Boron trifluoride

inorganic compound

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Boron trifluoride is an inorganic compound with chemical formula BF three , a colorless gas, soluble in cold water, concentrated sulfuric acid and most organic solvents, is mainly used as a catalyst in organic synthesis, and also used to manufacture high-energy fuel for rockets.

Boron trifluoride, with a molecular weight of 67.81, is a colorless, nonflammable and non combustion supporting gas with asphyxiation.^{[2 ]}

Chinese name: Boron trifluoride
Foreign name: Boron trifluoride
Alias: Boron fluoride
chemical formula: BF three
molecular weight: sixty-seven point eight zero six
CAS login number: 7637-07-2
EINECS login number: 237-383-0

Melting point: -127 ℃
Boiling point: -100 ℃
Appearance: Colourless gas
Flash point: 4 ℃
Security description: S9；S16；S26；S28；S36/37/39；S45
Hazard symbol: T+；F
Hazard description: R11；R14；R26；R35；R39/23/24/25

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nine security information

Physical and chemical properties

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melting point	-127℃
boiling point	-100℃
flash point	4℃
Refractive index	1.38（20℃）
critical temperature	-12.26℃
critical pressure	4.98MPa
Saturated vapor pressure	1013.25kPa（-58℃）
appearance	Colourless gas
Solubility	Soluble in cold water, concentrated sulfuric acid and most organic solvents^[1]

Molecular structure data

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Molar refractive index	five point nine six
Molar volume (cm three /mol）	sixty-six point eight
Isotonic specific volume (90.2K)	ninety-seven point six
Surface tension (dyne/cm)	four point five
Polarization (10 -24 cm three ）	two point three six^[1]

Calculate chemical data

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Drainage parameter calculation reference value (XlogP)	nothing
Number of hydrogen bond donors	zero
Number of hydrogen bond receptors	three
Number of rotatable chemical bonds	zero
Number of tautomers	nothing
Topological molecular polar surface area (TPSA)	zero
Number of heavy atoms	four
surface charge	zero
Complexity	eight
Number of isotope atoms	zero
Determine the number of atomic geometric centers	zero
Number of uncertain atomic geometric centers	zero
Determine the number of chemical bond stereocenters	zero
Number of uncertain chemical bond stereocenters	zero
Number of covalent bond units	one^[1]

toxicology data

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Acute toxicity: LC fifty ：1180mg/m three (Inhalation of rats, 4h)^[1]

purpose

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It is mainly used as catalyst in organic synthesis and high-energy fuel for making rockets.

Protective measures

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Protection part	Protective measures
respiratory system protection	Wear filter type gas mask (full face mask) under normal working conditions. In high concentration environment, air respirator or oxygen respirator must be worn.
Eye protection	The respiratory system has been protected.
Body protection	Wear mask type adhesive tape gas protective clothing.
Hand protection	Wear rubber gloves.
other	Smoking, eating and drinking are strictly prohibited at the work site. After work, take a shower and change clothes. Keep good hygiene habits. When entering tanks, confined spaces or other high concentration areas for operation, someone must supervise.

First aid measures

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Contact part	First aid measures
Skin contact	Take off the contaminated clothes immediately and wash them with plenty of flowing water. Get medical attention.
Eye contact	Immediately lift the eyelid, and thoroughly flush it with a large amount of flowing water or physiological saline for at least 15 minutes. Get medical attention.
inhalation	Quickly leave the site to fresh air. Keep the respiratory tract unobstructed. If breathing is difficult, give oxygen. If breathing stops, perform artificial respiration immediately. Get medical attention.

Leakage emergency treatment

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Evacuate the personnel in the leakage contaminated area to the windward place quickly, isolate them for 150 meters immediately, and strictly restrict access. It is recommended that emergency personnel wear self-contained positive pressure respirators and anti poison clothing. Cut off the leakage source as much as possible. Reasonable ventilation to accelerate diffusion. Dilute and dissolve with spray water. Build a dike or dig a pit to collect a large amount of wastewater generated. If possible, the residual gas or leaked gas shall be sent to the water washing tower or the fume hood connected to the tower with an exhaust fan. Leaking containers shall be properly treated, repaired and inspected before reuse.

security information

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Safety terminology	S9：Keep container in a well-ventilated place. Keep the container in a well ventilated place.
	S16：Keep away from sources of ignition - No smoking. Keep away from ignition sources and no smoking.
	S26：In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. After eye contact, immediately flush with plenty of water and seek medical advice.
	S28：After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer). After skin contact, immediately use a large amount of (designated by the manufacturer).
	S36/37/39：Wear suitable protective clothing, gloves and eye/face protection. Wear appropriate protective clothing, gloves and eye/face protection.
	S45：In case of accident or if you feel unwell, seek medical advice immediately (show the lable where possible). In case of an accident or feeling unwell, seek medical advice immediately (show the label if possible).
Risk terminology	R11：Highly flammable. Highly flammable.
	R14：Reacts violently with water. React violently with water.
	R26：Very toxic by inhalation. Very toxic by inhalation.
	R35：Causes severe burns. Causes serious burns.
	R39/23/24/25：Toxic : danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed. Toxic: danger of extremely serious irreversible effects through inhalation, contact with skin and if swallowed.

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