Molecular Formula: C₁₀H₈O

Molecular Weight: 144.17

Melting Point 122–124°C

Boiling Point 285–286°C (at 760 mmHg)

Density 1.28 g/cm³ (at 20°C)

Flash Point 161°C (Closed Cup)

Solubility Sparingly soluble in water (~1 g/L at 20°C); Soluble in hot water, ethanol, ether, chloroform, benzene, glycerol, and strong alkali solutions.

Stability Stable in air. Discolors upon exposure to light. Sublimes on heating.

Chemical Synthesis:

Dye Intermediates: Applied in the manufacture of Tobias acid, 2-hydroxy-3-naphthoic acid and other dye intermediates, as well as organic pigments.

Antioxidant Raw Materials:

Used for the synthesis of rubber antioxidants including Antioxidant D and DNP.

Research & Testing:

Analytical Reagent: Applied in the detection of bromine, chlorine, copper, nitrite and other ions, and for the fluorometric assay of phenolsulfotransferase.

Indicator:

Suitable for use as an acid-base indicator and fluorescent indicator.

Other Applications:

Used as a synthetic raw material for plant growth regulator 2-naphthyloxyacetic acid; also applied as pharmaceutical intermediate and raw material for agricultural fungicides.‌‌