What is acetone, and where is it commonly used?

Acetone is a simple, symmetrical ketone with the molecular formula CH3COCH3. It is widely used as a solvent in nail polish removers, cleaning agents, and in the production of plastics and synthetic fibers.

Why is acetone considered a symmetrical ketone?

Acetone is a symmetrical ketone because its carbonyl group (C=O) is flanked by two identical methyl groups (-CH3).

Is acetone polar or non-polar?

Acetone is polar due to the presence of the carbonyl group, which creates a dipole moment. However, it can also dissolve non-polar substances, making it a versatile solvent.

Is acetone flammable?

Yes, acetone is highly flammable with a flashpoint of −20∘C. Care should be taken when handling it near open flames or heat sources.

Frequently Asked Questions

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Acetone

1.0Introduction to Acetone

Acetone, also known as propanone (CH₃COCH₃), is the simplest and most well-known example of a symmetrical ketone. In a symmetrical ketone, the carbonyl group (C=O) is flanked by two identical alkyl groups. In the case of acetone, these groups are methyl groups (-CH₃). General Properties of acetone are-

Chemical Formula: CH₃COCH₃

IUPAC Name: Propan-2-one
Common Name: Acetone

2.0Structure of Acetone

3.0Properties of Acetone

Physical Properties of Acetone

Property	Details
Appearance	Colorless liquid with a distinct, sweet odor.
Boiling Point	56.05^∘C
Melting Point	−94.8^∘C
Density	0.791 g/cm³
Solubility	Completely miscible with water, alcohol, and most organic solvents.

Chemical Properties of Acetone

Property	Details
Polar Solvent	Highly polar due to its carbonyl group (C=O).
Flammability	Highly flammable with a flashpoint of −20^∘
Reactivity	- Reacts with oxidizing agents to form acetic acid or carbon dioxide.
	- Undergoes aldol condensation in the presence of a base or acid to form mesityl oxide.

Polarity and Solvent Properties:

Acetone is a polar molecule due to the electronegative oxygen atom in the carbonyl group.
It is an excellent solvent for organic and some inorganic compounds, dissolving polar and nonpolar substances.

4.0Chemical Reactions of Acetone

Oxidation: Strong oxidizing agents can oxidize acetone to form acetic acid (CH3COOH), carbon dioxide, and water.

CH₃COCH₃ + [O] → CH₃COOH

Reduction: Acetone undergoes reduction to form isopropanol when treated with reducing agents like sodium borohydride (NaBH₄) or hydrogen in the presence of a nickel catalyst.

CH₃COCH₃ + 2[H] → CH₃CHOHCH₃

Aldol Condensation: In the presence of a base or acid, acetone undergoes aldol condensation to form β-hydroxy ketones, which dehydrate to α,β-unsaturated carbonyl compounds.

$2 C H_{3} COC H_{3} N a O H C H_{3} C (O H) C H_{2} COC H_{3} h e a t C H_{3} C = C H COC H_{3} + H_{2} O$

Reaction with Grignard Reagents: Acetone reacts with Grignard reagents (RMgX) to form tertiary alcohols.

$C H_{3} COC H_{3} + RM g X \to (C H_{3})_{2} C (O H) R$

Reaction with Ammonia Derivatives: Acetone reacts with ammonia derivatives (e.g., hydrazine, hydroxylamine) to form corresponding imines, hydrazones, or oximes.

Oxime Formation: $C H_{3} COC H_{3} + N H_{2} O H \to C H_{3} C = NO H C H_{3}$

Reaction with Halogens: In the presence of a base, acetone reacts with halogens like bromine or iodine to form halogenated compounds.

Haloform Reaction:

Reaction with Alcohols (Hemiacetal and Acetal Formation): Acetone reacts with alcohols in the presence of acid catalysts to form hemiacetals and acetals.

5.0Preparation of Acetone

Acetone (CH₃COCH₃CH) can be prepared by various methods. Important industrial and laboratory techniques are:

By Dehydrogenation of Isopropanol:

Production of acetone by Dehydrogenation of Isopropanol

By Oxidation of Propylene:
$CH_{3} CH = CH_{2} + Pd(II)Cl_{2} + H_{2} O \to CH_{3} C(O) CH_{3} + Pd(O) + 2 HCl$
Industrially (Cumene Process): Acetone is produced as a by-product during the manufacture of phenol.

Preparation of acetone by Cumene Process

6.0Uses of Acetone

Solvent: Widely used as a solvent for paints, coatings, varnishes, and adhesives due to its ability to dissolve organic compounds.
Chemical Intermediate: Used in the production of methyl methacrylate (for plastics) and bisphenol A (for polycarbonate plastics).
In Pharmaceuticals: Utilized as a solvent in drug formulations.
Cleaning Agent: Commonly used in laboratory and household cleaning for removing grease, oil, and adhesives.
Nail Polish Remover: A primary ingredient in many nail polish removers.

7.0Health and Safety

Toxicity: Acetone is moderately toxic; prolonged exposure can cause irritation to the eyes, skin, and respiratory system.

Safety Measures:

Use in well-ventilated areas.
Avoid contact with open flames as it is highly flammable.

