Ammonium tetrafluoroborate

104.84

105.037292

237-531-4

C945Z80O8X

1759|3077

DTXSID8065660

White powder, orthorhombic

1

1.67620

White Powder

1.871 g/cm³ @ Temp: 15 °C

230 °C

H2O: soluble ;soluble in ammonium hydroxide

Store below +30°C.

0.001 lb/sq inch at 100 deg F

High temperature produces toxic fluoride, nitrogen oxides and ammonia fumes

May explode in moist air

Odorless

Heat of sublimation: 144 BTU/lb= 80.2 cal/g= 3.36X10+5 J/kg

The white solid sublimes above 238°C. to form toxic fumes. The solid is water soluble.

Salts, Acidic

Acidic inorganic salts are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions.

Not flammable (USCG, 1999)

Corrosive to aluminum

8

UN 9088

3

36/37/38-34

26-36-45-36/37/39

BQ6100000

C

Warehouse ventilated, low temperature and dry

Corrosive/Moisture Sensitive

Moisture sensitive material.

P280-P305 + P351 + P338-P310

H290-H314

SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations.

Interaction of ... /hexafluorisopropylideneaminolithium/ with a range of chloro- and fluoro-derivatives of boron ... during warming to 25 °C tended to be violently exothermic in absence of solvent.|The trihalides react with water, lower alcohols, hydrogen sulfide, alkyl mercaptans, ammonia, primary and secondary amines, phosphine, and arsine, liberating hydrogen halide in each case. /Boron trihalides/|The boron halides react violently with ammonia. /Boron halides/|Boron halides react violently with water, and, particularly if there is a deficiency of water, a violent explosion may result. /Boron halides/|Boron halides are reduced by active metals, metal hydrides, and hydrogen. Reaction with the alkali and alkaline earth metals at elevated temperature yields elemental boron and the metal halide. /Boron halides/

USEPA/OWRS; Quality Criteria for Water 1986 Boron (1986) EPA 440/5-86-001

Behavior in Fire: Sublimes above 238°C yielding toxic fumes. (USCG, 1999)

|Danger|H290 (50%): May be corrosive to metals [Warning Corrosive to Metals]|P234, P260, P261, P264, P271, P280, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P321, P332+P313, P337+P313, P362, P363, P390, P403+P233, P404, P405, and P501|Aggregated GHS information provided by 78 companies from 7 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H319: Causes serious eye irritation [Warning Serious eye damage/eye irritation]|P260, P261, P264, P270, P271, P280, P304+P340, P305+P351+P338, P312, P314, P337+P313, P403+P233, P405, and P501

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. SPILL: Increase, in the downwind direction, as necessary, the isolation distance shown above. FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2016)

Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]: ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS. (ERG, 2016)

Mechanical filter respirator if dusty or misty; self-contained breathing apparatus if fuming. Rubber gloves; safety glasses (dust) or chemical goggles (mist); full, clean work clothing. (USCG, 1999)|Wear appropriate chemical protective gloves, boots and goggles.|/Use/ mechanical filter respirator if dusty or misty, self-contained breathing apparatus if fuming.

Material itself does not burn or burns with difficulty.

... May ... explode in moist air ... /Boranes/

Extinguish fire using agent suitable for type of surrounding fire.|Water spray will probably reduce fume and irritant gases.

Environmental considerations - land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. /SRP: If time permits, pits, ponds, lagoons, soak holes, or holding areas should be sealed with an impermeable flexible membrane liner./ Cover solids with a plastic sheet to prevent dissolving in rain or fire fighting water.

If material not involved in fire: Keep material out of water sources and sewers. Build dikes to contain flow as necessary.|Keep upwind. ... Avoid breathing vapors or dusts. Wash away any material which may have contacted the body with copious amounts of water or soap and water.|SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.

Vapor and Dust: irritating to eyes, nose, and throat.|... May produce irritation of the nasal mucous membranes, the respiratory tract, and eyes. /Boron compounds/

Persons in charge of vessels or facilities are required to notify the National Response Center (NRC) immediately, when there is a release of this designated hazardous substance, in an amount equal to or greater than its reportable quantity of 5000 lb or 2270 kg. The toll free number of the NRC is (800) 424-8802. The rule for determining when notification is required is stated in 40 CFR 302.4 (section IV. D.3.b).

