Chromotropic acid monosodium salt

变色酸钠

Also known as: 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-, monosodium salt, 4,5-Dihydroxy-2,7-naphthalenedisulfonic acid 2-sodium salt, Sodium hydrogen 4,5-dihydroxynaphthalene-2,7-disulphonate, sodium 4,5-dihydroxy-7-sulfonaphthalene-2-sulfonate, chromotropic acid monosodium salt, EINECS 223-430-2, MFCD00067682

Chromotropic acid monosodium salt (CAS 3888-44-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H7NaO8S2 and a molecular weight of 342.27800 g/mol. It is also known as 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-, monosodium salt, 4,5-Dihydroxy-2,7-naphthalenedisulfonic acid 2-sodium salt and Sodium hydrogen 4,5-dihydroxynaphthalene-2,7-disulphonate. Key property: a density of 1.929g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
3888-44-6
Jingsj CID
J-1992950-5
Molecular Formula
C10H7NaO8S2
Chinese Name
变色酸钠
Molecular Weight
342.27800 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Density1.929g/cm3

Frequently Asked Questions

What is the CAS number of Chromotropic acid monosodium salt?

The CAS number of Chromotropic acid monosodium salt is 3888-44-6.

What are the molecular formula and molecular weight of Chromotropic acid monosodium salt?

Chromotropic acid monosodium salt has molecular formula C10H7NaO8S2 and molecular weight 342.27800 g/mol.

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

Last updated:

How to cite: Jingsj. "Chromotropic acid monosodium salt (CAS 3888-44-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1992950-5 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.