Sulfur trioxide, reactions with

Sulfur trioxide, reaction with cyanogen chloride, 46, 24... 

The sulfonation of LAB can be carried out with concentrated sulfuric acid, oleum, or sulfur trioxide (S03). With the first two sulfonation reagents large quantities of waste sulfuric acid are obtained, which must be disposed of or processed further. Therefore the use of S03 is preferred. Special reactions were developed for sulfonation using S03 (Table 13). For sulfonation in batch pro-... 

Sulfur trioxide converts alcohols to acid alcohol sulfates directly [Eq. (1)]. It is thought that sulfur trioxide reacts with the hydroxyl group forming firstly an alkyl hydrogen pyrosulfate which decomposes to alkyl hydrogen sulfate. The first reaction ... 

In the most common process for making sulfuric acid, sulfur is burned at a very high temperature in dry air to make sulfur dioxide, which is then reacted with more oxygen over a catalyst to make sulfur trioxide. Reaction of sulfur trioxide with water produces sulfuric acid. 

The complexes of sulfur trioxide with various nucleophiles (dioxane, pyridine etc.) are mild sulfonating reagents. Unlike other complexes of sulfur trioxide, dimethyl sulfide-sulfur trioxide readily adds to conjugated multiple bonds. Consequently, not only the sulfo group but also the dimethyl sulfide group add at the multiple bond. The reactions of dimethyl sulfide-sulfur trioxide complex with butadiene, isoprene and 2,3-dimethylbutadiene take place as conjugated l,4- -additions of dimethyl sulfide and sulfonate groups at the double bonds of the diene (equation 103).124... 

The physical properties of the metal (Table II) resemble those of thallium, lead and bismuth, its neighbors in the Periodic Table, rather than those of tellurium, its lower homologue. The low melting and boiling points are particularly noteworthy an attempted study of the Hall effect in polonium metal has also been reported (90). In chemical properties the metal is very similar to tellurium, the most striking resemblance being in its reactions with concentrated sulfuric acid (or sulfur trioxide) and with concentrated selenic acid. The products are the bright red solids, PoSOs and... 

Bulk aluminum may undergo the following dangerous interactions exothermic reaction with butanol, methanol, 2-propanol, or other alcohols, sodium hydroxide to release explosive hydrogen gas. Reaction with diborane forms pyrophoric product. Ignition on contact with niobium oxide + sulfur. Explosive reaction with molten metal oxides, oxosalts (nitrates, sulfates), sulfides, and sodium carbonate. Reaction with arsenic trioxide + sodium arsenate + sodium hydroxide produces the toxic arsine gas. Violent reaction with chlorine trifluoride, Incandescent reaction with formic acid. Potentially violent alloy formation with palladium, platinum at mp of Al, 600°C. Vigorous dissolution reaction in... 

ACETATO MERCURIOSO (Spanish) (21908-53-2) A strong oxidizer. Violent reaction with reducing agents, acetyl nitrate, diboron tetrafluoride, disulfur dichloride, combustible materials, fuels, hydrazine hydrate, hydrogen peroxide, hydrogen trisulfide, hypophospho-rous acid, methanethiol, phospham. sodium-potassium alloy, sulfur, sulfur trioxide. Incompatible with alcohols, alkali metals, ammonium nitrate, diboron tetrafluoride, hydrazinium nitrate, hydrogen sulfide, nitroalkanes, rubidium acetylide, selenium oxychloride. Forms heat-, friction-, or shock-sensitive explosives with anilinium perchlorate, chlorine, phosphorus,. sulfur, magnesium, potassium, sodium-potassium alloy. May increase the explosive or thermal sensitivity of nitromethane, nitroethane, 1-nitropropane and other lower nitroalkanes, silver azide, hydrazinium perchlorate. Slowly decomposes on exposure to air. 

YELLOW OXIDE of MERCURY (21908-53-2) A strong oxidizer. Violent reaction with reducing agents, acetyl nitrate, diboron tetrafluoride, disulfur dichloride, combustible materials, fuels, hydrazine hydrate, hydrogen peroxide, hydrogen trisulfide, hypophosphorous acid, methanethiol, phospham, sodium-potassium alloy, sulfur, sulfur trioxide. Incompatible with... 

Conunercially available PES can be sulfonated using sulfur trioxide, triethyl phosphate (TEP) complexes of sulfur trioxide, and chlorosulfonic acid. Due to the high reactivity of sulfur trioxide and its potent dehydration properties, sulfonation reactions with sulfur trioxide sometimes result in the formation of highly insoluble polymer dispersions due to crosslinking caused by inter-polymer chain sulfone formation. In these situations, it is preferable to moderate the sulfonation reactivity by utilization of the sulfur trioxide complexes with TEP. 

The use of sulfur trioxide as a sulfonating agent is often inconvenient, and reactions carried out with it are usually vigorous and difficult to control. The addition compounds-that sulfur trioxide forms with tertiary amines and other strong electron donors, however, have been found to be very convenient sulfonating agents. Procedures for the preparation of three typical compounds, pyridine-sulfur trioxide, CsHsN-SOa dimethylaniline-sulfur trioxide, CeHs-N(CH3)2 SOs and dioxane-sulfur trioxide, 0(CH2 CH2)20 -SO3, are presented here. 

Write a balanced chemical equation for the reaction of sulfur dioxide with molecular oxygen to produce sulfur trioxide. What compound is formed when sulfur trioxide reacts with water ... 

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