Engelhardt, Philip R. et al. published their patent in 1984 |CAS: 5301-96-2

The Article related to radiator antifreeze corrosion inhibitor, cooling water corrosion inhibitor, Nonferrous Metals and Alloys: Corrosion (If The Primary Interest Is In The Metal), Erosion, Cavitation, Tribology, and Oxidation and other aspects.Name: 4-(p-Tolyl)-1H-1,2,3-triazole

On October 18, 1984, Engelhardt, Philip R.; Ventura, Ederlyna M. published a patent.Name: 4-(p-Tolyl)-1H-1,2,3-triazole The title of the patent was Corrosion-preventing antifreeze solution. And the patent contained the following:

A corrosion-inhibiting soluble for cooling systems of engine radiators contains alc. such as ethylene glycol  [107-21-1] (antifreeze solution) and 1-10,000 ppm corrosion inhibitor such as saturated aliphatic dicarboxylic acid, preferably adipic acid  [124-04-9] or its water-soluble salt, inorganic phosphate and molybdate, especially Na2MoO4, nitrates, azoles, silicates, or their mixtures An aqueous antifreeze solution of ethylene glycol preferably contains a corrosion inhibitor solution of Na2MoO4 0.5-5, adipic acid 0.5-10, Na phosphate 5-75, and mixture of NaNO3, Na silicate, Na-2-mercaptobenzothiazole  [2492-26-4], and 1,2,3-tolyltriazole  [5301-96-2] 1-50 weight%. Thus, a corrosion inhibitor containing Na phosphate 66.66, adipic acid 6.47, Na2MoO4 3.88, Na2SiO3 7.76, NaNO3 7.76, 2-mercaptobenzothiazole 6.47, 1,2,3-tolyltriazole 1.44, and Na styrenesulfonate-maleic anhydride copolymer (dispersion agent) [9065-80-9] 1.56 parts was tested at 7713 ppm in aqueous 50 volume% ethylene glycol solution The corrosion after 7 wk for Cu, Ag braze, yellow brass, steel, cast iron, and Al casting was 2, 1.9, 1.2, 2, 7.5, and 0.6 mg, resp., which indicated excellent corrosion protection. The experimental process involved the reaction of 4-(p-Tolyl)-1H-1,2,3-triazole(cas: 5301-96-2).Name: 4-(p-Tolyl)-1H-1,2,3-triazole

The Article related to radiator antifreeze corrosion inhibitor, cooling water corrosion inhibitor, Nonferrous Metals and Alloys: Corrosion (If The Primary Interest Is In The Metal), Erosion, Cavitation, Tribology, and Oxidation and other aspects.Name: 4-(p-Tolyl)-1H-1,2,3-triazole

Referemce:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics