GB No. 23018
CAS No. 7637-07-2
Molecular Formula BF₃
molecular 67.82

colorless gas, asphyxiating, moist air produced dense white smoke; 1013.25kPa vapor pressure (-58 ° C); melting point -126.8 ° C; the boiling point -100 ° Csolubility : soluble in cold water; density : relative density (Air = 1) 2.35; Stability : stability; risk Marker 6 (toxic gases); the main purposes : for organic synthesis catalyst, but also for the manufacture of high-energy rocket fuel

2. The impact on the environment :
a health hazard

pathways : inhalation.
health hazards : Acute poisoning : The main symptoms of cough, dyspnea, lightheadedness, chest urgency; Some patients had nausea, anorexia, salivation; A dose of a long time, a tremor and convulsions can cause pneumonia. Contact with the skin can be induced burns.

two, toxicology information and environmental behavior

acute toxicity : LC₅₀1180mg/m3, 4 hours (rat inhalation)
subacute and chronic toxicity : animal subacute and chronic toxicity experiments, the main cause respiratory irritation, pulmonary Yan and tubular degeneration; increased urinary fluoride content; may occur dental fluorosis.

hazardous characteristics : high chemical reactivity, water explosive decomposition occurred. With copper and its alloys may generate explosive acetylene chlorine. Exposure to the air humidity encountered rapid hydrolysis into boric acid and boric acid fluoride produce white smoke. Highly corrosive and can be cold glass corrosion.
combustion (decomposition) products : hydrogen fluoride, boron oxide.

3. Emergency Monitoring Methods :
speed test tube method

4. Laboratory monitoring methods :
ion selective electrode (GB7484-87, water)
membrane fluoride ion selective electrode (GB/T15434-95, air) k

5. Environmental standards :
American plant health standards 100ppm

6. Emergency treatment and disposal methods :
a leakage contingency

rapid withdrawal of staff from air leakage supremacy wind, and immediately quarantine of 150 meters and strictly restricted. Recommended emergency personnel wearing self-Pressurized respirators to wear protective clothing. As far as possible, cut off the source of leakage. A reasonable ventilation, accelerated proliferation. Spray - diluted solution. To build a causeway or trenching asylum produce a lot of wastewater. If possible, residual gas or using exhaust gas leakage sent washing machine tower or towers connected with the ventilation hood. Leak containers should be properly handled, repair, testing later use.

two protective measures

respiratory protection : normal circumstances, wearing a gas mask filter type (full cover). High concentrations of environment, must wear respirators or oxygen air respirators.
eye protection : Respiratory Protection has been protective.
physical protection : wear masks 52,400 protective clothing style.
hand protection : Wear rubber gloves.
other : work site no smoking, eating and drinking. Work to complete, take a shower. To maintain good health habits. Enter cans, or other restrictive space of high concentration operations, someone custody.

three, and emergency measures

contact with the skin : immediately stripped of contaminated clothing, with a large number of mobile water rinse. Medical treatment.
eye contact : immediately filed eyelid, with a large number of mobile water or saline thoroughly washed at least 15 minutes. Medical treatment.
Inhalation : rapidly from the scene to fresh air. To keep the airway patency. If breathing is difficult, give oxygen. If breathing stop immediately mouth. Medical treatment.

fire fighting methods : This Unburning. Fire officers must wear body fire protective clothing. Cut off the gas source. Cooling water containers, if possible to move containers from the scene empty Department. Extinguishant : dry powder, carbon dioxide.