Chemical

Products

Napthalene Crude

Cas Number

91-20-3

Other Names

white tar

camphor tar

tar camphor

naphthalin

naphthaline

antimite

albocarbon

hexalene

mothballs

moth flakes

The formula

C10H8

Introduction

Naphthalene is an organic compound with formula C10H8. It is the simplest polycyclic aromatic hydrocarbon, and is a white crystalline solid with a characteristic odor that is detectable at concentrations as low as 0.08 ppm by mass. As an aromatic hydrocarbon, naphthalene's structure consists of a fused pair of benzene rings. It is best known as the main ingredient of traditional mothballs.

Physical and Chemical Properties
Molar mass 128.17 g·mol−1
Appearance White solid crystals/ flakes
Odor Strong odor of coal tar
Density 1.145 g/cm3 (15.5 °C)[2],1.0253 g/cm3 (20 °C)[3],0.9625 g/cm3 (100 °C)[2]
Melting point 78.2 °C (172.8 °F; 351.3 K),80.26 °C (176.47 °F; 353.41 K),at 760 mmHg[3]
Boiling point 217.97 °C (424.35 °F; 491.12 K),at 760 mmHg[2][3]
Solubility in water 19 mg/L (10 °C),31.6 mg/L (25 °C),43.9 mg/L (34.5 °C),80.9 mg/L (50 °C)[3],238.1 mg/L (73.4 °C)[4]
Solubility Soluble in alcohols, liquid ammonia, carboxylic acids, C6H6, SO2,[4] CCl4, CS2, toluene, aniline[5]
Applications

1 Naphthalene has multi-sectorial uses, with a variety of applications. It is mainly used in the manufacture of:

1. Phthalic anhydride.

2. Concrete superplasticizers.

3. Tanning agents and dyestuffs.

4. B-naftol.

5. Tetralin and Decalin.

5. Mothballs and other compacted products for household use.