Cesium

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Cerium Ampoule

MATERIAL OVERVIEW

Characteristics: Liquid at slightly above room temperature; soft solid below melting point. Highly reactive. Decomposes in water, with evolution of hydrogen, which ignites instantly. Also reacts violently with oxygen, the halogens, sulfur, and phosphorus, with spontaneous ignition and/or explosion. Mohs hardness 0.2. Cesium has highest position in the electromotive series; it also has the lowest melting point of any alkali metal, and the lowest ionization potential of any element. Soluble in acids and alcohol. Low toxicity.

Derivation: By thermochemical reduction of CsCl with calcium, or by electrolysis of fused cyanide. Its chief ore is pollucite, found in Maine, S. Dakota, Manitoba, Elba, S. Africa.

Hazard: Dangerous fire and explosion risk. Ignites spontaneously in moist air; may explode in contact with sulfur or phosphorus. Reacts violently with oxidizing materials. Causes burns on contact with skin.

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GENERAL PROPERTIES

Symbol:

Cs

Atomic Number:

55

Atomic Weight:

132.9054

Density:

1.873 gm/cc

Melting Point:

28.40 oC

Boiling Point:

669.3 oC

Thermal Conductivity:

0.359 W/cm/K @ 298.2 K

Electrical Resistivity:

20 microhm-cm @ 20 oC

Electronegativity:

0.7 Paulings

Specific Heat:

0.057 Cal/g/K @ 25 oC

Heat of Vaporization:

16.3 K-Cal/gm atom at 669.3 oC

Heat of Fusion:

0.5 Cal/gm mole

ALKALI METALS VIDEO CLIPS

 
 
 
 
alkali metal
 
Courtesy of Open University
 
 
 
 
 
 
 
 
 
 
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Alkali Metals

TYPICAL ANALYSES - Impurities in ppm

Material / Purity: 3N Material / Purity: 3N
Al 7 Fe 7
Mg 1 Mn <1
Ni <7 Pb <7
V <1 Ba <4
B <7 Ca 1
Cu <7 Cr <7
Si <7 Na <7
K <1 Rb <1
Be <1 Ag <1
Zr <13 Sn <7
Sr <1 Co <7
Ti <7 Mo <7

CESIUM PACKAGING

Cesium Standard   Cesium Breakseal
Cesium Pre-scored Ampoule   Cesium Breakseal Ampoule
 

SPECIFICATIONS:

Pre-Scored:

Size

O.D.

Length

Glass Type

1 Gram

10.5 mm

50-52 mm

Pyrex

5 Gram

16.6 mm

70 mm

Pyrex

25 Gram

22.5 mm

115 mm

Pyrex

50 Gram

28.5 mm

160 mm

Pyrex

CESIUM METAL

Material

Purity

Cesium Metal 1 gm Pre-Scored Ampoule 3N+
Cesium Metal 5 gm Pre-Scored Ampoule 3N+
Cesium Metal 25 gm Pre-Scored Ampoule 3N+
Cesium Metal 0.5 gm Breakseal Ampoule 3N+
Cesium Metal 10 gm Breakseal Ampoule 3N+

Cesium metals are packaged in glass ampoules under argon and sold by the gram or kilogram. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional specifications or custom requirements.

CESIUM COMPOUNDS

Material

Purity

Cesium Acetate CsC2H3O2  -100 Mesh msds1
2N
Cesium Carbonate Cs2CO3  -20 Mesh msds1
3N
Cesium Chloride CsCl  -60 Mesh msds1 2N
Cesium Chloride CsCl  -100 Mesh msds1 3N
Cesium Chromate CsCrO4  -20 Mesh msds1 3N
Cesium Fluoride CsF  -40 Mesh msds1 3N
Cesium Iodide CsI  -8 Mesh msds1 3N
Cesium Molybdate Cs2MoO4  -20 Mesh msds1 2N
Cesium Sulfate Cs2SO4  msds1
3N

Compounds are packaged in glass ampoules under argon and sold by the gram or kilogram. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional specifications or custom requirements.

 

Material Safety Data Sheet - MSDS
Cesium MSDS
Technical Data Sheets
Understanding Mesh Sizes

 

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