Molekula
1,2-Naphthoquinone-4-sulfonic acid sodium salt
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
1,2-Naphthoquinone-4-sulfonic acid sodium salt is an organic compound primarily used as a dye intermediate, redox agent, and in biochemical research for enzyme assays and staining applications. It is also an established analytical reagent for measuring amino acids and amines by colorimetric methods in the laboratory. It appears as a yellow to orange crystalline powder, soluble in water. This chemical has a CAS number of 521-24-4, with the molecular formula C10H5NaO5S and a molecular weight of 260.19847. It is stable at ambient storage conditions and carries a signal word of "Warning" per GHS classification. Molekula supplies 1,2-naphthoquinone-4-sulfonic acid sodium salt from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
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25 g — $138.00 per pack
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Specifications
| Property | Value |
|---|---|
| Appearance | Orange Powder |
| Assay (HPLC) | ≥97.0% |
| Identification (IR) | Conform to Standard |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 16925855 |
| CAS Number | 521-24-4 |
| IUPAC Name | sodium 3,4-dioxonaphthalene-1-sulfonate |
| EC Number | 208-308-9 |
| Molecular Formula | C10H5NaO5S |
| Molecular Weight | 260.19847 |
| Exact Mass | 259.9755 |
| SMILES | C1=CC=C2C(=C1)C(=CC(=O)C2=O)S(=O)(=O)[O-].[Na+] |
| InChIKey | UBLXEEBHYISRFM-UHFFFAOYSA-M |
| InChI | InChI=1S/C10H6O5S.Na/c11-8-5-9(16(13,14)15)6-3-1-2-4-7(6)10(8)12;/h1-5H,(H,13,14,15);/q;+1/p-1 |
| PubChem CID | 516996 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29147900 |
| Tariff Code | 2914790090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- .BETA.-NAPHTHOQUINONE-4-SULFONIC ACID SODIUM SALT
- 1-Naphthalenesulfonic acid, 3,4-dihydro-3,4-dioxo-, sodium salt (1:1)
- 1Naphthalenesulfonic acid, 3,4dihydro3,4dioxo, sodium salt
- 3,4-DIHYDRO-3,4-DIOXO-1-NAPHTHALENESULFONIC ACID SODIUM SALT (1:1)
- beta-Naphthoquinone-4-sulfonate sodium salt
- Sodium 1,2naphthoquinone4sulfonate
- Sodium 3,4-dihydro-3,4-dioxo-1-naphthalenesulfonate
- Sodium 3,4-dioxo-3,4-dihydronaphthalene-1-sulfonate
- Sodium 3,4dioxonaphthalene1sulphonate
- Sodium beta-naphthoquinone-4-sulfonate
Frequently asked questions
What is 1,2-Naphthoquinone-4-sulfonic acid sodium salt commonly used for?
This compound is primarily used as a reagent in organic synthesis, particularly in dye chemistry and as a precursor for producing naphthoquinone derivatives.
What is the chemical formula and molecular weight of this product?
The chemical formula is **C₁₀H₅NaO₅S**, and the molecular weight is **260.19847 g/mol**.
How should this product be stored?
Store at **ambient temperature** in a cool, dry place, away from direct sunlight and incompatible substances.
What purity grades are available for this compound?
We supply this product in **technical grade** and **analytical/ACS grade**—confirm availability for your specific needs.
Can Molekula supply this product in bulk quantities?
Yes, we offer bulk packaging options—contact our sales team for minimum order quantities and pricing.
What documentation is provided with each order?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and a **packing list** for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.