Disodium 2-naphthol-3,6-disulfonate
Also known as: 2-Naphthol-3,6-disulfonic acid disodium salt, 3-Hydroxy-2,7-naphthalenedisulfonic acid disodium salt, Disodium 3-hydroxy-2,7-naphthalenedisulfonate, R salt, R acid disodium salt, Sodium 3-hydroxynaphthalene-2,7-disulfonate, Disodium 3-hydroxynaphthalene-2,7-disulfonate, Beta-naphthol-3,6-disulfonic acid disodium salt, 2,7-Naphthalenedisulfonic acid, 3-hydroxy-, disodium salt, EINECS 205-196-3, MFCD00065915
Disodium 2-naphthol-3,6-disulfonate (CAS 135-51-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H6Na2O7S2 and a molecular weight of 348.260 g/mol. Key property: a melting point of 107ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 135-51-3
- Jingsj CID
- J-29822-3
- Molecular Formula
- C10H6Na2O7S2
- Molecular Weight
- 348.260 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 107ºC |
|---|---|
| Exact Mass | 347.935028 |
| PSA | 151.39000 |
| LogP | 2.51520 |
| Stability | Stable. Incompatible with strong oxidizing agents. |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
Customs & Trade Information
| HS Code | 2908999090 |
|---|---|
| Summary | 2908999090 halogenated, sulphonated, nitrated or nitrosated derivatives of phenols or phenol-alcohols。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Disodium 2-naphthol-3,6-disulfonate?
The CAS number of Disodium 2-naphthol-3,6-disulfonate is 135-51-3.
What are the molecular formula and molecular weight of Disodium 2-naphthol-3,6-disulfonate?
Disodium 2-naphthol-3,6-disulfonate has molecular formula C10H6Na2O7S2 and molecular weight 348.260 g/mol.
Is Disodium 2-naphthol-3,6-disulfonate hazardous?
Disodium 2-naphthol-3,6-disulfonate has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of Disodium 2-naphthol-3,6-disulfonate?
For Disodium 2-naphthol-3,6-disulfonate, Downstream Products: Nitroso-R salt.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Disodium 2-naphthol-3,6-disulfonate (CAS 135-51-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-29822-3 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.