What chemicals can be found in fracking fluid?

A:

There are a number of chemicals which are routinely used in hydraulic fracturing. The following is a list of the chemicals used most often according to fracfocus.org. They are sorted alphabetically. Many are toxic.

2-Butoxyethanol
Acetaldehyde
Acetic Acid
Acetic Acid
Ammonium Persulfate
Borate Salts
Boric Acid
Calcium Chloride
Choline Chloride
Citric Acid
Copolymer of Acrylamide and Sodium Acrylate
Ethanol
Ethylene Glycol
Formic Acid
Glutaraldehyde
Guar Gum
Hydrochloric Acid
Hydrotreated Light Petroleum Distillate
Isopropanol
Isopropyl Alcohol
Lauryl Sulfate
Magnesium Oxide
Magnesium Peroxide
Methanol
Naphthalene
Petroleum Distillate
Phosphonic Acid Salt
Polyacrylamide
Polysaccharide Blend
Potassium Carbonate
Potassium Hydroxide
Potassium Metaborate
Quaternary Ammonium Chloride
Sodium Carbonate
Sodium Chloride
Sodium Erythorbate
Sodium Hydroxide
Sodium Polycarboxylate
Sodium Tetraborate
Tetrakis Hydroxymethyl-Phosphonium Sulfate
Tetramethyl ammonium chloride
Thioglycolic Acid
Triethanolamine Zirconate
Zirconium Complex