Dipotassium 7-hydroxynaphthalene-1,3-disulfonate

Also known as: 2-Naphthol-6,8-disulfonic acid dipotassium salt, G salt, Dipotassium 7-hydroxy-1,3-naphthalenedisulfonate, Dipotassium 2-hydroxynaphthalene-6,8-disulfonate, 1,3-Naphthalenedisulfonic acid, 7-hydroxy-, potassium salt (1:2), EINECS 212-672-4, MFCD00066361, Cholic Acid Impurity 6, Ponceau 4R Impurity 2, G ACID DIPOTASSIUM SALT, Y ACID DIPOTASSIUM SALT

Dipotassium 7-hydroxynaphthalene-1,3-disulfonate (CAS 842-18-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H6K2O7S2 and a molecular weight of 380.477 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 842-18-2
Jingsj CID: J-29826-0
Molecular Formula: C₁₀H₆K₂O₇S₂
Molecular Weight: 380.477 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	379.882904
PSA	151.39000
LogP	2.51520

Customs & Trade Information

HS Code	2908999090
Summary	2908999090 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 Dipotassium 7-hydroxynaphthalene-1,3-disulfonate?

The CAS number of Dipotassium 7-hydroxynaphthalene-1,3-disulfonate is 842-18-2.

What are the molecular formula and molecular weight of Dipotassium 7-hydroxynaphthalene-1,3-disulfonate?

Dipotassium 7-hydroxynaphthalene-1,3-disulfonate has molecular formula C10H6K2O7S2 and molecular weight 380.477 g/mol.

What are the upstream and downstream products of Dipotassium 7-hydroxynaphthalene-1,3-disulfonate?

For Dipotassium 7-hydroxynaphthalene-1,3-disulfonate, Downstream Products: 2-Naphthol-6,8-disulfonic 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. "Dipotassium 7-hydroxynaphthalene-1,3-disulfonate (CAS 842-18-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-29826-0 (accessed 2026-11-09).

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