| CAS No.: | 91-20-3 |
|---|---|
| Formula: | C10h8 |
| EINECS: | 202-049-5 |
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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.
A naphthalene molecule can be viewed as the fusion of a pair of benzene rings. (In organic chemistry, rings are fused if they share two or more atoms.) As such, naphthalene is classified as a benzenoid polycyclic aromatic hydrocarbon (PAH).The eight carbon atoms that are not shared by the two rings carry one hydrogen atom each. For purpose of the standard IUPAC nomenclature of derived compounds, those eight atoms are numbered 1 through 8 in sequence around the perimeter of the molecule, starting with a carbon atom adjacent to a shared one. The shared carbon atoms are labeled 4a (between 4 and 5) and 8a (between 8 and 1).
1. Naphthalenesulfonic acids and sulfonates
| THE SAMPLE OF THE GOODS | Refined Naphthalene |
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Appearance
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White |
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Crystallization Point
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79.88 |
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Ash Content
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0.006 |
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Non-volatile Matter Content
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0.01 |
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Color Number of Acid Washing
Color Comparison
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2 |
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Naphthalene Content
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99.45 |
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