Nitroso-R salt
Also known as: 1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt, Disodium 1-nitroso-2-naphthol-3,6-disulfonate, 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic acid disodium salt, Disodium 3-hydroxy-4-nitroso-2,7-naphthalenedisulfonate, Nitroso R Salt, Nitroso red salt, 1-Nitroso-2-naphthol-3,6-disulfonic acid sodium salt, Disodium 1-nitroso-2-naphthol-3,6-disulfonate monohydrate, EINECS 208-369-1
Nitroso-R salt (CAS 525-05-3) is a compound in the Nitrogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C10H7NNa2O9S2 and a molecular weight of 395.27400 g/mol. Key property: a melting point of >300 °C(lit.). It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H332 — Harmful if inhaled. It is listed by 1 supplier; request a quote for pricing. Record last updated Nov 3, 2026.
- CAS No.
- 525-05-3
- Jingsj CID
- J-1115007-5
- Molecular Formula
- C10H7NNa2O9S2
- Molecular Weight
- 395.27400 g/mol
- Category
- Nitrogen Compounds
- Last updated
- 11/3/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | - | - | CN China |
Physicochemical Properties
| Melting Point | >300 °C(lit.) |
|---|---|
| Exact Mass | 376.925201 |
| PSA | 180.82000 |
| LogP | 2.91310 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H312 — Harmful in contact with skin
- H332 — Harmful if inhaled
Customs & Trade Information
| HS Code | 2907199090 |
|---|---|
| Summary | 2907199090 other monophenols VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Nitroso-R salt?
The CAS number of Nitroso-R salt is 525-05-3.
What are the molecular formula and molecular weight of Nitroso-R salt?
Nitroso-R salt has molecular formula C10H7NNa2O9S2 and molecular weight 395.27400 g/mol.
Which suppliers offer Nitroso-R salt?
1 supplier(s) listed; request a quote for pricing.
Is Nitroso-R salt hazardous?
Nitroso-R salt has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H332 — Harmful if inhaled.
What are the upstream and downstream products of Nitroso-R salt?
For Nitroso-R salt, Upstream Products: Disodium 2-naphthol-3,6-disulfonate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Nitroso-R salt (CAS 525-05-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1115007-5 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.