Chemical Property of Barium selenide [MI]
Chemical Property:
- Appearance/Colour:crystalline solid
- Melting Point:1780ºC
- Boiling Point:°Cat760mmHg
- Flash Point:°C
- PSA：0.00000
- Density:5020 kg m-3
- LogP:-0.26830
- Water Solubility.:decomposed by H2O [MER06]
- Hydrogen Bond Donor Count:0
- Hydrogen Bond Acceptor Count:1
- Rotatable Bond Count:0
- Exact Mass:217.82177
- Heavy Atom Count:2
- Complexity:0
- Purity/Quality:
-
99% *data from raw suppliers
BARIUM SELENIDE 95.00% *data from reagent suppliers
Safty Information:
- Pictogram(s):
- Hazard Codes:
- MSDS Files:
-
SDS file from LookChem
Useful:
- Canonical SMILES:[Se-2].[Ba+2]
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Description
Barium selenide has the molecular formula of BaSe and the molecular weight of 216.2956 g/mol. Its CAS
number is 1304-39-8. It is a white crystalline powder
having a melting point of 1782°C. Its density is 5.02 g/cm3. It reacts with water so that an aqueous
method of precipitation cannot be used to prepare
BARIUM SELENIDE. Barium selenide is very moisture
sensitive, and must be handled under inert conditions.
It can be prepared by reaction of the oxide or
carbonate with Se, or by the reduction of the selenate
with hydrogen gas:
2BaCO3+ 5Se+ Heat ? 2BaSe+ 3SeO2+ CO2
BaSeO4+ 4H2 ? BaSe+ 4H2O
Strontium selenide and barium selenide both have
a simple cubic structure, with cube edges equal to
3.117? and 3.308 ? , respectively.
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Uses
In photocells, semiconductors. Barium selenide has been used to construct a photocell
that has been used extensively to measure the solar
irradiance of the Sun at various points on the globe. It is
used because other photocell elements like selenium
tend to decline in output and saturate under the intense
radiance of the Sun. BaSe remains quasi-linear and can
be used to measure intensity from 2000 ? to 7200 ?
using a double monochrometer as a spectrum analyzer.
As a portable unit, it uses narrowband (20–50 ? halfwidth)
interference glass filters in 14 steps as a spectrum
analyzer over the range 3100 ? to 16,300 ? , but the
recording is manual. The field of view is <3° of the solar
irradiance over the face of the Sun.
BaSe is available commercially as a sputtering target
or in limited quantities as a powder.
