What is the action of concentrated sulphuric acid on aniline

A dichloroderivative ( A ) on treating with K C N followed by acid hydrolysis and heating gives a monobasic acid ( B ) along with liberation of C O 2 ​ ( B ) on heating with liquid ammonia followed by treating with B r 2 ​ / K O H gives ( C ) which on treating with N a N O 2 ​ and H C l at low temperature followed by oxidation gives a monobasic acid ( D ) having molecular mass 7 4. C in the whole process would be:

From kinetic and product studies it has been concluded that the sulphonation of anilinium sulphate in a large excess of 99.99–102.3% H 2SO 4 at 25 °C proceeds by direct electrophilic attack of the sulphonating entity H 3S 2O 7 + on the aromatic ring of the anilinium cation. The main products are m-aminobenzenesulphonic and sulphanilic acid, the amount of o-aminobenzenesulphonic acid being <2%. In an excess of concentrated aqueous sulphuric acid at elevated temperatures anilinium sulphate is converted into o-aminobenzenesulphonic and sulphanilic acid as the main products. Phenylsulphamic acid was previously thought to bean intermediate in the sulphonation of aniline in ca. 97% H 2SO 4 at 100 °C. Phenylsulphamic acid itself does not yield any m-aminobenzenesulphonic acid. Accordingly, the formation of 5–15% of m-aminobenzenesulphonic acid from anilinium sulphate in 96.8–99.9% H 2SO 4 at 60–100 °C indicates that the reaction under the given conditions proceeds at least partially by direct ring sulphonation of the anilinium ion. Aromatic sulphonation. Part 59. Sulphonation of aniline in concentrated aqueous and fuming sulphuric acid P. K. Maarsen and H. Cerfontain, J. Chem. Soc., Perkin Trans. 2, 1977, 1008 DOI: 10.1039/P29770001008 To request permission to reproduce material from this article, please go to the If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given. If you are the author of this ...

Paraldehyde Maximum paraldehyde concentrations are reached in the CSF 30–60 min after oral or IM administration. From: Encyclopedia of Toxicology (Third Edition), 2014 Related terms: • Solvation • Potassium • Styrene • Butadiene • Poly(propylene) • Acrylonitrile • Saturated Solution • Environmental Stress Cracking • Aqueous Solution M. Abdollahi, A. Nili-Ahmadabadi, in Encyclopedia of Toxicology (Third Edition), 2014 Abstract Paraldehyde was introduced into medical practice more than 100 years ago and it was used clinically as a sedative, hypnotic, and antiepileptic agent. Paraldehyde slowly oxidizes in air, turning brown, and producing an odor of acetic acid. It quickly reacts with most plastics and rubber. Paraldehyde is also used in resin manufacture, as a preservative, and in other processes as a solvent. Paraldehyde overdose, produces symptoms similar to those of chloral hydrate overdose which may include coma, severe hypotension, respiratory depression, pulmonary edema, and cardiac failure. Prolonged use of paraldehyde may produce tolerance and physical and/or psychological dependence. Paraldehyde may enter the environment via industrial effluents or hospital wastes. Acetaldehyde and acetic acid are two products of degradation of paraldehyde. This compound and its degradation products may be released into water, soil, or atmosphere and then they may be removed from the atmosphere by precipitation. Agent Name Mode of Interaction Barbiturates Concomitant use of paralde...

Table of Contents • • • • • • • What happens when aniline reacts with sulphuric acid? Aniline reacts with conc. sulphuric acid to give anilinium hydrogen sulphate which on heating with sulphuric acid at 453-473 K gives p-aminobenzene sulphonic acid (sulphanilic acid ) as a major product. How is sulphuric acid prepared from aniline? Aniline on heating with sulphuric acid gives sulphanilic acid. i) First aniline reacts with H2SO4 to form anilinium hydrogen sulphate. ii) Second anilinium hydrogen sulphate on heating at 180-200 ℃ gives sulphanilic acid. What is salt of sulfuric acid? sulfuric acid always produces salts that end in sulfate and contain the sulfate ion, SO. When aniline is treated with sulfuric acid? We also know that aniline undergoes sulfonation reaction where it reacts with concentrated sulphuric acid resulting in the formation of anilinium hydrogen sulphate as an intermediate which on further heating with sulphuric acid at a temperature of about $453 – 473K$ or simply at $C$, produces a para- … When aniline is treated with fuming sulphuric acid it forms? Aniline hydrogen sulphate on heating forms a mixture of o- and p-amino sulphonic acid. When aniline is heated with fuming sulphuric acid it forms? Aniline hydrogen sulphate on heating forms a mixture of ortho and para aminobenzene sulphonic acids. Which of the following compound will be formed when aniline reacts with h2so4? For example, reaction of aniline with sulfuric acid at 180 °C produces sulfanilic aci...