GB No. 43007
CAS No. 7440-46-2
Molecular Formula Cs
molecular weight of 132.91

soft silver-white metal or white liquids; vapor pressure 0.13kPa (279 ° C); the temperature of 28.5 ° C; the boiling point 679 ° C; solubility : dissolved in acid, ethanol; density : relative density (water = 1) 1.87; Stability : unstable; risk Marker 10 ( case wet flammable substances); the main purposes : for PV, a breathing tube agent, hydrogenation catalyst

2. The impact on the environment :
a health hazard

pathways : inhaled, ingested.
health hazards : Not yet see cesium poisoning case report. No long-term exposure of workers to health. Acute poisoning animals
performance to the nerves and muscles of the characteristics of excitement.

two, toxicology information and environmental behavior

acute toxicity : LD₅₀1700mg/kg (internal organs of mice cavity)
irritation : a rabbit eyes : 100mg, mildly stimulating. Rabbits open to stimulate the skin test : 495mg, mildly stimulating.
hazardous characteristics : high chemical reactivity, moist air can be spontaneous. With the air of oxygen-generating reaction oxides, such as a mixture of organic matter, create an explosive reaction. Water and acid reacted strongly, fever smoke, or even combustion explosion. With halogen oxidants and other violent reaction.

3. Emergency Monitoring Methods :

4. Laboratory monitoring methods :
plasma spectrometry; AAS

5. Environmental standards :
China (3097-1997-1997) water quality standards 137Cs : 0.7mg/L

6. Emergency treatment and disposal methods :
a leakage contingency

isolation leak contaminated areas, restricting access. Cut off the fire source. Recommended emergency personnel wearing self-contained breathing apparatus, wearing fire protective clothing. Do not direct contact with leakage. A small leak : Income metal containers and stored in kerosene or liquid paraffin. Large Leak : with the technology sector linkages, and to determine methods to remove.

two protective measures

respiratory protection : Most do not need special protection, but suggested that under special circumstances, since wearing gas masks suction filtered (half-mask).
eye protection : Wear protective chemical safety glasses.
physical protection : wear chemical protective clothing.
hand protection : Wear rubber gloves.
other : no smoking scene work. Pay attention to personal hygiene.

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. Medical treatment.

fire fighting methods : not water, halohydrocarbons (1211 extinguishing agents), sodium bicarbonate, potassium bicarbonate as a fire extinguishing agent. That is the use of graphite powder and dry sand is not applicable. An effective fire-extinguishing agent : dry powder of sodium chloride, sodium carbonate powder, calcium carbonate powder fire.