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2-Naphthol-6,8-disulfonic acid

Also known as: 7-hydroxynaphthalene-1,3-disulfonic acid, 7-Hydroxy-1,3-naphthalenedisulfonic acid, G Acid, 2-Hydroxynaphthalene-6,8-disulfonic acid, 7-hydroxy-1,3-naphthalenedisulfonic acid hydrate

2-Naphthol-6,8-disulfonic acid (CAS 118-32-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H8O7S2 and a molecular weight of 304.29600 g/mol. Key property: a density of 1.816g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
118-32-1
Jingsj CID
J-26766-3
Molecular Formula
C10H8O7S2
Molecular Weight
304.29600 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Density1.816g/cm3
Exact Mass303.97100
PSA145.73000
LogP3.20040
Refractive Index1.725

Customs & Trade Information

HS Code2908999090
Summary2908999090 halogenated, sulphonated, nitrated or nitrosated derivatives of phenols or phenol-alcohols。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2-Naphthol-6,8-disulfonic acid?

The CAS number of 2-Naphthol-6,8-disulfonic acid is 118-32-1.

What are the molecular formula and molecular weight of 2-Naphthol-6,8-disulfonic acid?

2-Naphthol-6,8-disulfonic acid has molecular formula C10H8O7S2 and molecular weight 304.29600 g/mol.

What are the upstream and downstream products of 2-Naphthol-6,8-disulfonic acid?

For 2-Naphthol-6,8-disulfonic acid, Upstream Products: 2-Naphthol, Dipotassium 7-hydroxynaphthalene-1,3-disulfonate, Water; Downstream Products: 7-Amino-1,3-naphthalenedisulfonic acid, 5-Hydroxy-2-methylbenzoic acid, 4-hydroxy-6-(methylamino)naphthalene-2-sulfonic acid.

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

Last updated:

How to cite: Jingsj. "2-Naphthol-6,8-disulfonic acid (CAS 118-32-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26766-3 (accessed 2026-11-09).

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