2. The impact on the environment :
a health hazard
pathways : inhalation.
health hazards : high concentration exposure to the goods some time, can occur delayed irritative symptoms, performance headache, dizziness, lightheadedness, nausea, cough, dyspnea. Severe cases can lead to pulmonary edema. High concentrations of the goods under a certain amount of pressure in contact with the skin can cause burns.
two, toxicology information and environmental behavior
acute toxicity : LC50300mg/m3, 1 hour (rat inhalation); 137mg/m3, 1 hour (mouse inhalation)
hazardous characteristics : strong oxidizing. With many substances, including water vapor and air can produce strong or explosive reaction. Heating decomposition of toxic smoke.
combustion (decomposition) products : hydrogen fluoride.
3. Emergency Monitoring Methods :
speed test tube; Ion selective electrode
4. Laboratory monitoring methods :
ion selective electrode (GB7484-87, water)
membrane fluoride ion selective electrode (GB/T15434-95, air)
5. Environmental standards :
China (TJ36-79) Residential District of harmful substances in the atmosphere of the maximum allowable concentration (fluoride) 0.02mg/m3 (a value)
0.007mg/m3 ( Mean Day)
China (GB5048-92), irrigation water quality standards (fluoride) 2.0-3.0mg / L (water and dry vegetables)
Chinese (GB11607-89) fishery waters quality standard 1 mg / L (fluoride)
China (GB5749-85) health standards for drinking water 1.0 mg / L (fluoride)
China (GB5058.3-1996), solid waste leaching toxic Kam other standard value of 50 mg / L (fluoride)
6. Emergency treatment and disposal methods :
a leakage contingency
rapid withdrawal of staff from air leakage supremacy wind, and immediately quarantine 450 meters and strictly restricted. Cut off the fire source. Recommended emergency personnel wearing self-Pressurized respirators to wear protective clothing. As far as possible, cut off the source of leakage. Rendering leakage and combustible material (such as wood, paper, oil, etc.) contact. 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 : higher concentration in air, the air must wear respirators, oxygen respirator mask or long pipe.
eye protection : Respiratory Protection has been protective.
physical protection : wear protective clothing sealed.
hand protection : Wear rubber gloves.
other : no smoking scene work. To maintain good health habits.
three, and emergency measures
contact with the skin : if it burns, medical care 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 : 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 : atomised water, dry powder.
Notice:Each item can have many explanations from different angels. If you want grasp the item comprehensively,please see below "more details data".