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MATERIAL SAFETY DATA SHEET
CAS # :
HAZARDOUS INGRED IENTS
Toxic Substances Control Act: Beryllium (CAS # 7440-41-7) is listed on the TSCA Chemical Substance Inventory of Existing
NIOSH RTECS# :
Melting Point (oC):
% V olatiles:
Solubility in H2O :
Appearance and Odor: Grey metallic, odorless
FIRE AND EXPLOSION H AZARDS DATA
Flash Point (Method used): Non-combustible as a solid. Ignition occurred as a powder layer consisting of 1.0 to 5.0 micron
particles between 540 oC and 700 oC. Coarser beryllium powder able to pass through a 74 micron sieve did not ignite under like
Explosive limits: Not applicable to solids. As a cloud of 1.0 micron diameter powder ignition occurred at 910 oC. Beryllium powder
greater than or equal to 2 microns in diameter did not ignite under like conditions. Regardless of powder size tested beryllium did not
ignite as a cloud in a spark apparatus.
Extinguishing Media : As a so lid, use extinguish ing m edia appropriate to the surrounding fire. Do not use water or carbon d ioxide to
extinguish beryllium pow der fires. As a powder, extinguish by smothering using a Class D fire extinguisher, dry sand, graphite
powder, or sodium chloride.
Special Fire Fighting Procedures: If this material becomes airborne as a respirable particulate during a fire situation, pressure-
demand self-contained breathing apparatus must be worn by firefighters or any other persons poten tially exposed to the m etal fumes.
Unusual Fire and Explosion Hazard: Do not use water to e