Aviation fuels contain additives with “trade secret” ingredients. Aviation produced contrails’ effect on our climate is still not known after 60 years of flights. Dirty fuels produce dirty exhaust, however this is not geoengineering, this is copyright trumping public health concerns.
Jet Fuel Additive: Stadis 450 dinonylnaphthalene sulfonic acid, barium salt
“The most commonly used commercial turbine jet fuels today are named JET-A, JET-A1, and JET-B. All of these are kerosene type fuels except JET-B which is a kerosene-naphtha blend for colder climates [1, 2]. JET-A is used internationally and JET-A1 is available only in the US.
The US military primarily uses its own kerosene jet fuel, JP-8, which is similar to JET-A1 [11,2].
A number of chemical additives are used in these fuels including corrosion inhibitors, temperature stabilizers, detergents, and static electricity dissipators. Static dissipators are of particular importance to atmospheric aerosol and environmental research, due to their metal content and their widespread use in commercial and military jet fuel [17, 8]. Octel Starreon Stadis® 450 is a static dissipator, comprised of dinonylnapthalene sulfonic acid and other organic solvents, and according to the product MSDS (Material Safety Data Sheet), it contains two “trade secret” ingredients . Stadis 450 is the only approved anti-static additive for use in Air Force aviation fuels, including JP-8, JP-5, JET-A1, and JET-B .
Although the “trade secret” ingredients are well protected by the manufacturer, a recent study contracted by the EPA  and other sources strongly imply that these ingredients are salts of barium and/or calcium. The EPA classifies this dinonylnaphthalene sulfonic acid, barium salt as a “HPV” (High Production Volume) chemical, meaning it is “produced or imported into the United States in quantities of 1 million pounds or more per year .” This same study reports that “Based on the available toxicity results, dinonylnaphthalene sulfonic acid, barium salt appears to be the most biologically active member of the [dinonylnaphthalene] category .” It is hypothesized that jet exhaust aerosol  is responsible for cloud seeding, rainbow diffraction, and dichroism observed in persistent contrails . While “skeptics” may dismiss the very existence of persistent contrails, the phenomenon is widespread and commonly accepted among atmospheric scientists . The exact cause of aerosol cloud seeding has been the subject of endless debate, but it has been shown conclusively that the earth’s albedo, or its overall reflectivity, is increased by contrail aerosol (see chemtrails.cc sattelite imagery category).” (PDF) *** Continue