1,8-Naphthalenedicarboxylic acid

Also known as: naphthalene-1,8-dicarboxylic acid, 1,8-naphthalic acid, NSC 37065, Naphthalic acid

1,8-Naphthalenedicarboxylic acid (CAS 518-05-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H8O4 and a molecular weight of 216.19000 g/mol. Key properties include a boiling point of 511.6ºC at 760mmHg, a density of 1.454g/cm3 and a flash point of 277.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 518-05-8
Jingsj CID: J-11689-2
Molecular Formula: C₁₂H₈O₄
Molecular Weight: 216.19000 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	511.6ºC at 760mmHg
Density	1.454g/cm3
Flash Point	277.3ºC
Exact Mass	216.04200
PSA	74.60000
LogP	2.23620
Refractive Index	1.708

Customs & Trade Information

HS Code	2917399090
Summary	2917399090 aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 1,8-Naphthalenedicarboxylic acid?

The CAS number of 1,8-Naphthalenedicarboxylic acid is 518-05-8.

What are the molecular formula and molecular weight of 1,8-Naphthalenedicarboxylic acid?

1,8-Naphthalenedicarboxylic acid has molecular formula C12H8O4 and molecular weight 216.19000 g/mol.

What are the upstream and downstream products of 1,8-Naphthalenedicarboxylic acid?

For 1,8-Naphthalenedicarboxylic acid, Upstream Products: Acenaphthoquinone, Acenaphthene, Acenaphthylene; Downstream Products: (8-bromonaphthalen-1-yl)methanol, 1,8-Dibromonaphthalene, 8-Bromo-1-naphthoic acid.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "1,8-Naphthalenedicarboxylic acid (CAS 518-05-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11689-2 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.