Boron trifluoride
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Boron trifluoride
structure -
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CAS No:
7637-07-2
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Formula:
BF3
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Chemical Name:
Boron trifluoride
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Synonyms:
Borane,trifluoro-;Boron fluoride (BF3);Trifluoroborane;Boron fluoride;Boron trifluoride;Trifluoroboron;ANCA 1040;109704-87-2;372-85-0;155123-44-7
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CAS No:
Description
Boron trifluoride is a nonflammable, colorless gas with an acrid suffocating odor. It forms thick acidic fumes in moist air. Dry boron trifluoride is used with mild steel, copper, copper-zinc and copper-silicon alloys, and nickel. Moist gas is corrosive to most metallic materials and some plastics. Therefore, Kel-F and Teflon are the preferred gasketing materials. Mercury containing manometers should not be used because boron trifluoride is soluble in mercury. It decomposes in hot water yieldi
Boron trifluoride is a colorless gas with a pungent odor. It is toxic by inhalation. It is soluble in water and slowly hydrolyzed by cold water to give off hydrofluoric acid, a corrosive material. Its vapors are heavier than air. Prolonged exposure of the containers to fire or heat may result in their violent rupturing and rocketing.|GasVapor|COLOURLESS COMPRESSED GAS WITH PUNGENT ODOUR. FORMS WHITE FUMES IN MOIST AIR.|Colorless gas with a pungent, suffocating odor.|Colorless gas with a pungent, suffocating odor. [Note: Forms dense white fumes in moist air. Shipped as a nonliquefied compressed gas.]
Boron trifluoride is a colorless gas with a pungent odor. It is toxic by inhalation. It is soluble in water and slowly hydrolyzed by cold water to give off hydrofluoric acid, a corrosive material. Its vapors are heavier than air. Prolonged exposure of the containers to fire or heat may result in their violent rupturing and rocketing.|Boron trifluoride is a boron fluoride.
Boron trifluoride Basic Attributes
67.81
67.81
206-766-4
7JGD48PX8P
0231
1008
DTXSID7041677
Colorless gas
Characteristics
0
0.87980
Colorless Liquid
1.6
-126.8 °C
-99.9 °C
4°C
n20/D 1.38
H2O: MAY DECOMPOSE
2-8°C
>1 mmHg at 20 °C
2.38 (21 °C, vs air)
Inhalation-rat LC50: 1180 mg/m3/4 hours; inhalation-mouse LC50: 3460 mg/m3/2 hours
Toxic boron trifluoride gas is emitted in case of heat; boron trifluoride gas is decomposed in water
May explode in moist air
Pungent, suffocating odor
Forms dense white fumes in moist air; ... reacts with incandescence when heated with alkali metals or alkaline earth metals except magnesium|Easily forms coordination complexes with molecules having at least one unshared pair of electrons; forms solid complex with nitric acid (HNO3.2BF3); polymerizes unsaturated molecules|Gaseous or liquid boron trifluoride does not react with mercury or chromium, even at high pressures for long periods.|Critical volume: 115 cu cm/mol|For more Other Experimental Properties (Complete) data for BORON TRIFLUORIDE (6 total), please visit the HSDB record page.
Fumes in air. Soluble in water and slowly hydrolyzed by cold water to give hydrofluoric acid. Reacts more rapidly with hot water.
Fluoride Salts, Soluble
Known Catalytic Activity
BORON TRIFLUORIDE is a colorless, strongly irritating, toxic gas. Upon contact with water, steam or when heated to decomposition, it will produce toxic fluoride fumes. Incompatible with alkyl nitrates, calcium oxide. Reaction with alkali metals or alkaline earth metals (except magnesium) will cause incandescence [Bretherick, 5th ed., 1995, p. 65].
15.50 eV
Nonflammable Gas
The gas is heavier than air.
