Naphtalene (C₁₀H₈)

Naphtalene (C₁₀H₈)

The simplest polycyclic aromatic hydrocarbon.



naphtalene, aromatic hydrocarbon, condensed ring, delocalised electrons, sublimate, coal tar, soot, organic chemistry, chemistry

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Naphtalene C₁₀H₈


Molar mass: 128.17 g/mol

Melting point: 80.5 °C (176.9 °F)

Boiling point: 218 °C (424.4 °F)

Density: 1.15 g/cm³ (0.04155 lb/in³)


Naphthalene is a white, solid compound with a characteristic odor; it forms needle-like crystals. It does not dissolve in water, but it dissolves well in organic solvents such as alcohols and ethers. It sublimates easily. Naphthalene is easy to nitrate and sulfonate. It is a flammable substance that burns with a sooty flame.

Occurrence, production

Naphthalene is mainly produced from coal tar.


Naphthalene is used in the production of soot, paints and medicines and in the oxidative production of decalin, tetralin, chloronaphthalenes and phthalic anhydride. It is the main ingredient in domestic moth repellents.

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Benzene (C₆H₆)

Benzene is the simplest aromatic hydrocarbon.

Covalent bonds in benzene molecules

In benzene there are sigma bonds and delocalized pi bonds between carbon atoms.

Pyrimidine (C₄H₄N₂)

A heterocyclic organic compound, its derivatives are thymine, cytosine and uracil.

Styrene (vinyl benzene) (C₈H₈)

A colorless liquid with an odor similar to benzene. The monomer of polystyrene.

Aniline (C₆H₅NH₂)

The simplest aromatic amine. Its scientific name is phenylamine.

Benzoic acid (C₆H₅COOH)

The simplest of the aromatic carboxylic acids.

Pyridine (C₅H₅N)

A basic heterocyclic organic compound; a colorless, pungent toxic liquid.

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