Sulfur trioxide

Base Information

• Chemical Name: Sulfur trioxide
• CAS No.: 7446-11-9
• Molecular Formula: SO3
• Molecular Weight: 80.0642
• European Community (EC) Number: 231-197-3
• ICSC Number: 1202
• UN Number: 1829
• UNII: HH2O7V4LYD
• DSSTox Substance ID: DTXSID1029673
• Nikkaji Number: J3.427D
• Wikipedia: Sulfur trioxide
• Wikidata: Q242715
• Mol file: 7446-11-9.mol

Synonyms:sulfur trioxide;sulfur trioxide, ion (1+);sulfur trioxide, ion (1-)

Chemical Property of Sulfur trioxide

Chemical Property:

• Appearance/Colour: Needles or polymer
• Melting Point: 16.8 °C(lit.)
• Boiling Point: 44.8 °C at 760 mmHg
• PSA: 83.30000
• Density: 2.27 g/cm³
• LogP: 0.29180
• Water Solubility.: reacts violently
• XLogP3: -0.5
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 3
• Rotatable Bond Count: 0
• Exact Mass: 79.95681503
• Heavy Atom Count: 4
• Complexity: 61.8
• Transport DOT Label: Corrosive Poison Inhalation Hazard

Purity/Quality:

Safty Information:

• Pictogram(s): O,T+,C
• Hazard Codes: C:Corrosive
• Statements: R14:; R34:
• Safety Statements: S25:; S36/37/39:; S45:; S8:

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Toxic Gases & Vapors -> Other Toxic Gases & Vapors
• Canonical SMILES: O=S(=O)=O
• Inhalation Risk: A harmful contamination of the air will be reached very quickly on evaporation of this substance at 20 °C.
• Effects of Short Term Exposure: The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion.
• Effects of Long Term Exposure: Repeated or prolonged inhalation of the aerosol may cause effects on the lungs. Repeated or prolonged inhalation of the aerosol may cause effects on the teeth. This may result in tooth erosion. Strong inorganic acid mists containing this substance are carcinogenic to humans.

Technology Process of Sulfur trioxide

There total 517 articles about Sulfur trioxide 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:

sulfur dioxide (7446-09-5,12143-17-8,89125-89-3) + oxygen (80937-33-3) → sulfur trioxide (7446-11-9) + ozone (10028-15-6)

Guidance literature:

In neat (no solvent); Irradiation (UV/VIS); photochemical oxidn. of SO2, equilibrium, ca. 300°C, cooling with H2O;;

Reference yield:

sulfur dioxide (7446-09-5,12143-17-8,89125-89-3) + oxygen (80937-33-3) → SO3*SO2 + sulfur trioxide (7446-11-9) + ozone (10028-15-6)

Guidance literature:

In solid matrix; Irradiation (UV/VIS); 0.5 h white light photolysis at λ >= 220 nm at 12 K, warmed up to 32 K; IR;

DOI:10.1021/j100282a013

Reference yield:

selenium oxychloride (7791-23-3) + sulfur (7704-34-9) → disulfur dichloride (10025-67-9) + sulfur trioxide (7446-11-9) + selenium(II) chloride (14457-70-6)

Guidance literature:

In neat (no solvent); on heating;;

DOI:10.1021/ja01434a005

upstream raw materials:

carbon disulfide

disulfuric acid carbonylamide chloride

2,3-disulfosuccinic acid

hydrogenchloride

Downstream raw materials:

3-pyridinesulfonic acid

4-Methyl-pyridin-3-sulfonsaeure

2-bromo-thiazole-5-sulfonic acid

4-chloro-quinoline-8-sulfonic acid

Refernces

• 1、 Gleason, James F.,Howard, Carleton J.. "Temperature Dependence of the Gas-Phase Reaction HOSO2+O2->HO2+SO3". . p. 3414 - 3417. Retrieved 1988.
• 2、 Frost, Ray L.,Palmer, Sara J.,Kristof, Janos,Horvath, Erzsebet. "Thermoanalytical studies of silver and lead jarosites and their solid solutions". . p. 73 - 79. Retrieved 2010.
• 3、 Pomeroy,O'Sullivan,Hampshire,Murtagh. "Degradation resistance of cordierite diesel particulate filters to diesel fuel ash deposits". . p. 746 - 753. Retrieved 2012.
• 4、 Duval. "". . p. 20. Retrieved 1959.
• 5、 Li, Jinghua,Zhang, Guien,Wang, Jinyun. "". . p. 219 - 226. Retrieved 1992.
• 6、 Xie, Zhilong Diane. "Formation Mechanism of Condensation Nuclei in Nighttime Atmosphere and the Kinetics of the SO2-O3-NO2 System". . p. 1543 - 1547. Retrieved 1992.
• 7、 Morrow, B. A.,McFarlane, R. A.,Lion, M.,Lavalley, J. C.. "". . p. 232 - 239. Retrieved 1987.
• 8、 Alemozafar, Ali R.,Madix, Robert J.. "Reaction of sulfur dioxide with Ni(1 0 0) and Ni(1 0 0)-p(2 × 2)-O". . p. 141 - 149. Retrieved 2005.
• 9、 Wickleder, Mathias S.,van Gerven, David. "S6N2O15—A Nitrogen-Poor Sulfur Nitride Oxide, and the Anhydride of Nitrido-tris-Sulfuric Acid". . p. 17169 - 17171. Retrieved 2020.
• 10、 Ustinov, V. I.,Grinenko, V. A.,Ivanov, S. G.. "". . . Retrieved 1988.