Boron trifluoride will attack some forms of plastics, rubber, and coatings
19.33 kJ/mol at -101 °C
Critical temperature: 260.8 K (-12.35 °C); critical pressure: 4.98 MPa (3.74X10+4 mm Hg)
Safety Information
2.3
UN 3286 3/PG 2
3
14-26-35-39/23/24/25-24/25-11-67-41-10-37-22
9-26-28-36/37/39-45-28A-16
ED2275000
T+,C,T,F
The warehouse is ventilated, low temperature and dry; stored separately from oxidants and acids
Corrosive/Toxic
Steel cylinders can explode when exposed to heat and sunlight; highly toxic gases are released
Trialkylboranes are stable indefinitely when stored under an inert atmosphere. /Trialkylboranes/
P261-P280-P305 + P351 + P338-P310
H226-H302-H314-H332-H335-H336
SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational harm/injury/toxicity 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 and plant life; and conformance with environmental and public health regulations.|Chemical reaction with water to form boric acid and fluoroboric acid. The fluoroboric acid is reacted with limestone forming boric acid and calcium fluoride. The boric acid may be discharged into a sanitary sewer system while the calcium fluoride may be recovered or landfilled.
Boron trifluoride reacts with incandescence when heated with alkali metals or alkaline earth metals, except magnesium.|Ethyl, isopropyl, butyl, benzyl, and triphenylmethyl nitrates in contact with ... boron trifluoride interact violently (after an induction period of up to several hr) with gas evolution.|The reaction of calcium oxide and boron trifluoride forms a fused mass after warming.|Hydrolyzes to produce boric acid, hydrofluoric acid, and fluoboric acid. Catalyst for many polymerization reactions.|For more Hazardous Reactivities and Incompatibilities (Complete) data for BORON TRIFLUORIDE (19 total), please visit the HSDB record page.
NIOSH; Criteria Document: Boron trifluoride (1976) DHEW Pub. NIOSH 77-122|USEPA; Chemical Profiles: Boron trifluoride 1-3 (1985)
When heated to decomposition or upon contact with water or steam, it will produce toxic and corrosive fumes of fluorine containing compounds. Decomposes upon heating or on contact with moist air, forming toxic and corrosive fumes of boric acid and hydrofluoric acid. Reacts with alkalis and fumes in moist air, producing particulates which reduce visibility. Reacts with alkali metals, alkaline earth metals (except magnesium), alkyl nitrates, and calcium oxide. It hydrolyzes in moist air to form boric acid, hydrofluoric acid, and fluoboric acid. (EPA, 1998)|Not combustible.|Reactive - 1st degree
|Danger|H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]|P260, P264, P271, P280, P284, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P320, P321, P363, P403+P233, P405, and P501|H280 (60.15%): Contains gas under pressure; may explode if heated [Warning Gases under pressure]|P260, P261, P264, P271, P280, P284, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P314, P320, P321, P363, P403+P233, P405, P410+P403, and P501|Aggregated GHS information provided by 517 companies from 17 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H280 (100%): Contains gas under pressure; may explode if heated [Warning Gases under pressure]|The GHS information provided by 1 company from 1 notification to the ECHA C&L Inventory.|H280: Contains gas under pressure; may explode if heated [Warning Gases under pressure]|P260, P264, P270, P271, P280, P284, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P309+P311, P310, P314, P320, P321, P363, P403+P233, P405, P410+P403, and P501|P260, P261, P264, P270, P271, P280, P284, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P309+P311, P310, P312, P314, P320, P321, P363, P403+P233, P405, P410+P403, and P501
Excerpt from ERG Guide 125 [Gases - Corrosive]: As an immediate precautionary measure, isolate spill or leak area for at least 100 meters (330 feet) in all directions. SPILL: See ERG Table 1 - Initial Isolation and Protective Action Distances on the UN/NA 1008 datasheet. FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 1600 meters (1 mile) in all directions; also, consider initial evacuation for 1600 meters (1 mile) in all directions. (ERG, 2016)
Excerpt from ERG Guide 125 [Gases - Corrosive]: Fully encapsulating, vapor-protective clothing should be worn for spills and leaks with no fire. Do not touch or walk through spilled material. Stop leak if you can do it without risk. If possible, turn leaking containers so that gas escapes rather than liquid. Prevent entry into waterways, sewers, basements or confined areas. Do not direct water at spill or source of leak. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. Isolate area until gas has dispersed. (ERG, 2016)
Skin: No recommendation is made specifying the need for personal protective equipment for the body. Eyes: No recommendation is made specifying the need for eye protection. Wash skin: No recommendation is made specifying the need for washing the substance from the skin (either immediately or at the end of the work shift). Remove: No recommendation is made specifying the need for removing clothing that becomes wet or contaminated. Change: No recommendation is made specifying the need for the worker to change clothing after the work shift. (NIOSH, 2016)|Wear special protective clothing and positive pressure self-contained breathing apparatus.|Air supplied respirators should only be used in certain non-routine ... or emergency situations when air concn of boron trifluoride are sufficient to form visible mist. Proper impervious protective clothing incl gloves, aprons, suits, boots, goggles, and face shields ... as needed to prevent skin and eye contact ...|Respirator Recommendations: Up to 10 ppm: [Table#1053]|Respirator Recommendations: Up to 25 ppm: [Table#1054]|For more Personal Protective Equipment (PPE) (Complete) data for BORON TRIFLUORIDE (8 total), please visit the HSDB record page.|(See protection codes)
Nonflammable compressed gas.|Nonflammable
Certain chemicals, if drawn back into a boron trifluoride cylinder, can build up tremendous pressure that may cause the cylinder to burst.|... May ... explode in moist air ... /Boranes/
Approach fire from upwind to avoid hazardous vapors and toxic decomposition products. Use water spray to keep fire-exposed containers cool. Extinguish fire using agent suitable for surrounding fire.|If material involved in fire: Extinguish using agent suitable for type of surrounding fire (material itself does not burn or burns with difficulty). Cool all affected containers with flooding quantities of water. Apply water from as afar a distance as possible. Do not use water on material itself. If large quantities of combustibles are involved, use water in flooding quantities as spray and fog. Use water spray to knock-down vapors.
