911S	Copper, steel, aluminum, copper alloys, silver and cobalt	Polyolester oil with 40% solids		Can replace CO99 in many uses

Resources and Citations

• PMC Specialties: Cobratec
• R.Organ, "The Corrosion of Tin, Copper, Iron and Steel and Lead" in Preservation and Conservation: Principles and Practices, Preservation Press, Washington DC, 1976, p. 249.