Lanthanum

  •  
Formula
La
Structure
Description
Odorless, silver-gray solid.
Uses
Oxide in glass to improve optical properties.

Registry Numbers and Inventories.
CAS
7439-91-0
EC (EINECS/ELINCS)
231-099-0
R 11 15
UN (DOT)
3178
Merck
12,5374
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
La
Formula mass
138.91
Melting point, °C
885
Boiling point, °C
3469
Density
6.16 g/cm3
Solubility in water
Insoluble

Hazards and Protection.
Storage
Handle under dry argon. Keep container tightly sealed. Store in cool, dry place in tightly closed containers. Ensure good ventilation at the workplace. Keep ignition sources away. Protect from electrostatic charges.
Protection
Impervious gloves, safety glasses, full face protection and protective work clothing.
Stability
Decomposition will not occur if used and stored according to specifications.
Incompatibilities
Oxidizing agents, acids, halogens, water/moisture, sulfur.
Decomposition
Hydrogen, metal oxide fume.

Fire.
Fire fighting
Use dry powder. Do not use water, carbon dioxide or halogenated extinguisher. Wear self-contained respirator and fully protective, impervious suit.
Fire potential
Material is highly flammable.
Hazards
Contact with water releases hydrogen (explosive.)

Health.
Exposure effects
Lanthanons can cause delayed blood clotting leading to hemorrhages. Exposure may also lead to sensitivity to heat, itching, increased awareness of odor and taste, and liver damage.
   Inhalation
Causes irritation.
   Skin
Irritation.
   Eyes
Irritation.

First aid
 
   Ingestion
Seek immediate medical advice.
   Inhalation
Supply fresh air. If required, provide artificial respiration. Keep patient warm. Seek immediate medical advice.
   Skin
Immediately wash with water and soap and rinse thoroughly. Seek immediate medical advice.
   Eyes
Rinse opened eye for several minutes under running water. Then consult a doctor.

Transport.
UN number
3178
Response guide
Hazard class
4.1
Packing Group
III