highly toxic

Following daily oral intake of 6.4 mg sodium tetrafluoroborate by a volunteer for a period of 14 days, a daily average of 100% was excreted in the urine and 1.6% in the feces. The fluoride content of the volunteer's food was not determined. Sodium fluoroborate is therefore well absorbed, but the fluoride which enters the body is not stored. The authors attributed this to slow hydrolysis of the tetrafluoroborate ion. In another study with 3 volunteers and a study duration of 7 to 38 weeks, there were indications that fluoride which was absorbed in the form of sodium tetrafluoroborate was stored in the body. The amount was <10% of that absorbed into the bloodstream. /Sodium tetrafluoroborate/|In a further study... on the distribution of potassium tetrafluoroborate in various tissues, male albino rats (weighing 110 to 150 g; aged 11-13 weeks) were each iv injected with 1 umol 18F-labelled potassium tetrafluoroborate... . At 120 min after injection, the following relative specific activities (activity per gram of tissue/activity in serum) were determined: liver 0.29, spleen 0.37, kidney 0.60, lung 0.60, muscle 0.14, brain 0.03, femoral diaphysis 0.26, femoral epiphysis 0.29, incisors 0.27, cranial bone 0.27, cartilage 0.30. Further relative specific activities at 30, 120, and 240 min after injection were reported for serum/total injected dose as 1.75, 0.28, and 0.07, respectively, for muscle/serum as 0.14, 0.15, and 0.35, respectively, as well as for femoral epiphysis/serum as 0.35, 0.85, and 1.35, respectively, and for femoral epiphysis/femoral diaphysis as 1.0, 2.3, and 2.4, respectively. /Potassium tetrafluoroborate/|Rats (approx 200 g; 4 animals/group) were given a single ip injection of 5 ug 18F-labelled potassium tetrafluoroborate (it was not specified whether per kg bw or per rat). After 40, 60, 100, and 120 minutes, various organs were assessed for relative specific tetrafluoroborate activity (tissue/blood specific activity ratio). ...The highest activity was found in the thyroid gland, where it was 26 to 42 fold higher than in the other organs after 2 hours. Increases in dose to 50, 500, and 1000 ug potassium tetrafluoroborate did not increase the specific activity in the thyroid gland, but reduced it relative to the values found after administration of 5 ug, e.g. by about a factor of 20, 210 minutes after 1000 ug. /Potassium tetrafluoroborate/

INHALATION: May cause irritation of respiratory passages, nose bleeds, and nausea. EYES: May irritate. (USCG, 1999)

INHALATION: Remove to fresh air; if symptoms persist consult a physician. EYES: Wash with water for 15 minutes and get medical attention. INGESTION: Give 3 to 4 glasses of water and induce vomiting. Consult a physician. (USCG, 1999)

Maintain an open airway and assist ventilation if nescessary. treat coma, seizures, hypotension, and renal failure if they occur. There is no specific antidote. Administer activated charcoal (although boric acid is not well absorbed). Consider gastric lavage for large ingestions. /Boric acid, Borates, and Boron/|Hemodialysis is effective and is indicated after massive ingestions and for supportive care of renal failure. Peritoneal dialysishas not proved effective in enhancing elimination in infants. /Boric acid, Borates, and Boron/|In acute poisonings, if a large amount has been ingested and the patient is seen within one hour of exposure, gastrointestinal decontamination should be considered ... .It is important to keep in mind that vomiting and diarrhea are common, and severe poisoning may be associated with seizures. Therefore induction of emesis by syrup of ipecac is probably contraindicated in these exposures. Catharsis is not indicated if diarrhea is present. /Boric acid and Borates/|If ingestion of borate has been massive (several grams), or has extended over several days, administer intravenous glucose and electrolyte solutions to sustain urinary excretion of borate. Monitor fluid balance and serum electrolytes (including bicarbonate capacity ) regularly. Monitor cardiac status by ECG. Test the urine for proteins and cells to detect renal injury, and monitor serum concentration of borate. Metabolic acidosis may be treated with sodium bicarbonate. If shock develops, it may be necessary to infuse plasma or whole blood. Administer oxygen continuously. If oliguria (less than 25 to 30 mL urine per hour) occurs, intravenous fluids must be slowed or stopped to avoid overloading the circulation. Such patients should be referred to a center capable of providing intensive care for critically ill patients. /Boric acid and Borates/|For more Antidote and Emergency Treatment (Complete) data for AMMONIUM FLUOBORATE (7 total), please visit the HSDB record page.

/SIGNS AND SYMPTOMS/ Chronic effects: (from inhalation or ingestion), may cause fluorosis. Symptoms- weight loss, malaise, anemia, leukopenia, discoloration of teeth, osteosclerosis. /Hydrofluoric acid/|/SIGNS AND SYMPTOMS/ Contact of skin with anhydrous liquid produces severe burns that are felt immediately. Concentrated aqueous solution also cause early sensation of pain, but dilute solution may give no warning of injury. /Hydrofluoric acid/|/SIGNS AND SYMPTOMS/ All forms-dilute or concentrated solution or vapor of hydrofluoric acid (HF) ... cause severe burns. Inhalation of anhydrous HF or HF mists or vapors can cause severe respiratory tract irritation that may be fatal. /Hydrofluoric acid/|/SIGNS AND SYMPTOMS/ Acute effects: ...Inhalation, extreme irritation of respiratory tract... Ingestion, necrosis of esophagus and stomach with nausea, vomiting, diarrhea, circulatory collapse, death. /Hydrofluoric acid/|For more Human Toxicity Excerpts (Complete) data for AMMONIUM FLUOBORATE (6 total), please visit the HSDB record page.

Grades or purity: 97.0% minimum