GB No. 61022
CAS No. 7440-28-0
Molecular Formula Tl
molecular 204.37

with a silver-white metal, soft; Vapor pressure 0.13kPa (825 ° C); Melting point 302.5 ° C; The boiling point 1457 ° C; Solubility : not soluble in water, alkali - soluble, dissolved sulfate, nitrate; Density : relative density (water = 1) 11.85; Stability : unstable; risk Marker 14 (Judaipin); the main purposes : for the system photocell, or low temperature, optical glass, the system is also used thallium compounds

2. The impact on the environment :
a health hazard

pathways : inhaled, ingested, percutaneous absorption.
health hazards : strong nerve poison, the liver, a kidney damage. Inhalation and oral can cause acute poisoning; To be absorbed through the skin.
acute poisoning : Oral nausea, vomiting, abdominal cramps, loss of appetite and so on. 3-5 days after multiple cranial nerves and peripheral nerve damage. There sensory dysfunction and uplink muscular paralysis. Serious damage to the central nervous that may occur toxic encephalopathy. Alopecia for specific performance. Skin rashes, fingers (toe) A white stripes, which are liver and kidney damage.
chronic poisoning : The main symptoms of a neurasthenic syndrome, hair loss, Weina worse.可有周围神经病�?球后视�T经炎�?Liver damage can occur.

two, toxicology information and environmental behavior

highly toxic thallium compounds, with accumulation of strong nerve poison, and can lead to liver and kidney damage. A price thallium more toxic thallium three small price. Most acute thallium poisoning non-occupational poisoning, overdose, the use of thallium compounds drugs or other causes. The acute occupational poisoning mainly for smoke inhalation thallium, vapor. The large number of oral intake of such substances can cause gastrointestinal symptoms of (abdominal cramps, nausea, vomiting, diarrhea), peripheral neuritis, central nervous system disorder, psychotic symptoms, and shed limbs pain symptoms. Thallium combustible organic compounds, toxic dust can irritates the eyes, nose, such as nausea, vomiting, abdominal pain and other symptoms.

hazardous characteristics : fine powder case of heat and fire burnt a risk of explosion. Violent reaction with oxygen. Exposure to the air would be oxidized and metamorphism.
combustion (decomposition) product : the possible harmful toxic fumes.

3. Emergency Monitoring Methods :
portable digital voltammetry "sudden environmental pollution monitoring and emergency treatment and disposal technologies," 10,000 < too editor / P>

4. Laboratory monitoring methods :
plasma spectrometry; AAS
AAS "Solid Waste Analysis Evaluation Manual," the China Environmental Monitoring terminus translated

5. Environmental standards :
former West Germany (1982) Workshop harmful substances in the air that the maximum allowable concentration 0.1mg/m3 (soluble thallium compounds)
China (to be issued), the water is the source of drinking water the material harm maximum allowable concentration 0.0001mg/L

6. Emergency treatment and disposal methods :
a leakage contingency

isolation leak contaminated areas, restricting access. Recommended emergency personnel wearing self-Pressurized respirators to wear protective clothing. Do not direct contact with leakage. So carefully, transfer recovery.

two protective measures

respiratory protection : its possible exposure to dust, must wear headgear electric powered air-purifying respirators and dust. Emergency rescue or evacuation, it is recommended to wear air respirators.
eye protection : Respiratory Protection has been protective.
physical protection : Cruise-wear protective clothing 52,400.
hand protection : Wear rubber gloves.
other : work site prohibit smoking, eating and drinking. Work to complete, take a shower. Separate storage of toxic pollution by the clothes, washed standby. To maintain good health habits.

three, and emergency measures

contact with the skin : stripped of contaminated clothing, use soap and water thoroughly washed skin.
eye contact : Did eyelid, mobile or saline irrigation water. 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. Fresh into
: warm water to drink enough, the symptoms, with 1% potassium iodide 60mL gavage. Gastric lavage. Medical treatment.

fire fighting methods : fire officers must wear body fire protective clothing. Extinguishant : dry sand. Carbon dioxide.