44 101.070
Ru
Ruthenium

Ruthenium , Ru

Ruthenium is a chemical element that has the symbol Ru and atomic number 44. A rare transition metal of the platinum group of the periodic table, ruthenium is found associated with platinum ores and used as a catalyst in some platinum alloys.

 

  • Listed below are a selection of some more commonly used sizes. If you do not see anything that suits your needs, please click on the custom request forms and send us your requirements.
View Product Specification
Filter

Form

R4-5000-M

Ru Pieces 1-4mm 99.95% Pure

Ruthenium

R4-5002-M

Ru <10mm Pieces 99.95% Pure

Ruthenium

R4-10002-P

RuCl3 -100 mesh 99.9% Pure

Ruthenium Chloride

8 UN1759 PG III Corrosive

R4-10003-P

RuO2 -100 mesh 99.9% Pure

Ruthenium Oxide

R4-2001-R

Ru Rod 3.18mm diameter 99.95% pure

Ruthenium

R4-2002-R

Ru Rod 6.35mm diameter 99.95% pure

Ruthenium

R4-2003-R

Ru Rod 12.7mm diameter 99.95% pure

Ruthenium

R4-2004-R

Ru Rod 1mm dia. x 15mm long 99.99% Pure

Ruthenium

R4-2005-R

Ru Rod 2mm (+0/-0.2) dia. x 27mm long 99.95% Pure

Ruthenium

R4-2006-R

Ru Rod 2mm dia. x 30mm long (+0/-0.2) 99.95% Pure

Ruthenium

R4-2007-R

Ru Rod 2mm dia. x 25mm long 99.95% Pure

Ruthenium

R4-9000-D

Ruthenium Ru,

Available Purities 99.95% & 99.99%

R4-9002-D

Ruthenium oxide RuO2,

Purity 99.95%

R4-9003-D

Ruthenium Tantalum Ru-Ta,

Available in various ratios wt% or at%, Purity 99.95% & 99.99%

R4-9000-D9

Ru TRG 50mm dia. x 3mm Tk 99.95% Pure

Ruthenium

R4-9002-D1

RuO2 TRG 50.8mm dia. x 3.18mm Tk 99.95% Pure

Ruthenium oxide

R4-9002-D2

RuO2 TRG 50.8mm dia. x 6.35mm Tk 99.95% Pure

Ruthenium oxide

R4-9002-D4

RuO2 TRG 50.8mm dia. x 3.18mm Tk 99.95% Pure

Ruthenium Oxide

R4-9002-D5

RuO2 TRG 25.4mm dia. x 6.35mm Tk 99.95% Pure

Ruthenium Oxide

R4-9002-D6

RuO2 TRG 76.2mm dia. x 3mm Tk 99.95% Pure

Ruthenium oxide

R4-9002-D7

RuO2 TRG 50.8mm dia. x 5mm Tk 99.9%+ Pure

Ruthenium Oxide

RU-ST-1-3-3N5
Ru TRG 25.4mm dia. x 3mm Tk (+/-0.25mm)99.95% PureRuthenium
RU-ST-2-3-3N5
Ru TRG 50.8mm dia. x 3mm Tk 99.95% PureRuthenium
RU-ST-2-6-3N5
Ru TRG 50.8mm dia. x 6mm Tk 99.95% PureRuthenium
RU-ST-3-3-3N5
Ru TRG 76.2mm dia. x 3mm Tk 99.95% PureRuthenium
RU-ST-4-3-3N5
Ru TRG 101.6mm dia. x 3mm Tk 99.95% PureRuthenium
RU-ST-4-6-3N5
Ru TRG 101.6mm dia. x 6mm Tk 99.95% PureRuthenium

A polyvalent hard white metal, ruthenium is a member of the platinum group, has four crystal modifications and does not tarnish at normal temperatures, but does oxidize readily on exposure to air to form ruthenium tetroxide, RuO4, a strong oxidising agent with properties analogous to those of osmium tetroxide. Ruthenium dissolves in fused alkalis, is not attacked by acids but is attacked by halogens at high temperatures. Small amounts of ruthenium can increase the hardness of platinum and palladium. The corrosion resistance of titanium is increased markedly by the addition of a small amount of ruthenium.

This metal can be plated either through electrodeposition or by thermal decomposition methods. One ruthenium-molybdenum alloy has been found to be superconductive at 10.6 K. The oxidation states of ruthenium range from +1 to +8, and -2 is known, though oxidation states of +2, +3, and +4 are most common.

Symbol Ru
Atomic number 44
No. of naturally occurring isotopes 7
Atomic weight 101.07(+/-3)
Electronic configuration [Kr]4d75s1
Metal radius(12-coordinate)/pm 134
Ionic radius(4-coordinate)/pm VIII 36
Ionic radius(4-coordinate)/pm VII 38
Ionic radius(6-coordinate)/pm V 56.5
Ionic radius(6-coordinate)/pm IV 62
Ionic radius(6-coordinate)/pm III 68
Density (20°C)/gcm3 12.41
Melting point / °C 2282(+/-20)
Boiling point / °C 4050(+/-100)
ΔHfus/kJmol-1 -25.5
ΔHvap/kJmol-1 -
ΔHf(monoatomic gas)/kJmol-1 640
Electrical resistivity
(20°C)/μohm cm 6.71
Ionization energy/kJmol-1 I 711
Ionization energy/kJmol-1 II 1617
Ionization energy/kJmol-1 III 2747
Temperature (oC) @Vap. Pressure
10-8 Torr
10-6 Torr
10-4 Torr
Techniques
Electron Beam Poor
Crucible -
Coil -
Boat Tungsten
Remarks
Spits violently in EB, requires degas.