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4-Amino-1-naphthol hydrochloride

Also known as: 1-Naphthalenol, 4-amino-, hydrochloride (1:1), 1-Amino-4-naphthol hydrochloride, 4-Aminonaphthalen-1-ol hydrochloride, 4-Hydroxy-1-naphthylamine hydrochloride, 1-Naphthol, 4-amino-, hydrochloride, 4-Amino-1-hydroxynaphthalene hydrochloride

4-Amino-1-naphthol hydrochloride (CAS 5959-56-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H10ClNO and a molecular weight of 195.64900 g/mol. Key properties include a melting point of 273 °C (dec.)(lit.), a boiling point of 386.8±25.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 187.8±23.2 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
5959-56-8
Jingsj CID
J-1360927-3
Molecular Formula
C10H10ClNO
Molecular Weight
195.64900 g/mol
Category
Organic Acids
Last updated
11/2/2026

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Physicochemical Properties

Melting Point273 °C (dec.)(lit.)
Boiling Point386.8±25.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point187.8±23.2 °C
Exact Mass159.068420
PSA46.25000
LogP0.94
Vapor Pressure0.0±0.9 mmHg at 25°C
Refractive Index1.742

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2922299090
Summary2922299090. other amino-naphthols and other amino-phenols, other than those containing more than one kind of oxygen function, their ethers and esters; salts thereof. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4-Amino-1-naphthol hydrochloride?

The CAS number of 4-Amino-1-naphthol hydrochloride is 5959-56-8.

What are the molecular formula and molecular weight of 4-Amino-1-naphthol hydrochloride?

4-Amino-1-naphthol hydrochloride has molecular formula C10H10ClNO and molecular weight 195.64900 g/mol.

Is 4-Amino-1-naphthol hydrochloride hazardous?

4-Amino-1-naphthol hydrochloride has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of 4-Amino-1-naphthol hydrochloride?

For 4-Amino-1-naphthol hydrochloride, Downstream Products: tert-Butyl (4-hydroxynaphthalen-1-yl)carbamate, 1,4-Naphthoquinone, 4-(2-morpholin-4-ylethoxy)naphthalen-1-amine.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "4-Amino-1-naphthol hydrochloride (CAS 5959-56-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1360927-3 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.