Three boron fluoride
First, product introduction
Three boron fluoride (BF3) is a colorless and pungent odor at normal temperature. It is highly toxic, can not burn, and can not be fired, 1.3 times heavier than air.
Mixed with wet air to produce white smoke. Highly reactive, explosive decomposition of water, reacting with metal and organic matter, at normal temperature.
Corrosion-resistant glass, while wet three boron fluoride has a strong corrosivity.
Chinese Name: three boron fluoride
Molecular formula: BF3
English Name: boron trifluoride
Relative molecular weight: 67.81
CAS No:7637-07-2
Risk category: category 2.3
UN No:1008
Solubility: soluble in organic solvents
Melting point: -128 C
Boiling point: -101 C
Critical temperature: -12.25 C
Liquid density: 1589kg/m3
Critical pressure: 4.98MPa
Relative density (air =1):2.37
The application of two or three boron fluoride
Used as a catalyst in organic synthesis, it can be used as a raw material for the synthesis of organic boride, and also used in nuclear technology and optical fiber. In the electronics industry
It is mainly used as P type dopant and plasma etching gas. BF3 and compounds are used as curing agents in epoxy resin. It is also used as a lubricant for cast steel.
Three. Precautions
Three boron fluoride (BF3) is toxic. The main symptoms of acute poisoning have dry cough, shortness of breath, chest tightness, chest tightness; some patients had nausea,
Anorexia, salivation; intake for a long time, a tremor and convulsion, can cause pneumonia. Skin contact can cause burns. Bottled gas products are high pressure
Filling gas, when used, should be used after decompression and decompression. When every bottle of gas is used to tail gas, the residual pressure in the bottle should be kept at 0.3MPa, minimum.
No less than 0.2MPa pressure, the bottle valve should be closed to ensure the quality of gas and safety. Bottled gas products are used in transportation, storage and use
It should be classified and stacked. It is forbidden to pile up combustible gas and combustion gas, not close to open fire and heat source.
Barbarous fire is forbidden and barbarous loading and unloading is strictly prohibited. A steel bottle cylinder inspection time, does not meet the requirements of special gas cylinders shall be commissioned for ferrill
The inspection shall be carried out by the qualified pressure vessel inspection unit. The use of overdue steel bottles is strictly prohibited.
Four. Leakage of emergency treatment
Quickly evacuate the spill pollution area personnel first wind, and immediately isolated 150 meters, strictly restrict access. It is suggested that emergency treatment personnel wear self-sufficient positive pressure
Respirator, wear antivirus clothes. Cut off the leakage source as much as possible. Reasonable ventilation and accelerated diffusion. The spray water is diluted and dissolved. Build a dike or digging
A large amount of waste water produced by the collection. If possible, the residual gas or leakage gas is sent to the washing tower or the ventilator connected to the tower with the exhaust fan. Air leakage capacity
The device should be properly handled, rebuilt and reused.
Five, first aid measures
Skin contact: immediately remove the contaminated clothes and rinse with a large amount of flowing water. Go to a doctor.
Eye contact: immediately lift the eyelids and rinse thoroughly for at least 15 minutes with a large amount of flowing water or saline. Go to a doctor.
Inhalation: quickly out of the scene to the fresh air. Keep the respiratory tract unobstructed. If breathing is difficult, give oxygen. If the breath is stopped, proceed immediately
Artificial respiration. Go to a doctor.
Fire extinguishing method: This product is not flammable. Fire fighters must wear whole body fireproof and antivirus clothes. Cut off the gas source. Water jet cooling container, if possible, container
Move from the fire to the open. Fire extinguishing agent: dry powder and carbon dioxide.
