Selenium dioxide

Base Information

• Chemical Name: Selenium dioxide
• CAS No.: 7446-08-4
• Deprecated CAS: 12397-00-1
• Molecular Formula: SeO2
• Molecular Weight: 110.959
• Hs Code.: 2811290090
• European Community (EC) Number: 231-194-7,235-738-4
• ICSC Number: 0946
• NSC Number: 56753
• UN Number: 3283,2811
• UNII: 9N3UK29E57
• DSSTox Substance ID: DTXSID4021264
• Nikkaji Number: J3.426F
• Wikipedia: Selenium(IV) oxide,Selenium dioxide,Selenium_dioxide
• Wikidata: Q411386
• ChEMBL ID: CHEMBL3183452
• Mol file: 7446-08-4.mol

Synonyms:Dioxide, Selenium;Monoxide, Selenium;Oxide, Selenium;Oxides, Selenium;selenium dioxide;Selenium Monoxide;selenium oxide;Selenium Oxides;selenium trioxide;Trioxide, Selenium

Chemical Property of Selenium dioxide

Chemical Property:

• Appearance/Colour: light pink solid
• Melting Point: 315 °C (subl.)(lit.)
• Boiling Point: 684.9 °C(lit.)
• Flash Point: 315oC
• PSA: 34.14000
• Density: 3.95 g/cm³
• LogP: -0.61840
• Water Solubility.: 38.4 g/100 mL (14℃)
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 2
• Rotatable Bond Count: 0
• Exact Mass: 111.90635
• Heavy Atom Count: 3
• Complexity: 18.3
• Transport DOT Label: Poison

Purity/Quality:

99.9% ^*data from raw suppliers

Safty Information:

• Pictogram(s): T,N,Xn
• Hazard Codes: T:Toxic;;
• Statements: R23/25:; R33:; R50/53:
• Safety Statements: S20/21:; S28A:; S45:; S60:; S61:

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Other Classes -> Other Inorganic Compounds
• Canonical SMILES: O=[Se]=O
• Inhalation Risk: Evaporation at 20 °C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.
• Effects of Short Term Exposure: The substance is corrosive to the eyes, skin and respiratory tract. Inhalation may cause lung oedema. The substance may cause effects on the eyes. This may result in allergic-type reaction of the eyelids (rose eye). Medical observation is indicated.
• Effects of Long Term Exposure: Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the respiratory tract, gastrointestinal tract, central nervous system and liver. This may result in nasal irritation, persistent garlic odour, stomach pain, nervousness and liver impairment.

Technology Process of Selenium dioxide

There total 254 articles about Selenium dioxide which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

ozone (10028-15-6) + diselenium dichloride (10025-68-0) → selenium(IV) oxide (7446-08-4) + selenium tetrachloride (10026-03-6)

Guidance literature:

In not given; byproducts: O2;

Reference yield:

aluminium selenite → aluminum oxide (1333-84-2,1344-28-1) + selenium(IV) oxide (7446-08-4)

Guidance literature:

In neat (no solvent); isothermal heating of Al selenite in open Pt crucible in N2 flow (25 cm**3/min), temp. interval of 723-923 K; Kinetics;

DOI:10.1007/s10973-005-6918-y

Reference yield:

lead (7439-92-1) + selenium oxychloride (7791-23-3) → selenium(IV) oxide (7446-08-4) + diselenium dichloride (10025-68-0) + lead(II) chloride (7758-95-4)

Guidance literature:

In neat (no solvent);

DOI:10.1021/ja01662a009

upstream raw materials:

dimethoxy selenium dioxide

diethoxy selenium dioxide

triselenium dicyanide

hydrogen cyanide

Downstream raw materials:

pyridine-4-carbaldehyde

nicotinic acid

2-Picolinic acid

2-pyridinecarboxaldehyde N-oxide

Refernces

• 1、 Vlaev,Georgieva,Gospodinov. "Kinetics of isothermal decomposition of ZnSeO3 and CdSeO 3". . p. 163 - 168. Retrieved 2005.
• 2、 Gospodinov,Stancheva. "A study of the selenites of cerium phase states in aqueous medium and thermal properties". . p. 859 - 865. Retrieved 2003.
• 3、 Larranaga, Aitor,Mesa, Jose L.,Lezama, Luis,Arriortua, Maria I.,Rojo, Teofilo. "Mild Hydrothermal Synthesis of Cu(SeO3).2H2O: Structural Characterization, Thermal, Spectroscopic and Magnetic Studies". . . Retrieved 2009.
• 4、 Ling, Jie,Albrecht-Schmitt, Thomas E.. "Syntheses, structures, and properties of Ag4(Mo2O5)(SeO4)2(SeO3) and Ag2(MoO3)3SeO3". . p. 1601 - 1607. Retrieved 2007.
• 5、 Muspratt, S.. "". . p. 52 - 70. Retrieved 1850.
• 6、 Grzechnik, Andrzej,Farina,Lauck,Syassen,Loa,Bouvier. "Pressure-induced structural deformations in SeO2". . p. 184 - 191. Retrieved 2002.
• 7、 Lian, Zhaoxun,Zhang, Jiamin,Gu, Yongqing,Wang, Tianxi,Lou, Tianjun. "Synthesis and crystal structures of two inorganic-organic hybrid vanadium selenites with layered structures: (DABCOH2)[(VO2)(SeO3)]2·1.25H2O and (pipeH2)[(VO)2(C2O . p. 122 - 127. Retrieved 2009.
• 8、 Verma,Khushu. "Thermal and other studies on bivalent metal selenites". . p. 1157 - 1164. Retrieved 1989.
• 9、 Chaparro,Gutiérrez,Herrero. "Quartz-crystal microbalance study of the growth of Zn(Se,O) thin-films in a chemical bath. A sequential electroless-chemical process". . p. 977 - 986. Retrieved 2001.
• 10、 Lenher, V.. "". . p. 550 - 554. Retrieved 1904.