The following is a list of chemicals used in the process of hydraulic fracturing. The list was compiled from publicly available sources by the Lock the Gate Alliance, an Australian community, industry and environmental group. Not all chemicals are used in every frack job, and each company uses different formulas for hydraulic fracturing.
Used as a solvent in the pharmaceutical industry.
Hazardous chemical class 3. Highly flammable. Harmful by inhalation and if swallowed. Irritating to eyes and skin.
Surfactant (used to
reduce surface tension).
Used in whiteboard
cleaners, liquid soaps, cosmetics and lacquers.
hemoglobinuria as well as histopathologic changes in the liver and kidney.
Acetic Acid. pH buffer (used to adjust pH).
Gives vinegar its taste.
Extremely corrosive and flammable. It requires special storage and handling considerations. Glacial acetic acid causes severe chemical burns to eyes and skin.
Used as a soil-repellent coating by the building
Includes methyl methacrylate, methacrylic acid, butyl acrilate and buthyl methacrylate, all toxic chemicals used in
Ammonium persulfate. Breaker. Used to reduce viscosity (turns a gel
Used in hair bleach, blot gels and glass cleaning products
Oxidizer with moderate oral toxicity. Airborne dust may be irritating to eyes, nose, lungs, throat and skin upon contact.
Boric Acid. Crosslinker to increase viscosity.
Used in antiseptics to treat cuts and fungal
infections (athlete’s foot).
Poison. Chronic poisoning occurs in those who are repeatedly exposed to boric acid. Once used to disinfect and treat wounds, patients who received such treatment repeatedly got sick, and some died.
Boric Oxide. Crosslinker to increase viscosity.
Used to produce high strength alloys, glasses and ceramics.
Causes severe irritation of upper respiratory tract with coughing, burns, breathing difficulty and possible coma. May cause kidney injury.
Disodium Octaborate Tetrahydrate. Gelling agent/Crosslinker to
Used as a fertilizer.
Affects the gastrointestinal tract, skin, vascular system and brain.
Hydrochloric Acid. Cleaning of the wellbore prior to fracking.
Used to clean swimming pool filters.
Inhalation of vapor can cause serious injury.
Ingestion may be fatal. Liquid can cause severe damage to skin and eyes. Threshold Limit Value — 5 ppm. Lethal to fish from 25 mg/l or more. Toxic for aquatic organisms due to pH shift.
Methanol. Surfactant. Used to aid gas flow.
A type of alcohol, can be used in wastewater
treatment and as an
Swallowing even small amounts has potential to cause blindness or death. Effects of sublethal doses may be nausea, headache, abdominal pain, vomiting and visual disturbances ranging from blurred vision to light
exposure by inhalation or absorption may cause systemic poisoning, brain disorders, impaired vision and blindness and worsen conditions such as emphysema or bronchitis.
Ethylene Glycol Monobutyl Ether.
Used in household
cleaners, fire-fighting foam and to degrease bowling pins and lanes.
Liquid and vapour are combustible. Harmful if inhaled, when in contact with skin and if swallowed. It is irritating to respiratory system. Causes eye irritation, affects central nervous system, blood and blood forming organs, kidneys, liver and lymphoid system.
Muriatic Acid. Used for cleaning the well bore.
Leather tanning and for cleaning.
Irritating and corrosive to living tissue. Brief
exposure in low levels produces irritation.
Exposure to higher levels can cause breathing
difficulties, narrowing of the bronchioles, blue colour of the skin,
accumulation of fluid in the lungs and death.
Potassium Chloride. Clay inhinbitor.
Used in making fertilizer, gas-welding flux, in
medicines and for lethal injections.
Large doses cause gastro-intestinal irritation, purging, weakness and circulatory problems.
Polydimethyldiallylammonium chloride. Clay control.
Flocculant in waste water treatment. Wetting agent, shampoo ingredient.
Avoid runoff into storm sewers and ditches.
Quaternary Polyamines. Clay control.
Used in wastewater
Corrosive, dangerous for the environment. Risk of serious damage to eyes. Very toxic to aquatic
organisms. Vapors may cause drowsiness and dizziness.
A component in glass,
pottery and detergents.
Eye irritation, blurred
vision, eye damage.
Used in paper-making, food processing, soap,
detergents and drain cleaners.
Causes severe skin and eye burns. May cause blindness, severe and permanent damage to gastro-intestinal tract
including burns, perforations. Inhalation may lead to chemical pneumonitis, pulmonary edema.
Causes severe irritation of, and possible chemical burns to upper respiratory tract — coughing, burns, breathing difficulty.
Tetrakis (hydroxymethyl) Phosphonium Sulfate. Antiseptic.
Used to elimate bacteria in water, petroleum.
Prolonged or repeated skin contact may cause dermatitis, liver and
Tetramethyl ammonium chloride. Clay control.
A salt of ammonia. Few common applications.
May be fatal if swallowed. Causes dizziness,
nausea, shortness of breath, severe hypotension, shock. A known
ganglionic blocking agent, causing vasodilation, and curare-like actions,
peripheral nerve damage, cardiac paralysis, dyspnea, effects, hypotension.