Approach release from upwind. Stop or control the leak, if this can be done without undue risk. Use water spray to cool and disperse vapors and protect personnel. Avoid wetting leak or spill area. Releases may require isolation or evacuation.|Evacuate danger area! Consult an expert! Ventilation. NEVER direct water jet on liquid. Remove fumes with fine water spray (extra personal protection: complete protective clothing including self-contained breathing apparatus).|Ventilate area of leak to disperse the gas. Stop flow of gas. If source of leak is cylinder and leak cannot be stopped in place, remove ... to safe place in open air, and repair leak or allow cylinder to empty.
SRP: The scientific literature for the use of contact lenses by industrial workers is inconsistent. The benefits 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.|Gas masks approved for acid gases or those with an independent oxygen or air supply should be available in convenient locations ... do not use equipment which has been used for boron trifluoride with other gases, particularity oxygen, since the gas may have oil vapors which coat out on the equipment, causing fires when combined with oxygen under pressure. /To prevent/ the possibility of suckback into the cylinder, traps or check valves should be used as a safe-guard.|Fountains and safety showers must be provided in areas of potential boron trifluoride exposure, since skin and eye effects can be minimized with immediate, thorough washing of exposed surfaces.|Food preparation, dispensing (including vending machines), and eating should be prohibited in boron trifluoride work areas. Smoking and uncovered smoking materials should be prohibited in boron trifluoride work areas because of the possibility of adsorption of the compound onto smoking materials.|For more Preventive Measures (Complete) data for BORON TRIFLUORIDE (12 total), please visit the HSDB record page.
If ... THERE IS NO FIRE, go directly to the Table of Initial Isolation and Protective Action Distances /(see table below)/ ... to obtain initial isolation and protective action distances. IF THERE IS A FIRE, or IF A FIRE IS INVOLVED, go directly to the appropriate guide /(see guide(s) below)/ and use the evacuation information shown under PUBLIC SAFETY. /Boron trifluoride, Boron trifluoride, compressed/|/GUIDE 125: GASES - CORROSIVE/ Health: TOXIC; may be fatal if inhaled, ingested or absorbed through skin. Vapors are extremely irritating and corrosive. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control may cause pollution. /Boron trifluoride; Boron trifluoride, compressed/|/GUIDE 125: GASES - CORROSIVE/ Fire or Explosion: Some may burn, but none ignite readily. Vapors from liquefied gas are initially heavier than air and spread along ground. Some of these materials may react violently with water. Cylinders exposed to fire may vent and release toxic and/or corrosive gas through pressure relief devices. Containers may explode when heated. Ruptured cylinders may rocket. /Boron trifluoride; Boron trifluoride, compressed/|/GUIDE 125: GASES - CORROSIVE/ Public Safety: CALL Emergency Response Telephone Number ... As an immediate precautionary measure, isolate spill or leak area for at least 100 meters (330 feet) in all directions. Keep unauthorized personnel away. Stay upwind. Many gases are heavier than air and will spread along ground and collect in low or confined areas (sewers, basements, tanks). Keep out of low areas. Ventilate closed spaces before entering. /Boron trifluoride; Boron trifluoride, compressed/|For more DOT Emergency Guidelines (Complete) data for BORON TRIFLUORIDE (17 total), please visit the HSDB record page.
