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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 68204Generated: October 23, 2026

Naphthalic acid

NAPHTHALENE-1,8-DICARBOXYLIC ACID · NSC 37065 · AKOS 237-43 · Einecs 208-247-8 · 1,8-Naphthalic acid · RARECHEM AL BE 0743 · 1,8-Naphthalenedicarboxylicacid

https://huagongshe.com/en/chemical/68204

Naphthalic acid molecular structure

Identifiers & Physical Properties

CAS No.518-05-8
Molecular formulaC12H8O4
Average molar mass216.19 g/mol
Monoisotopic mass216.04225874 g/mol
SMILESO=C(O)c1cccc2cccc(C(=O)O)c12
InChIKeyHRRDCWDFRIJIQZ-UHFFFAOYSA-N
PubChem CID68204
EC No.208-247-8
DTXSIDDTXSID90199730

Chemical & Physical Properties

XLogP2
Topological polar surface area74.6
Hydrogen bond donors2
Hydrogen bond acceptors4
Rotatable bonds2
Heavy atoms16
Formal charge0
Complexity271
Melting point270°
Boiling point316.6°C (rough estimate)
Density1.3023 (rough estimate)
Refractive index1.7080 (estimate)
pKa (acidity coefficient)2.25±0.10(Predicted)
FDA UNIIU1T26YEW8C

Applications & Uses

Uses

1,8-NAPHTHALIC ACID is used as an intermediate in dye pesticides.