Molecular formula: C₁₂H₁₀
Structural formula:

Properties: White or slightly yellow squamous crystal
Purity (chromatograph): ≥95% (first grade), ≥93% (second grade)
Use: Raw material of 1,8-naphthalic anhydride. Used in the production of dyes, acenaphthylene resin after dehydrogenation, plant growth hormone, pesticide, fungicide and so forth