Naphthol Yellow S
Also known as: Citronin A, Acid Yellow 1, C.I. Acid Yellow 1, C.I. 10316, Sulfur Yellow S, Disodium 5,7-dinitro-8-oxidonaphthalene-2-sulfonate, Disodium 5,7-dinitro-8-oxidonaphthalene-2-sulphonate, 8-Hydroxy-5,7-dinitro-2-naphthalenesulfonic Acid Disodium Salt, FD&C Yellow No. 1, Ext. D&C Yellow No. 7, Naphthol Yellow S Hydrate, 2-Naphthalenesulfonic acid, 8-hydroxy-5,7-dinitro-, sodium salt (1:2)
Naphthol Yellow S (CAS 846-70-8) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C10H4N2Na2O8S and a molecular weight of 358.192 g/mol. Key property: a melting point of >300℃. It is classified under GHS with signal word Warning and hazard statements H317 — May cause an allergic skin reaction and H373 — May cause damage to organs through prolonged exposure. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 846-70-8
- Jingsj CID
- J-41086-9
- Molecular Formula
- C10H4N2Na2O8S
- Molecular Weight
- 358.192 g/mol
- Category
- Alcohols
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | >300℃ |
|---|---|
| Exact Mass | 357.948364 |
| PSA | 180.28000 |
| LogP | 3.83130 |
GHS Safety & Compliance
- H317 — May cause an allergic skin reaction
- H373 — May cause damage to organs through prolonged exposure
Customs & Trade Information
| HS Code | 2904909090 |
|---|---|
| Summary | HS:2904909090 sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated 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 Naphthol Yellow S?
The CAS number of Naphthol Yellow S is 846-70-8.
What are the molecular formula and molecular weight of Naphthol Yellow S?
Naphthol Yellow S has molecular formula C10H4N2Na2O8S and molecular weight 358.192 g/mol.
Is Naphthol Yellow S hazardous?
Naphthol Yellow S has GHS signal word Warning and hazard statements H317 — May cause an allergic skin reaction; H373 — May cause damage to organs through prolonged exposure.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Naphthol Yellow S (CAS 846-70-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-41086-9 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.