Australia
Bangladesh
Belgium
Brazil
Canada
China
Egypt
France
Germany
India
Indonesia
Ireland
VAQORANitroso R salt, GR
Synonyms: 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic acid disodium salt · 1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt · Nitroso-R-salt · 1-Nitroso-3,6-disulfonate
CAS No.525-05-3
FormulaC10H5NNa2O8S2
Mol. weight377.30
Catalogue No.VQ-000391
PurityAR
HSN29089990
Nitroso R salt (CAS 525-05-3) – indicator, AR grade. C10H5NNa2O8S2, MW 377.3. Get a quote from Vaqora Chemicals, COA included, shipped worldwide.
Pack sizesPrice on quotation · bulk available
25 g
100 g
1 kg
5 kg
25 kg
Bulk / custom pack · kg to MT
Enquire Batch COA with every lot
16-section GHS SDS
Export to 120+ countries
DG-compliant packing
About Nitroso R salt, GR
Nitroso R salt (CAS 525-05-3) is an indicator offered by Vaqora Chemicals in AR grade. Formula C10H5NNa2O8S2, molecular weight 377.3 g/mol. The IUPAC name is disodium, 3-hydroxy-4-nitrosonaphthalene-2,7-disulfonate. Common synonyms include Nitroso-R-salt and 1-Nitroso-3,6-disulfonate.
It is supplied as a yellow to green yellow solid. Store sealed in a dry, well-ventilated location away from incompatible materials. It carries the GHS signal word “Warning” with 6 hazard statements. Review the Safety Data Sheet before use.
Key uses span titration end-point detection, pH determination and analytical testing. Buyers come mainly from academic and industrial research.
Standard pack sizes are 25 g, 100 g, 1 kg and 5 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide. SDS and detailed specification sheets can be requested with your quotation.
Typical applications
- Titration end-point detection
- pH determination
- Analytical testing
Industries
Grade guides
Specifications & identifiers
| Product name | Nitroso R salt, GR |
|---|---|
| Catalogue No. | VQ-000391 |
| CAS Number | 525-05-3 |
| IUPAC name | disodium;3-hydroxy-4-nitrosonaphthalene-2,7-disulfonate |
| Molecular formula | C10H5NNa2O8S2 |
| Molecular weight | 377.3 g/mol |
| Exact mass | 376.9252 |
| Grade | AR |
| HSN code | 29089990 |
| InChIKey | DMKMTGULLYISBH-UHFFFAOYSA-L |
| SMILES | C1=CC2=C(C(=C(C=C2C=C1S(=O)(=O)[O-])S(=O)(=O)[O-])O)N=O.[Na+].[Na+] |
| PubChem CID | 10672 |
| Physical form | Solid |
|---|---|
| Appearance | Yellow to green yellow solid |
| H-bond donors / acceptors | 1 / 9 |
| TPSA | 181 Ų |
| Synonyms | 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic acid disodium salt, 1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt, Nitroso-R-salt, 1-Nitroso-3,6-disulfonate, Nitroso-R salt, Sodium 3-hydroxy-4-nitrosonaphthalene-2,7-disulfonate, Disodium 1-nitroso-2-naphthol-3,6-disulfonate, disodium 3-hydroxy-4-nitrosonaphthalene-2,7-disulfonate, Disodium 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonate, Nitroso R, 2-Hydroxy-3-nitroso-2,7-naphthalenedisulfonic acid disodium salt, 2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-nitroso-, sodium salt (1:2) |
Safety & hazard information (GHS)
Signal word: Warning
Hazard statements
H302Harmful if swallowedH312Harmful in contact with skinH315Causes skin irritationH319Causes serious eye irritationH332Harmful if inhaledH335May cause respiratory irritation
Precautionary statements: P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P317, P319, P321, P330, 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
Frequently asked questions
What is the CAS number of Nitroso R salt, GR?
The CAS Registry Number of Nitroso R salt, GR is 525-05-3. It is also known as 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic acid disodium salt, 1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt, Nitroso-R-salt.
What is the molecular formula and molecular weight of Nitroso R salt, GR?
Nitroso R salt, GR has the molecular formula C10H5NNa2O8S2 and a molecular weight of 377.3 g/mol.
Which grade and pack sizes of Nitroso R salt, GR can I order?
We supply Nitroso R salt, GR in AR grade, in 25 g, 100 g, 1 kg, 5 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.
Do you provide a COA and SDS with Nitroso R salt, GR?
Yes. Every lot of Nitroso R salt, GR 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 Nitroso R salt, GR be shipped internationally?
Yes. Nitroso R salt, GR 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.
Enquire about Nitroso R salt, GR
We reply within one business day with price, pack options, lead time and documentation.
Related products
