Thorium cas no:7440-29-1

NameThorium
CAS7440-29-1
SynonymsThorium, pyrophoric;Thorium-232;THORIUM PLASMA EMISSION SPECTROSCOPY STANDARD;THORIUM PLASMA EMISSION STANDARD;THORIUM;THORIUM ATOMIC ABSORPTION STANDARD;THORIUM SINGLE ELEMENT PLASMA STANDARD;THORIUM SINGLE ELEMENT STANDARD
EINECS(EC#)231-139-7
Molecular FormulaTh
Molecular Weight0

Hazardclass7

Hazard T
Risk 23/24/25-34
Safety

Hazard Codes of Thorium (CAS NO.7440-29-1): T
Risk Statements: 23/24/25-34 
R23/24/25: Toxic by inhalation, in contact with skin and if swallowed. 
R34: Causes burns.
Safety Statements: 26-27-28-36/37/39-45 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S27: Take off immediately all contaminated clothing. 
S28: After contact with skin, wash immediately with plenty of soap-suds. 
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection. 
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
RIDADR: UN 3264 8/PG 3
HazardClass: 7
PackingGroup: Commercial
Suspected carcinogen. Taken internally as ThO₂, it has proven to be carcinogenic due to its radioactivity. On an acute basis it has caused dermatitis. Flammable in the form of dust when exposed to heat or flame, or by chemical reaction with oxidizers. The powder may ignite spontaneously in air. Potentially hazardous reactions with chlorine, fluorine, bromine, oxygen, phosphorus, silver, sulfur, air, nitryl fluoride, peroxyformic acid.

Radiation presents minimal risk to transport workers, emergency response personnel and the public during transportation accidents. Packaging durability increases as potential hazard of radioactive content increases. Undamaged packages are safe. Contents of damaged packages may cause higher external radiation exposure, or both external and internal radiation exposure if contents are released. Low radiation hazard when material is inside container. If material is released from package or bulk container, hazard will vary from low to moderate. Level of hazard will depend on the type and amount of radioactivity, the kind of material it is in, and/or the surfaces it is on. Some material may be released from packages during accidents of moderate severity but risks to people are not great. Released radioactive materials or contaminated objects usually will be visible if packaging fails. Some exclusive use shipments of bulk and packaged materials will not have "RADIOACTIVE" labels. Placards, markings and shipping papers provide identification. Some packages may have a "RADIOACTIVE" label and a second hazard label. The second hazard is usually greater than the radiation hazard; so follow this GUIDE as well as the response GUIDE for the second hazard class label. Some radioactive materials cannot be detected by commonly available instruments. Runoff from control of cargo fire may cause low-level pollution.