1304-39-8 Usage
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
this compound. 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.
Chemical Properties
Crystalline powder. Decomposes in water.
Uses
Different sources of media describe the Uses of 1304-39-8 differently. You can refer to the following data:
1. In photocells, semiconductors.
2. 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.
Check Digit Verification of cas no
The CAS Registry Mumber 1304-39-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,3,0 and 4 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1304-39:
(6*1)+(5*3)+(4*0)+(3*4)+(2*3)+(1*9)=48
48 % 10 = 8
So 1304-39-8 is a valid CAS Registry Number.
InChI:InChI=1/Ba.Se/q+2;-2
