Cerium cas no:7440-45-1

NameCerium
CAS7440-45-1
SynonymsNSC 158935
EINECS(EC#)231-154-9
Molecular FormulaCe
Molecular Weight140.116

Appearancegray colored, ductile solid

Hazardclass4.1

Hazard May ignite on heating to 300F (148.9 C). Strong reducing agent.
Risk 22-23-36/38-36/37/38-20/21/22-11
Safety

Cerium resembles aluminum in its pharmacological action as well as in its chemical properties. The insoluble salts such as the oxalates are stated to be nontoxic even in large doses. It is used to prevent vomiting in pregnancy. The average dose is from 0.05 to 0.5 g.
The effect on the central nervous system of the rare-earth metals following inhalation may preclude welding operations with these materials to any large extent. Cerium is stated to produce polycythemia but is useless in the treatment of anemia owing to its toxic effects. The salts of cerium increase the blood coagulation rate. See also RARE EARTHS. A strong reducing agent. Moderate fire hazard; ignites spontaneously in air at 150–180°. Moderate explosion hazard in the form of dust when exposed to flame. The metal or its alloys spark with friction. Many alloys are pyrophoric in air. See also IRON DUST. Explosive reaction with zinc. Very exothermic reaction with antimony or bismuth. Ignites when heated in atmospheres of CO₂ + N₂, Cl₂, or Br₂. Violent reaction when heated with phosphorus (400°C), silicon (1400°C).
Safty information about  Cerium (CAS NO.7440-45-1) :
Hazard Codes: C XnF
Risk Statements:
R22: Harmful if swallowed.  
R23: Toxic by inhalation. 
R36/38: Irritating to eyes and skin. 
R36/37/38: Irritating to eyes, respiratory system and skin. 
R20/21/22: Harmful by inhalation, in contact with skin and if swallowed. 
R11: Highly flammable.
Safety Statements:
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.  
S36: Wear suitable protective clothing. 
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection. 
S16: Keep away from sources of ignition.
RIDADR: UN 2031 8/PG 2
WGK Germany: 3
F:
F 10: Keep under argon.
HazardClass: 4.1
PackingGroup: II

Oxides from metallic fires are a severe health hazard. Inhalation or contact with substance or decomposition products may cause severe injury or death. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause pollution.