1,2-Naphthoquinone-4-sulphonic acid sodium sa… 521-24-4

Name: 1,2-Naphthoquinone-4-sulphonic acid sodium salt, GR 99%+
Brand: Vaqora Chemicals
SKU: VQ-010740

About 1,2-Naphthoquinone-4-sulphonic acid sodium salt, GR 99%+

1,2-Naphthoquinone-4-sulphonic acid sodium salt is an organosulfur compound in AR grade carrying the CAS registry number 521-24-4 with a typical assay of ≥99%. With the molecular formula C10H5NaO5S, it has a molar mass of 260.2 g/mol. Its systematic (IUPAC) name is sodium 3,4-dioxonaphthalene-1-sulfonate. Alternative names: Folin's reagent and Sodium 1,2-naphthoquinone-4-sulfonate.

The material typically appears as a brownish yellow powder. Keep the container tightly sealed and store it in a cool, dry area. It carries the GHS signal word “Warning” with 3 hazard statements. Review the Safety Data Sheet before use.

It is commonly used for pharmaceutical synthesis and analytical determinations. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 5 g, 25 g, 100 g and 1 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Pharmaceutical synthesis
Analytical determinations

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	1,2-Naphthoquinone-4-sulphonic acid sodium salt, GR 99%+
Catalogue No.	VQ-010740
CAS Number	521-24-4
IUPAC name	sodium 3,4-dioxonaphthalene-1-sulfonate
Molecular formula	C₁₀H₅NaO₅S
Molecular weight	260.2 g/mol
Exact mass	259.9755
Grade	AR
Purity / assay	≥99%
HSN code	29049040
InChIKey	UBLXEEBHYISRFM-UHFFFAOYSA-M
SMILES	C1=CC=C2C(=C1)C(=CC(=O)C2=O)S(=O)(=O)[O-].[Na+]
PubChem CID	516996

Physical properties
Physical form	Powder
Appearance	Brownish yellow powder
H-bond donors / acceptors	0 / 5
TPSA	99.7 Å²
Synonyms	3,4-Dihydro-3,4-dioxo-1-naphthalenesulfonic acid sodium salt, Folin's reagent, Sodium 1,2-naphthoquinone-4-sulfonate, 1,2-Naphthoquinone-4-sulfonic acid sodium salt, Sodium beta-naphthoquinone-4-sulfonate, beta-Naphthoquinone-4-sulfonate sodium salt, Sodium 3,4-dihydro-3,4-dioxo-1-naphthalenesulfonate, 1-Naphthalenesulfonic acid, 3,4-dihydro-3,4-dioxo-, sodium salt (1:1), Sodium 1,2naphthoquinone4sulfonate, Sodium 3,4dioxonaphthalene1sulphonate, betaNaphthoquinone4sulfonate sodium salt, 1,2Naphthoquinone4sulfonic acid sodium salt

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 521-24-4

1,2-Naphthoquinone-4-sulphonic acid sodium salt, 99%

CAS: 521-24-4
Formula: C₁₀H₅NaO₅S
MW: 260.2 g/mol

VQ-010739

Frequently asked questions

What is the CAS number of 1,2-Naphthoquinone-4-sulphonic acid sodium salt, GR 99%+?

The CAS Registry Number of 1,2-Naphthoquinone-4-sulphonic acid sodium salt, GR 99%+ is 521-24-4. It is also known as 3,4-Dihydro-3,4-dioxo-1-naphthalenesulfonic acid sodium salt, Folin's reagent, Sodium 1,2-naphthoquinone-4-sulfonate.

What is the molecular formula and molecular weight of 1,2-Naphthoquinone-4-sulphonic acid sodium salt, GR 99%+?

1,2-Naphthoquinone-4-sulphonic acid sodium salt, GR 99%+ has the molecular formula C10H5NaO5S and a molecular weight of 260.2 g/mol. Its IUPAC name is sodium 3,4-dioxonaphthalene-1-sulfonate.

Which grade and pack sizes of 1,2-Naphthoquinone-4-sulphonic acid sodium salt, GR 99%+ can I order?

We supply 1,2-Naphthoquinone-4-sulphonic acid sodium salt, GR 99%+ in AR (≥99%) grade, in 5 g, 25 g, 100 g, 1 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 1,2-Naphthoquinone-4-sulphonic acid sodium salt, GR 99%+?

Yes. Every lot of 1,2-Naphthoquinone-4-sulphonic acid sodium salt, GR 99%+ is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 1,2-Naphthoquinone-4-sulphonic acid sodium salt, GR 99%+ be shipped internationally?

Yes. 1,2-Naphthoquinone-4-sulphonic acid sodium salt, GR 99%+ is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.