No person may /transport,/ offer or accept a hazardous material for transportation in commerce unless that person is registered in conformance ... and the hazardous material is properly classed, described, packaged, marked, labeled, and in condition for shipment as required or authorized by ... /the hazardous materials regulations (49 CFR 171-177)./|The International Air Transport Association (IATA) Dangerous Goods Regulations are published by the IATA Dangerous Goods Board pursuant to IATA Resolutions 618 and 619 and constitute a manual of industry carrier regulations to be followed by all IATA Member airlines when transporting hazardous materials.|The International Maritime Dangerous Goods Code lays down basic principles for transporting hazardous chemicals. Detailed recommendations for individual substances and a number of recommendations for good practice are included in the classes dealing with such substances. A general index of technical names has also been compiled. This index should always be consulted when attempting to locate the appropriate procedures to be used when shipping any substance or article.
The gas is very irritating to the skin.|... Severe irritant effects of the eyes, lungs, and mucous membranes.
Permissible Exposure Limit: Table Z-1 Ceiling value: 1 ppm (3 mg/cu m).
Recommended Exposure Limit: (15 Min) Ceiling value: 1 ppm (3 mg/cu m).
Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Ventilation. NEVER direct water jet on liquid. Remove fumes with fine water spray.
Separated from alkali metals, alkaline earth metals, alkyl nitrates and lime. Cool.
A harmful concentration of this gas in the air will be reached very quickly on loss of containment.
The substance is corrosive to the eyes, skin and respiratory tract. Inhalation of high concentrations may cause lung oedema, but only after initial corrosive effects on the eyes and the upper respiratory tract have become manifest. Rapid evaporation of the liquid may cause frostbite.
The substance may have effects on the kidney, lungs and teeth and bones (fluorosis).
STRICT HYGIENE! IN ALL CASES CONSULT A DOCTOR!
Use ventilation, local exhaust or breathing protection.
Protective gloves. Cold-insulating gloves. Protective clothing.
Wear face shield or eye protection in combination with breathing protection.
| 4 - Materials that, under emergency conditions, can be lethal.| 0 - Materials that will not burn under typical fire conditions, including intrinsically noncombustible materials such as concrete, stone, and sand.| 1 - Materials that in themselves are normally stable but that can become unstable at elevated temperatures and pressures.
Releases of CERCLA hazardous substances are subject to the release reporting requirement of CERCLA section 103, codified at 40 CFR part 302, in addition to the requirements of 40 CFR part 355. Boron trifluoride is an extremely hazardous substance (EHS) subject to reporting requirements when stored in amounts in excess of its threshold planning quantity (TPQ) of 500 lbs.
Toxicity
moderately toxic
LC50 Rat (male) inhalation 387 (320-467) ppm/1 hr|LC50 Rat inhalation 1.21 mg/L/4 hr|LC50 Rat inhalation 1180 mg/cu m/4 hr|LC50 Mouse inhalation 3460 mg/cu m/2 hr|For more Non-Human Toxicity Values (Complete) data for BORON TRIFLUORIDE (8 total), please visit the HSDB record page.
Persons with impaired pulmonary function may be at increased risk from exposure /to boron trifluoride/.
The chemistry of boron is dominated by its tendency to form stable bonds with electronegative atoms, especially oxygen. Reduced boron compounds (halides, hydrides, alkyls and aryls) tend to oxidize and hydrolyze readily, and would be expected to be converted into various boron-oxide compounds in the environment. Inorganic boron compounds are nonvolatile and would not be expected to volatilize from moist or dry soil surfaces. (SRC)
According to the 2006 TSCA Inventory Update Reporting data, the number of persons reasonably likely to be exposed in the industrial manufacturing, processing, and use of boron trifluoride is 1 to 99; the data may be greatly underestimated(1).|NIOSH (NOES Survey 1981-1983) has statistically estimated that 3,819 workers (524 of these are female) are potentially exposed to boron trifluoride(1). Occupational exposure to boron trifluoride may occur through inhalation and dermal contact with this compound at workplaces where boron trifuloride is produced or used(SRC).|Inhalation of vapors or skin and eye contact.|The following list includes some common operation in which exposure to boron trifluoride may occur ... Use as a Lewis acid catalyst for alkylation of aromatic compounds; use in polymer technology in manufacture of phenolic and epoxy resins; Use in synthesis of other boron-containing organic and inorganic compounds; use in purification of hydrocarbons to remove unsaturates and sulfur, nitrogen, and oxygen containing compounds; Use in nuclear technology for separation of boron isotopes; as a filling gas for neutron counters; Use in metallurgy as flux and antioxidant; use as flame coloring agent for liquefied petroleum gas.|For more Probable Routes of Human Exposure (Complete) data for BORON TRIFLUORIDE (7 total), please visit the HSDB record page.
