2-Naphthylamine-3,6,8-trisulfonic acid
Also known as: 7-Amino-1,3,6-naphthalenetrisulfonic acid, 2-Amino-3,6,8-naphthalenetrisulfonic acid, 7-Aminonaphthalene-1,3,6-trisulphonic acid, K-acid, AMINO K ACID, 1,3,6-Naphthalenetrisulfonic acid, 7-amino-
2-Naphthylamine-3,6,8-trisulfonic acid (CAS 118-03-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H9NO9S3 and a molecular weight of 383.375 g/mol. Key properties include a melting point of 140-143 °C(lit.), a density of 2.0±0.1 g/cm3 and a flash point of >110.0 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 118-03-6
- Jingsj CID
- J-1993204-8
- Molecular Formula
- C10H9NO9S3
- Molecular Weight
- 383.375 g/mol
- Category
- Organic Acids
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 140-143 °C(lit.) |
|---|---|
| Density | 2.0±0.1 g/cm3 |
| Flash Point | >110.0 °C |
| Exact Mass | 382.943939 |
| PSA | 214.27000 |
| LogP | -1.16 |
| Refractive Index | 1.748 |
Customs & Trade Information
| HS Code | 2921499090 |
|---|---|
| Summary | 2921499090 other aromatic monoamines and their derivatives; salts thereof VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2-Naphthylamine-3,6,8-trisulfonic acid?
The CAS number of 2-Naphthylamine-3,6,8-trisulfonic acid is 118-03-6.
What are the molecular formula and molecular weight of 2-Naphthylamine-3,6,8-trisulfonic acid?
2-Naphthylamine-3,6,8-trisulfonic acid has molecular formula C10H9NO9S3 and molecular weight 383.375 g/mol.
What are the upstream and downstream products of 2-Naphthylamine-3,6,8-trisulfonic acid?
For 2-Naphthylamine-3,6,8-trisulfonic acid, Upstream Products: Ammonia; Downstream Products: 3-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Naphthylamine-3,6,8-trisulfonic acid (CAS 118-03-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1993204-8 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.