Acid Yellow 9
Also known as: CI 13015, C.I. 13015, Fast Yellow AB, Food Yellow 2, 2-amino-5-((4-sulfophenyl)azo)-benzenesulfonic acid disodium salt, Benzenesulfonic acid, 2-amino-5-[(4-sulfophenyl)azo]-, disodium salt, SPECIAL YELLOW N-S, Fast Yellow S
Acid Yellow 9 (CAS 2706-28-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H9N3Na2O6S2 and a molecular weight of 401.32600 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 2706-28-7
- Jingsj CID
- J-32328-8
- Molecular Formula
- C12H9N3Na2O6S2
- Molecular Weight
- 401.32600 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Exact Mass | 400.97300 |
|---|---|
| PSA | 181.90000 |
| LogP | 4.23520 |
Frequently Asked Questions
What is the CAS number of Acid Yellow 9?
The CAS number of Acid Yellow 9 is 2706-28-7.
What are the molecular formula and molecular weight of Acid Yellow 9?
Acid Yellow 9 has molecular formula C12H9N3Na2O6S2 and molecular weight 401.32600 g/mol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Acid Yellow 9 (CAS 2706-28-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32328-8 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.