Benzenesulfonic acid is used as an acid catalyst. The sodium salt is used to standardize dyes. A variety of pharmaceutical drugs are prepared as benzenesulfonate salts and are known as besilates (INN) or besylates (USAN).

What is the name of SO3H?

Sulfonic acid
SO3H (Sulfonic acid) – Preparation, Chemical Reactions & Applications of SO3H.

What is benzene sulphonic acid used for?

Benzenesulfonic acid is used as an acid catalyst. The sodium salt is used to standardize dyes. A variety of pharmaceutical drugs are prepared as benzenesulfonate salts and are known as besilates (INN) or besylates (USAN).

What is benzene sulfonate?

Description. Benzenesulfonate is the simplest of the class of benzenesulfonates, in which the benzene nucleus carries no other substituents. It is a conjugate base of a benzenesulfonic acid.

How does benzene react with H2SO4?

Benzene undergoes electrophilic aromatic substitution with sulfuric acid to give the corresponding sulfonic acids. Was this answer helpful?

What is SO3H group?

A sulfonic acid (or sulphonic acid) refers to a member of the class of organosulfur compounds with the general formula R−S(=O)2−OH, where R is an organic alkyl or aryl group and the S(=O)2(OH) group a sulfonyl hydroxide.

Is benzene a carcinogen?

The Department of Health and Human Services (DHHS) has determined that benzene causes cancer in humans. Long-term exposure to high levels of benzene in the air can cause leukemia, cancer of the blood-forming organs.

Is benzenesulfonic acid a carcinogen?

Benzoic acid can become carcinogenic. It is important to know that when sodium benzoate combines with ascorbic acid (vitamin C), it can form a known carcinogen called benzene. “Benzene is among the 20 most widely used chemicals in the United States.

Is benzenesulfonic acid toxic?

Chemical dangers This produces toxic and corrosive fumes. The solution in water is a strong acid. It reacts violently with bases and is corrosive. Reacts violently with oxidants.

How do you remove so3h from benzene?

The sulfonation of benzene is a reversible reaction. Thus, we can remove a sulfonic acid group by heating the compound with an acid. The reaction with steam alone is often sufficient for desulfonation.

Is SO3H electron withdrawing?

Electron withdrawing (highly electronegative) nature outweighs donation of electron density through a lone pair. Atoms with pi-bonds to electronegative groups – Strongly deactivating. NO2, CN, SO3H, CHO, COR, COOH, COOR, CONH2. All pi-acceptors.

What is the effect of SO3H on the electron density of benzene?

Hence, it decreases the electron density at ortho and para positions on a Benzene ring. SO3H is a weaker -R group as compared to NO2 and hence less deactivating.

What is the sulphonation of benzene?

Sulphonation of benzene are addition of Sulphonic group (SO3H) to benzene. When benzene is react with fuming sulphuric acid in the presence of H2SO4 then it give benzene sulphonic acid, (C6H6+SO3H) as shown in figure. fuming sulphuric acid is also be written as (H2SO4+SO3).

What is the inductive effect of-SO3H group on benzene ring?

Beside inductive effect of -SO3H group, conjugation from pi bond between S and O can withdraw electrons from the benzene ring as well, but this effect is weaker. Since S atom is relatively bigger than C atom, their p-orbitals cannot overlap as well as those of C atoms in benzene ring.

How do you make benzene with sulfuric acid?

Sulfonation of Benzene. Sulfonation is a reversible reaction that produces benzenesulfonic acid by adding sulfur trioxide and fuming sulfuric acid. The reaction is reversed by adding hot aqueous acid to benzenesulfonic acid to produce benzene.