Drug Information
Food and Environmental Agents: Effect on Breast-Feeding: Reported Sign or Symptom in Infant or Effect on Lactation: Fluorides: None. /from Table 7/
... /During inhalation exposures up to 6 months at concentrations of 12.8 ppm, 3-4 ppm and 1.5 ppm/ the average fluorine content of rat teeth and bone was elevated at all exposure levels but not in soft tissues analyzed, lung, liver and blood.
Common impurities in BF3 include air, silicon tetrafluoride, and sulfur dioxide.|1.0% nitrogen; <0.006% sulfur dioxide; <0.0006% ferric oxide; <0.003% silicon dioxide; traces of oxygen.
Highly toxic; may cause death or permanent injury after very short exposure to small quantities. Substance is irritating to the eyes, the skin, and the respiratory tract. (EPA, 1998)
Warning: Boron trifluoride is extremely corrosive. Caution is advised. Signs and Symptoms of Acute Boron Trifluoride Exposure: Acute inhalation exposure of boron trifluoride may result in sneezing, hoarseness, choking, laryngitis, and respiratory tract irritation. Bleeding of the nose and gums, ulceration of the nasal and oral mucosa, bronchitis, pneumonia, dyspnea (shortness of breath), chest pain, and pulmonary edema may also occur. If the eyes have come in contact with boron trifluoride, irritation, pain, swelling, corneal erosion, and blindness may result. Dermal exposure may result in dermatitis (red, inflamed skin), severe burns, and pain. Emergency Life-Support Procedures: Acute exposure to boron trifluoride may require decontamination and life support for the victims. Emergency personnel should wear protective clothing appropriate to the type and degree of contamination. Air-purifying or supplied-air respiratory equipment should also be worn, as necessary. Rescue vehicles should carry supplies such as plastic sheeting and disposable plastic bags to assist in preventing spread of contamination. Inhalation Exposure: 1. Move victims to fresh air. Emergency personnel should avoid self-exposure to boron trifluoride. 2. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer oxygen or other respiratory support. 3. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures. 4. RUSH to a health care facility. Dermal/Eye Exposure: 1. Remove victims from exposure. Emergency personnel should avoid self- exposure to boron trifluoride. 2. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer oxygen or other respiratory support. 3. Remove contaminated clothing as soon as possible. 4. If eye exposure has occurred, eyes must be flushed with lukewarm water for at least 15 minutes. 5. Wash exposed skin areas THOROUGHLY with soap and water. 6. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures. 7. RUSH to a health care facility. Ingestion Exposure: 1. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer oxygen or other respiratory support. Humidified oxygen is preferred. 2. IMMEDIATELY give the victims milk or water to dilute the hydrofluoric acid: children up to 1 year old, 125 mL (4 oz or 1/2 cup); children 1 to 12 years old, 200 mL (6 oz or 3/4 cup); adults, 250 mL (8 oz or 1 cup). Milk or water should be given only if victims are conscious and alert. 3. DO NOT induce vomiting. 4. Milk of Magnesia should be administered if victims are conscious and alert. Use 2.5 mL (1/2 tsp) for children up to 1 year old, 5 mL (1 tsp) for children 1 to 12 years old, and 10 mL (2 tsp) for adults. Do not exceed 15 mL (3 tsp or 1 tbsp). 5. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures. 6. Activated charcoal is of no value. 7. Repeat the administration of water or milk to conscious and alert victims. Use quantities listed above (see No. 2). 8. Transport to a health care facility. (EPA, 1998)|(See procedures)
Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer immediately for medical attention.
Wear protective gloves when administering first aid. Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer immediately for medical attention.
Rinse with plenty of water (remove contact lenses if easily possible). Refer immediately for medical attention.
