GB No. 71001
CAS No. 7440-29-1
Molecular Formula Th
molecular 232.04

silvery white, lustrous, light and stretchability of a natural radioactive metal; vapor pressure; melting point 1700 ° C; solubility : not soluble in dilute acid, hydrofluoric acid; density : relative density (water = 1) 11.72; Stability : stability; risk Marker 18 (2 radioactive substances); 36 (Spontaneous goods); the main purposes : as nuclear fuel, manufacturing alloys, electronic vacuum tubes, photoelectric tubes, etc., in the chemical industry as catalyst

2. The impact on the environment :
a health hazard

pathways : inhaled, ingested.
health hazard : inhalation after a pair of upper respiratory tract irritation, cause coughing, chest pain or irregular flu.

two, toxicology information and environmental behavior

toxicity : is low toxicity category. Mainly for radiation injury.
hazardous characteristics : its powder when the temperature, the fire will burn. With halogen, such as parathion and dramatic chemical reactions that cause a fire.

3. Emergency Monitoring Methods :

4. Laboratory monitoring methods :
uranium reagent III spectrophotometry "water and wastewater monitoring and analysis methods" (third edition) Provision k EPA _BR> AAS "water and wastewater standards test" version < 15 / P>

5. Environmental standards :
the former Soviet Union (1975) plant health standards 0.05mg/m3
the former Soviet Union (1975) Harmful Substances in Water maximum allowable concentration 0.1mg/L

6. Emergency treatment and disposal methods :
a leakage contingency

isolation leakage polluted area, located around the warning signs, cut off the source of fire. Recommended emergency personnel wearing gas masks, wearing general fire protective clothing. To avoid dust, the use of tools without fear sparks in a dry Clean to a covered container, transfer recovery.

two protective measures

respiratory protection : its possible exposure to dust, they should wear dust masks. If necessary, wear gas masks.
eye protection : Wear protective safety glasses.
physical protection : wear appropriate protective clothing.
hand protection : Wear protective gloves.
other : work site no smoking, eating and drinking. After work, take a shower. Pay attention to personal hygiene.

three, and emergency measures

contact with the skin : the pollution off clothing, mobile water thoroughly washed.
eye contact : immediately filed eyelid, with a large number of mobile water thoroughly washed.
Inhalation : rapidly from the scene to fresh air. When necessary, respirators. Medical treatment. Fresh into
: coverage to those who drink large warm water, the symptoms. Medical treatment.

fire fighting methods : dry powder, foam, carbon dioxide, sand.