Molekula
1-Nitroso-2-naphthol-3,6-disulfonic acid disodium 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-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt is a sulfonic acid derivative used in dye synthesis and analytical chemistry. It serves as an intermediate in the production of azo dyes and as a reagent in metal ion detection. Available in powder form, it has a molecular weight of 377.261 g/mol, a CAS number of 525-05-3, and is stable at ambient temperatures. Store under normal conditions with caution due to the warning signal word. Molekula supplies 1-Nitroso-2-naphthol-3,6-disulfonic acid disodium 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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100 g — $215.70 per pack
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Specifications
| Property | Value |
|---|---|
| Appearance | Yellow crystal solid |
| Residue on Ignition | ≤1.0% |
| Solubility in water | Pass |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 65241957 |
| CAS Number | 525-05-3 |
| IUPAC Name | disodium;3-hydroxy-4-nitrosonaphthalene-2,7-disulfonate |
| EC Number | 208-369-1 |
| Molecular Formula | C10H5NNa2O8S2 |
| Molecular Weight | 377.261 |
| Exact Mass | 376.9252 |
| SMILES | C1=CC2=C(C(=C(C=C2C=C1S(=O)(=O)[O-])S(=O)(=O)[O-])O)N=O.[Na+].[Na+] |
| InChIKey | DMKMTGULLYISBH-UHFFFAOYSA-L |
| InChI | InChI=1S/C10H7NO8S2.2Na/c12-10-8(21(17,18)19)4-5-3-6(20(14,15)16)1-2-7(5)9(10)11-13;;/h1-4,12H,(H,14,15,16)(H,17,18,19);;/q;2*+1/p-2 |
| PubChem CID | 10672 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2908998000 |
| Tariff Code | 2908990000 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H302 + H312 + H332 Harmful if swallowed, in contact with skin or if inhaled
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- 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
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Russian, 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
- 1-Nitroso-3,6-disulfonate
- 2,7-NAPHTHALENEDISULFONIC ACID, 3-HYDROXY-4-NITROSO-, DISODIUM SALT
- 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic acid disodium salt
- Disodium 1-nitroso-2-naphthol-3,6-disulfonate
- Disodium 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonate
- disodium 3-hydroxy-4-nitrosonaphthalene-2,7-disulfonate
- Nitroso R
- NITROSO RED SALT
- Nitroso-R-salt
- Sodium 3-hydroxy-4-nitrosonaphthalene-2,7-disulfonate
Frequently asked questions
What is 1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt used for?
It is primarily used as a reagent in analytical chemistry, particularly in the detection and quantification of certain metal ions and in dye synthesis.
What is the chemical formula and molecular weight?
The formula is C10H5NNa2O8S2 with a molecular weight of 377.261 g/mol.
How should this compound be stored?
Store at ambient temperature, protected from moisture and light.
What grade is available?
Available in analytical grade for laboratory use.
Can Molekula supply this in bulk?
Yes, bulk quantities are available upon request; please contact our sales team for details.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
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.