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Here you find important compounds for laboratory, hobby & collection. Because of technical reasons we can not show all of the compounds we sell. Just ask us for any material, we will send you the best offer.

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 Ytterbium Oxide 99.99% - Yb2O3 - 50 grams  Art. Nr. 001627  
Ytterbium Oxide 99.99% - Yb2O3 - 50 grams
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Ytterbium Oxide, also called Ytterbia, is being applied to numerous fiber amplifier and fiber optic technologies, High purity Ytterbium Oxide is widely applied as a doping agent for garnet crystals in lasers a important colourant in glasses and porcelain enamel glazes.

Amount: 50g
Purity : 99.99%
Packing: Poly bag
30.00
- tax free
5-9 pcs.: 29.00 Euro
>9 pcs.: 27.00 Euro
Availability: 74 in stock

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 Holmium(III)-Oxide 99,99% - Ho2O3 - 10.0 grams  Art. Nr. 003755  
Holmium(III)-Oxide 99,99% - Ho2O3 - 10.0 grams
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Holmium(III)-Oxide 99,99% - Ho2O3 - 10.0 grams

Holmium(III) oxid, oder Holmiumoxid ist eine chemische Verbindung des Seltenerdmetalls Holmium und Sauerstoff mit der Formel Ho2O3. Zusammen mit Dysprosium(III)-oxid (Dy2O3) ist es eines one of the most powerfully paramagnetic substances known. The oxide, also called holmia, occurs as a component of the related erbium oxide mineral called erbia. Typically the oxides of the trivalent lanthanides coexist in nature and separation of these components requires specialized methods. Holmium oxide is used in making specialty colored glasses. Glass containing holmium oxide and holmium oxide solutions have a series of sharp optical absorption peaks in the visible spectral range. They are therefore traditionally used as a convenient calibration standard for optical spectrophotometers.
Holmium oxide has some fairly dramatic color changes depending on the lighting conditions. In daylight, it is a tannish yellow color. Under trichromatic light, it is a fiery orange red, almost indistinguishable from the way erbium oxide looks under this same lighting. This is related to the sharp emission bands of the phosphors. Holmium oxide has a wide band gap of 5.3 eV and thus should appear colorless. The yellow color originates from abundant lattice defects (such as oxygen vacancies) and is related to internal transitions at the Ho3+ ions.

Amount: 10,0g
Purity : 99.99%
Packing: Glass vial
19.00
- tax free
5-9 pcs.: 18.00 Euro
>9 pcs.: 17.00 Euro
Availability: 71 in stock

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 Hafnium diboride HfB2 5 grams - 99.5%  Art. Nr. 001543  
Hafnium diboride HfB2   5 grams - 99.5%
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Hafnium boride - Hafnium diboride HfB2

Melting point: ~3250°C - A light grey metallic powder, chemically attacked very little by cold HCl, more rapidly by HNO3, and is dissolved by aqua regia. It reacts with H2SO4 and is readily attacked by fused alkali hydroxides, carbonates and disulfides. Produced by various processes.

Useful in nuclear applications because of the presence of Boron-10. Other applications include use of its relatively high conductivity, especially for a ceramic.

Danger
GHS Classification:

H228 Flammable solid
P210 Keep away from heat/sparks/open flames/hot surfaces – No smoking
P240 Ground/bond container and receiving equipment
P241 Use explosion-proof electrical/ventilating/light/…/equipment
P280 Wear protective gloves/protective clothing/eye protection/face protection
P370+P378 In case of fire Use … for extinction

 
Amount: 5g
Purity : ~99.5%
Packing: glass bottle
25.00
- tax free
5-9 pcs.: 24.00 Euro
>9 pcs.: 23.00 Euro
Availability: 40 in stock

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