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Selenium Dioxide

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Selenium Dioxide / CAS : 7446-08-4

Appearance White or light yellow monoclinic or tetragonal crystal, with hygroscopic and irritating sour taste. Soluble in water, ethanol, acetone, acetic acid and benzene. UN 2811/3283
HS 28112900 DG Class 6.1
Synonyms Selenious Acid Anhydride; Selenious Anhydride; Selenium Aa/Icp Calibration/Check Standard; Selenium Aa Single Element Standard; Selenium, Aas Standard Solution; Selenium Aa Standard; Selenium Atomic Absorption Single Element Standard; Selenium Atomic Absorption Standard
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Overview

Uses

Properties

Summary

Formula
O2Se
Molecular Mass
110.95900
Exact Mass
111.90600
PSA
34.14000
Logp
-0.61840
IUPAC
selenium dioxide
SMILES
O=[Se]=O

Attribute classification

Matter Classification
inorganic
Category
Inorganic Chemicals > Oxides And Peroxides

Chemical and Physical Properties

Melting Point
315 °C (subl.)(lit.)
Density
4.81 g/mL at 25 °C(lit.)
Boiling Point
684.9 °C(lit.)
Flash Point
315ºC
Appearance
White or light yellow monoclinic or tetragonal crystal, with hygroscopic and irritating sour taste. Soluble in water, ethanol, acetone, acetic acid and benzene.

Export information

HS Code
28112900
Export Rebate
0%
UN No.
2811/3283
DG-Class
6.1
Risk Code
36/38-50/53-33-23/25-51/53-20/22
Safety Label
T;,N,Xn

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