Oleum

Base Information

• Chemical Name: Oleum
• CAS No.: 8014-95-7
• Deprecated CAS: 17107-61-8
• Molecular Formula: H2O7S2
• Molecular Weight: 178.14
• Hs Code.: 28070000
• European Community (EC) Number: 616-954-1
• ICSC Number: 1447
• UN Number: 1831
• Mol file: 8014-95-7.mol

Synonyms:OLEUM;Fuming sulfuric acid;8014-95-7;Sulfuric acid fuming;Sulfuric acid, fuming;Oleum iodisum;Sulfuric acid (fuming);Oleum (Fuming Sulfuric acid);HSDB 1236;UN1831;Sulfuric acid, mixt with sulfur trioxide;Sulfur trioxide, mixt. with sulfuric acid;Sulfuric acid, fuming, 26-29%;Sulfuric acid, mixt. with sulfur trioxide;Oleum 65% by weight or more free sulfur trioxide (SO3);Sulfuric Acid (Oleum);OLM (CHRIS Code);sulfuric acid sulfur trioxide;sulfuric acid;sulfur trioxide;H2O4S.O3S;Oleum;(fuming sulfuric acid);H2-O4-S.O3-S;MFCD00137792;NA1831;AKOS032949926;Sulfuric acid, fuming > or =30% free sulfur trioxide [UN1831] [Corrosive];LS-148169;Sulfuric acid, fuming <30% free sulfur trioxide;Sulfuric acid, fuming, puriss. p.a., 20% SO3;Sulfuric acid, extra pure, fuming, 20-30% free SO3;Sulfuric acid, fuming > or =30% free sulfur trioxide;Sulfuric acid, fuming, JIS special grade, 30.0-33.0%;Sulfuric acid, fuming, JIS special grade, 60.0-63.0%;Sulfuric acid, fuming, ACS reagent, 15% free SO3 basis;Sulfuric acid, fuming, ACS reagent, 20% free SO3 basis;Sulfuric acid, fuming, ACS reagent, 30% free SO3 basis;Sulfuric acid, fuming, reagent grade, 20% free SO3 basis;Sulfuric acid, fuming, reagent grade, 30% free SO3 basis;Sulfuric acid, fuming <30% free sulfur trioxide [UN1831] [Corrosive];Sulfuric acid, fuming <30% free sulfur trioxide [UN1831] [Corrosive];Sulfuric acid, fuming > or =30% free sulfur trioxide [UN1831] [Corrosive];Sulfuric acid, fuming, reagent grade, 65.5-68.0% free SO3 basis (with NaOH)

 This product is a nationally controlled contraband, and the Lookchem platform doesn't provide relevant sales information.

Chemical Property of Oleum

Chemical Property:

• Appearance/Colour: liquid
• Vapor Pressure: 1 mm Hg ( 146 °C)
• Melting Point: 2 °C
• Boiling Point: 330 °C at 760 mmHg
• PKA: 1.92(at 25℃)
• PSA: 166.28000
• Density: 1.925 g/cm³
• LogP: 0.71980
• Storage Temp.: Store below +30°C.
• Sensitive.: Hygroscopic
• Solubility.: H2O: soluble
• Water Solubility.: Miscible with water.
• Hydrogen Bond Donor Count: 2
• Hydrogen Bond Acceptor Count: 7
• Rotatable Bond Count: 0
• Exact Mass: 177.92419475
• Heavy Atom Count: 9
• Complexity: 143
• Transport DOT Label: Corrosive

Purity/Quality:

Safty Information:

• Pictogram(s): C
• Hazard Codes: C
• Statements: 36/38-37-35-14-34
• Safety Statements: 26-30-45-36/37/39

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Toxic Gases & Vapors -> Acids, Inorganic
• Canonical SMILES: OS(=O)(=O)O.O=S(=O)=O
• Inhalation Risk: A harmful contamination of the air will be reached quickly on evaporation of this substance at 20 °C.
• Effects of Short Term Exposure: The substance is very corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Exposure could cause asphyxiation due to swelling in the throat. Inhalation of high concentrations may cause lung oedema, but only after initial corrosive effects on the eyes and the upper respiratory tract have become manifest. Inhalation may cause asthma-like reactions (RADS). Medical observation is indicated.
• Effects of Long Term Exposure: Repeated or prolonged contact with skin may cause dermatitis. Repeated or prolonged inhalation of the aerosol may cause effects on the lungs. Risk of tooth erosion upon repeated or prolongated exposure to an aerosol of this substance. Mists of this strong inorganic acid are carcinogenic to humans.
• Uses: Sulfuric acid probably is the most important industrial chemical of modern time. Most sulfuric acid manufactured is used by the fertilizer industry for making phosphoric acid and phosphate fertilizers. Sulfuric acid has numerous applications. Some major uses include extracting ores; pickling metal; making explosives; manufacturing dyes, glues, and parchment papers; producing nitric and other acids; purifying petroleum; preparing metal sulfates; and synthesizing many organics. Sulfuric acid also is used in lead storage batteries for automobiles. The lead storage battery was invented by Gaston Plante in 1859. Sulfuric acid is used heavily in sulfonation, estertification, oxidation, dehydration, and acid-base neutralization reactions. Sulfuric acid is a common laboratory reagent used for laboratory preparation of a large number of salts; as a dehydrating agent; as a component of chromic mixture for cleaning glassware; and in acid-base titration. The acid has been in wide usage in various industrial applications for more than two hundred years. Commercial concentrated acid has an assay of 95 to 98% H2SO4. Its normality is 36 N and density 1.834 to 1.836 g/mL. 65% Sulfur Trioxide (Fuming) in Sulfuric Acid is a useful reagent that is widely used in the preparation of various compounds. It has been used for processing sulfonated polyoxadizole into ion-conducting films. In manufacture of fertilizers, explosives, dyestuffs, other acids, parchment paper, glue, purification of petroleum, pickling of metal.
• Description: Fuming sulfuric acid is also called oleum, which is a trade name. It is a heavy, oily liquid, colorless to dark brown depending on purity, and fumes strongly in moist air and is extremely hygroscopic. Fuming sulfuric acid is a solution of sulfur trioxide in sulfuric acid. Sulfur trioxide is forced into solution with sulfuric acid to the point that the solution cannot hold any more. As soon as the solution is exposed to air, the fuming begins, forming dense vapor clouds. It is violently water reactive, as are most acids. Oleum is also a strong irritant to tissue. The four-digit UN identification number is 1831.
• Physical properties: Dithionic acid, H2S2O6, is a chemical compound known only in solution. This acid is dibasic and salts called dithionates are known. All dithionates are readily soluble in water. They are mild oxidizing and mild reducing agents.