GB No. 23001
CAS No. 7782-41-4
Molecular Formula F₂
molecular 38.00

2. The impact on the environment :
a health hazard

pathways : inhalation.
health hazards : the high concentration of goods have strong corrosive effect.
acute poisoning : high concentration of eye contact there, and upper respiratory tract symptoms stimulate strong, severe pulmonary edema, pulmonary hemorrhage, larynx and bronchial spasm. Fluoride on the skin, mucous membrane have a strong stimulating effect of high concentrations can cause serious burns.
chronic effects : may cause chronic rhinitis, pharyngitis, laryngitis, bronchitis, autonomic dysfunction and bone changes. Urine can be increased.

two, toxicology information and environmental behavior

toxicity : it is a high drug category.
acute toxicity : LC₅₀233mg/m3, one hour, (mouse inhalation)
irritation : human eyes by : 25ppm (5 minutes) mild irritation.
hazardous characteristics : strong oxidants. Lively is the most non-metallic elements, almost all the material and react violently and burning. When mixed with hydrogen will trigger an explosion. Especially with water or impurities contact, a fierce reaction burn, container ruptures. For many metal fluoride is corrosive and can form a protective layer of metal fluoride.
combustion (decomposition) products : hydrogen fluoride.

3. Emergency Monitoring Methods :
colorimetry "simple, rapid testing manual," Wu Yin compiled
gas velocity measurement tube (Germany Del products)

4. Laboratory monitoring methods :
monitoring methods source categories
fluorine reagents spectrophotometry,
ion selective electrode GB7483-87 water
ion chromatography GB13580 .5-92 atmospheric precipitation
ion chromatography GB/T15555.11-95 solid waste leachate
membrane;
lime filter paper;
ion selective electrode, "the air emissions monitoring and analysis methods, "the State Environmental Protection Administration and the provision of air emissions

5. Environmental standards :
China (TJ36-79) Workshop harmful substances in the air that the maximum allowable concentration 1mg/m3;
China (TJ36-79) Residential District of harmful substances in the atmosphere of the highest capacity Xu concentration 0.02mg/m3 (a value); 0.007mg/m3 (days average)

6. Emergency treatment and disposal methods :
a leakage contingency

rapid withdrawal of staff from air leakage supremacy wind and isolation and strict restrictions on access. Recommended emergency personnel wearing self-Pressurized respirators to wear protective clothing. Upwind from entering the scene. 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. The 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. Tank district best acid-based spraying facilities.
waste disposal methods : recommended fluoride emissions through activated carbon bed, generated tetrafluoroethane CFC directly emptying, and the remaining fluoride gas in fluoride-hydrocarbon combustion air for combustion, and through the alkali solution after washing chimney venting.

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. Emergency rescue or evacuation, it is recommended to wear respirators isolated.
eye protection : Respiratory Protection has been protective.
physical protection : wear protective clothing 52,400.
hand protection : Wear rubber gloves.
other : work site no smoking, eating and drinking. Work to complete, take a shower. To maintain good health habits.

three, and emergency measures

contact with the skin : immediately stripped of contaminated clothing, with a large number of mobile wash, at least 15 minutes. 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 special protective clothing, shelters in operation. Cut off the gas source. No one should have manipulated the sentinel towers or water mist to keep the fire were cooling containers, and must be sprayed water directly to the local leakage, as it will spread.