If strong concentrations of boron trifluoride gas get into the eyes, wash eyes immediately with large amounts of water, lifting the lower and upper lids occasionally. Get medical attention immediately. Contact lenses should not be worn when working with this chemical.|If strong concentrations of boron trifluoride gas contact the skin, immediately flush the contaminated skin with water. If strong concentrations of boron trifluoride gas penetrate through the clothing, remove the clothing immediately and flush the skin with water. If irritation persists after washing, get medical attention.|If a person breathes in large amounts of boron trifluoride, move the exposed person to fresh air at once. If breathing has stopped, perform artificial respiration. Keep the affected person warm and at rest. Get medical attention as soon as possible.|Move the affected person from the hazardous exposure. If the exposed person has been overcome, notify someone else and put into effect the estalished emergency rescue procedures. Do not become a casualty. Understand the facility's emergency rescue procedures and know the locations of rescue equipment before the need arises. /Boron trifluoride/|For more Antidote and Emergency Treatment (Complete) data for BORON TRIFLUORIDE (15 total), please visit the HSDB record page.
/HUMAN EXPOSURE STUDIES/ In... manufacturing plant in USA, physical exams initiated in 1974 for small group of workers including 7 with present and 6 with past exposures to boron trifluoride or other fluorides, ranging from 1 to 27 yr. Five of the 7 currently exposed, and 3 of 6 with previous exposures showed lower pulmonary function (forced VC and FEV) than predicted for normal population. Lowered pulmonary function was severe in 1, moderate in 3, and minimal in 1 of 7 currently exposed who had average exposure of 13 yr. X-rays were negative, and no urinary fluorine concentrations were above acceptable preshift concentrations of 4 mg/L.|/SIGNS AND SYMPTOMS/ /Possible effects of exposure on/ skin /include/ redness, burning sensation, pain, and on contact with liquid: frostbite.|/SIGNS AND SYMPTOMS/ /Possible effects of exposure by/ inhalation /include/ corrosion, burning sensation, cough, and labored breathing.|/SIGNS AND SYMPTOMS/ EFFECTS OF SHORT-TERM EXPOSURE: Corrosive. Tear drawing. The substance is corrosive to the eyes, the skin and the respiratory tract. Inhalation of the gas may cause lung edema. Rapid evaporation of the liquid may cause frostbite.|For more Human Toxicity Excerpts (Complete) data for BORON TRIFLUORIDE (13 total), please visit the HSDB record page.
boron trifluoride
The substance can be absorbed into the body by inhalation. Serious local effects on contact with skin.|inhalation, skin and/or eye contact
irritation eyes, skin, nose, respiratory system; epistaxis (nosebleed); eye, skin burns; In Animals: pneumonitis; kidney damage
Burning sensation. Cough. Laboured breathing.
Redness. Burning sensation. Pain. ON CONTACT WITH LIQUID: FROSTBITE.
Redness. Pain. Blurred vision.
Eyes, skin, respiratory system, kidneys
Boron trifluoride Use and Manufacturing
The thermal decomposition method uses refined sodium borofluoride as raw material, adds it to the thermal decomposer, and begins to decompose sodium fluoroborate when it is heated to 384°C. The released boron trifluoride gas is purified and enters the collector to obtain high purity. Boron trifluoride. Its NaBF4[△]→BF3+NaF
To protect molten magnesium and its alloys from oxidation; as a flux for soldering magnesium; as a fumigant; in ionization chambers for the detection of weak neutrons.By far the largest application of boron trifluoride is in catalysis with and without promoting agents.
Adhesives and sealant chemicals
Production volume for non-confidential chemicals reported under the 2006 Inventory Update Rule. Chemical: Borane, trifluoro-. Aggregated National Production Volume: <500,000 lbs.
Grades: Pure (99% min)|10% boron trifluoride in methanol|99.5% boron trifluoride hydrate; boron trifluoride dihydrate, 95%|Boron trifluoride is available in quantity as a 99% pure gas.
All other basic inorganic chemical manufacturing|Borane, trifluoro-: ACTIVE|Lab preparation: decomposition of a diazonium fluoroborate and the fluorination of boron trichloride with antimony trifluoride|In the finished product, the content of decomposition products of the catalyst must not exceed 0.04% of boron & 0.3% of fluorine.
Fire Hazards -> Reactive - 1st degree
Computed Properties
Molecular Weight:67.81
Hydrogen Bond Acceptor Count:3
Exact Mass:68.0045147
Monoisotopic Mass:68.0045147
Heavy Atom Count:4
Complexity:8
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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