Also Read:-

Curtis Rearrangement	Atomic Structure PYQs with Solution	Thermodynamics and Gasesous State PYQs with Solutions
Cyanide Process	Periodic Table PYQs with Solutions	State Function

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(Session 2026 - 27)

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Acetone

1.0Introduction to Acetone

Acetone, also known as propanone (CH₃COCH₃), is the simplest and most well-known example of a symmetrical ketone. In a symmetrical ketone, the carbonyl group (C=O) is flanked by two identical alkyl groups. In the case of acetone, these groups are methyl groups (-CH₃). General Properties of acetone are-

Chemical Formula: CH₃COCH₃

IUPAC Name: Propan-2-one
Common Name: Acetone

2.0Structure of Acetone

3.0Properties of Acetone

Physical Properties of Acetone

Property	Details
Appearance	Colorless liquid with a distinct, sweet odor.
Boiling Point	56.05^∘C
Melting Point	−94.8^∘C
Density	0.791 g/cm³
Solubility	Completely miscible with water, alcohol, and most organic solvents.

Chemical Properties of Acetone

Property	Details
Polar Solvent	Highly polar due to its carbonyl group (C=O).
Flammability	Highly flammable with a flashpoint of −20^∘
Reactivity	- Reacts with oxidizing agents to form acetic acid or carbon dioxide.
	- Undergoes aldol condensation in the presence of a base or acid to form mesityl oxide.

Polarity and Solvent Properties:

Acetone is a polar molecule due to the electronegative oxygen atom in the carbonyl group.
It is an excellent solvent for organic and some inorganic compounds, dissolving polar and nonpolar substances.

4.0Chemical Reactions of Acetone

Oxidation: Strong oxidizing agents can oxidize acetone to form acetic acid (CH3COOH), carbon dioxide, and water.

CH₃COCH₃ + [O] → CH₃COOH

Reduction: Acetone undergoes reduction to form isopropanol when treated with reducing agents like sodium borohydride (NaBH₄) or hydrogen in the presence of a nickel catalyst.

CH₃COCH₃ + 2[H] → CH₃CHOHCH₃

Aldol Condensation: In the presence of a base or acid, acetone undergoes aldol condensation to form β-hydroxy ketones, which dehydrate to α,β-unsaturated carbonyl compounds.

$2 C H_{3} COC H_{3} N a O H C H_{3} C (O H) C H_{2} COC H_{3} h e a t C H_{3} C = C H COC H_{3} + H_{2} O$

Reaction with Grignard Reagents: Acetone reacts with Grignard reagents (RMgX) to form tertiary alcohols.

$C H_{3} COC H_{3} + RM g X \to (C H_{3})_{2} C (O H) R$

Reaction with Ammonia Derivatives: Acetone reacts with ammonia derivatives (e.g., hydrazine, hydroxylamine) to form corresponding imines, hydrazones, or oximes.

Oxime Formation: $C H_{3} COC H_{3} + N H_{2} O H \to C H_{3} C = NO H C H_{3}$

Reaction with Halogens: In the presence of a base, acetone reacts with halogens like bromine or iodine to form halogenated compounds.

Haloform Reaction:

Reaction with Alcohols (Hemiacetal and Acetal Formation): Acetone reacts with alcohols in the presence of acid catalysts to form hemiacetals and acetals.

5.0Preparation of Acetone

Acetone (CH₃COCH₃CH) can be prepared by various methods. Important industrial and laboratory techniques are:

By Dehydrogenation of Isopropanol:

By Oxidation of Propylene:
$CH_{3} CH = CH_{2} + Pd(II)Cl_{2} + H_{2} O \to CH_{3} C(O) CH_{3} + Pd(O) + 2 HCl$
Industrially (Cumene Process): Acetone is produced as a by-product during the manufacture of phenol.

6.0Uses of Acetone

Solvent: Widely used as a solvent for paints, coatings, varnishes, and adhesives due to its ability to dissolve organic compounds.
Chemical Intermediate: Used in the production of methyl methacrylate (for plastics) and bisphenol A (for polycarbonate plastics).
In Pharmaceuticals: Utilized as a solvent in drug formulations.
Cleaning Agent: Commonly used in laboratory and household cleaning for removing grease, oil, and adhesives.
Nail Polish Remover: A primary ingredient in many nail polish removers.

7.0Health and Safety

Toxicity: Acetone is moderately toxic; prolonged exposure can cause irritation to the eyes, skin, and respiratory system.

Safety Measures:

Use in well-ventilated areas.
Avoid contact with open flames as it is highly flammable.

Also Read:-

Curtis Rearrangement	Atomic Structure PYQs with Solution	Thermodynamics and Gasesous State PYQs with Solutions
Cyanide Process	Periodic Table PYQs with Solutions	State Function

Frequently Asked Questions

What is acetone, and where is it commonly used?

Why is acetone considered a symmetrical ketone?

Is acetone polar or non-polar?

Is acetone flammable?

Frequently Asked Questions

What is acetone, and where is it commonly used?

Why is acetone considered a symmetrical ketone?

Is acetone polar or non-polar?

Is acetone flammable?

Join ALLEN!

Acetone

1.0Introduction to Acetone

2.0Structure of Acetone

3.0Properties of Acetone

4.0Chemical Reactions of Acetone

5.0Preparation of Acetone

6.0Uses of Acetone

7.0Health and Safety

Table of Contents

Join ALLEN!

Acetone

1.0Introduction to Acetone

2.0Structure of Acetone

3.0Properties of Acetone

4.0Chemical Reactions of Acetone

5.0Preparation of Acetone

6.0Uses of Acetone

7.0Health and Safety

Table of Contents