4 9.012
Be
Beryllium

Beryllium , Be

Beryllium is a chemical element with the symbol Be and atomic number 4. A bivalent element, beryllium is a steel grey, strong, light-weight yet brittle, alkaline earth metal. It is primarily used as a hardening agent in alloys, most notably beryllium copper. Commercial use of beryllium metal presents technical challenges due to the toxicity (especially by inhalation) of beryllium-containing dusts.

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Form

B2-5007-M

BeF2 6mm Pieces & smaller 99.5% Pure

Beryllium Fluoride

B2-5008-M

BeSe 6mm Pieces & smaller 99% Pure

Beryllium Selenium

B2-5009-M

BeTe 6mm Pieces & smaller 99.99% Pure

Beryllium Telluride

B2-10002-P

BeO Powder <10ćm 99.5% Pure

Beryllium oxide

6.1 UN1566 PGII

B2-10008-P

Be2C -200 Mesh 98% Pure

Beryllium Carbide

B2-10009-P

BeF2 -80 mesh 98%+ pure

Beryllium fluoride

B2-10010-P

Be3N2 -60 Mesh 99% Pure 

Beryllium Nitride

6.1 UN1566 PG II

B2-10011-P

BeO -200 Mesh 99.95% Pure

Beryllium Oxide

6.1 UN1566 PG II

B2-10013-P

BeS -100 Mesh 99% Pure

Beryllium Sulphide

4.1 UN3179 PG II

B2-10014-P

BeF2 Powder <50ćm 99.5% Pure

Beryllium fluoride

6.1 UN1566 PGII

B2-9001-D

Beryllium Zinc Magnesium Be/Zn/Mg,

Available in various ratios wt% or at%, Purity 99.99%

B2-9002-D

Beryllium oxide BeO,

Available purity 99%

B2-9002-D1

BeO 25.4mm dia. x 3.18mm Tk 99% Pure

Beryllium oxide

Beryllium is relatively rare element in both the Earth and the universe, due to the fact that it is not formed in conventional stellar nucleosynthesis. The element is not known to be necessary or useful for either plant or animal life.

Symbol Ba
Atomic number 56
No. of naturally occurring isotopes 7
Atomic weight 137.33
Electronic configuration [Xe] 6s2
Ionization energy/kJmol I 502.7
II 965
Metal radius/pm 222
Ionic radius/pm (6-coord) 13.5
Density (20°C)/gcm-3 3.62
Melting point /°C 725
Boiling point /°C -1850
ΔHfus/kJmol-1 7.8
ΔHvap/kJmol-1 136
Electrical resistivity
(20°C)/ μohm cm 50
Eo(M2-(aq)2e- →M(S))/V -2.91
Temperature (oC) @Vap. Pressure
10-8 Torr 710
10-6 Torr 878
10-4 Torr 1000
Techniques
Electron Beam Excellent
Crucible Graphite & Vitreous Graphite
Coil Tungsten
Boat Tantalum & Tungsten
Remarks
Wets W, Mo & Ta. Metal powder & oxides are toxic. Evaporates easily.