Naphazoline hydrochloride

盐酸萘甲唑啉

Also known as: 2-(1-Naphthylmethyl)-2-imidazoline hydrochloride, 2-(1-Naphthylmethyl)-4,5-dihydro-1H-imidazole hydrochloride, 4,5-Dihydro-2-(1-naphthalenylmethyl)-1H-imidazole monohydrochloride, 1H-Imidazole, 4,5-dihydro-2-(1-naphthalenylmethyl)-, hydrochloride (1:1), Naphazoline HCl, Privine hydrochloride, Naphcon, Naphazoline (hydrochloride), Naphazolinum hydrochloridum

Naphazoline hydrochloride (CAS 550-99-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C14H15ClN2 and a molecular weight of 246.735 g/mol. It is also known as 2-(1-Naphthylmethyl)-2-imidazoline hydrochloride, 2-(1-Naphthylmethyl)-4,5-dihydro-1H-imidazole hydrochloride and 4,5-Dihydro-2-(1-naphthalenylmethyl)-1H-imidazole monohydrochloride. Key properties include a melting point of 254-260 °C, a boiling point of 440.5ºC at 760 mmHg, a density of 1.15 g/cm3 and a flash point of 220.2ºC. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
550-99-2
Jingsj CID
J-1110265-6
Molecular Formula
C14H15ClN2
Chinese Name
盐酸萘甲唑啉
Molecular Weight
246.735 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point254-260 °C
Boiling Point440.5ºC at 760 mmHg
Density1.15 g/cm3
Flash Point220.2ºC

GHS Safety & Compliance

Acute ToxicitySignal word: Danger

Frequently Asked Questions

What is the CAS number of Naphazoline hydrochloride?

The CAS number of Naphazoline hydrochloride is 550-99-2.

What are the molecular formula and molecular weight of Naphazoline hydrochloride?

Naphazoline hydrochloride has molecular formula C14H15ClN2 and molecular weight 246.735 g/mol.

Is Naphazoline hydrochloride hazardous?

Naphazoline hydrochloride has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "Naphazoline hydrochloride (CAS 550-99-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1110265-6 (accessed 2026-10-26).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.