5-Amino-1-naphthalenesulfonic acid
Also known as: 1-naphthylamine-5-sulfonic acid, Laurent's acid, 1-Naphthalenesulfonic acid, 5-amino-, 5-Aminonaphthalene-1-sulfonic acid, 1-Amino-5-naphthalenesulfonic acid, EINECS 201-571-0, MFCD00014315
5-Amino-1-naphthalenesulfonic acid (CAS 84-89-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H9NO3S and a molecular weight of 223.248 g/mol. Key properties include a melting point of >300°C and a density of 1.5±0.1 g/cm3. It is classified under GHS with signal word Danger and hazard statements H312 — Harmful in contact with skin, H314 — Causes severe skin burns and eye damage and H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 84-89-9
- Jingsj CID
- J-1004567-3
- Molecular Formula
- C10H9NO3S
- Molecular Weight
- 223.248 g/mol
- Category
- Organic Acids
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | >300°C |
|---|---|
| Density | 1.5±0.1 g/cm3 |
| Exact Mass | 223.030319 |
| PSA | 88.77000 |
| LogP | 0.42 |
| Refractive Index | 1.713 |
GHS Safety & Compliance
- H312 — Harmful in contact with skin
- H314 — Causes severe skin burns and eye damage
- H332 — Harmful if inhaled
Customs & Trade Information
| HS Code | 2921450090 |
|---|---|
| Summary | 2921450090 1-naphthylamine (α-naphthylamine), 2-naphthylamine (β-naphthylamine) and their derivatives; salts thereof。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 5-Amino-1-naphthalenesulfonic acid?
The CAS number of 5-Amino-1-naphthalenesulfonic acid is 84-89-9.
What are the molecular formula and molecular weight of 5-Amino-1-naphthalenesulfonic acid?
5-Amino-1-naphthalenesulfonic acid has molecular formula C10H9NO3S and molecular weight 223.248 g/mol.
Is 5-Amino-1-naphthalenesulfonic acid hazardous?
5-Amino-1-naphthalenesulfonic acid has GHS signal word Danger and hazard statements H312 — Harmful in contact with skin; H314 — Causes severe skin burns and eye damage; H332 — Harmful if inhaled.
What are the upstream and downstream products of 5-Amino-1-naphthalenesulfonic acid?
For 5-Amino-1-naphthalenesulfonic acid, Upstream Products: 1-Naphthylamine, 2-Naphthylamine hydrochloride, N-(1-Naphthyl)acetamide; Downstream Products: Martius Yellow, Dansyl chloride, 5-Amino-1-naphthol-3-sulfonic Acid Hydrate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "5-Amino-1-naphthalenesulfonic acid (CAS 84-89-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1004567-3 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.