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2-Amino-4-nitrophenol

Also known as: 2-Hydroxy-5-nitroaniline, 4-nitro-2-aminophenol, 4-NAP, p-Nitro-o-aminophenol, 2-Amino-1-hydroxy-4-nitrobenzene, 1-amino-2-hydroxy-5-nitrobenzene, 3-Amino-4-hydroxynitrobenzene, Ursol 4GL, Rodol 42, Phenol, 2-amino-4-nitro-, ZR BQ ENW

2-Amino-4-nitrophenol (CAS 99-57-0) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C6H6N2O3 and a molecular weight of 154.123 g/mol. Key properties include a melting point of 140-143 °C(lit.), a boiling point of 368.1±32.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 176.4±25.1 °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 Aug 21, 2026.

CAS No.
99-57-0
Jingsj CID
J-36067-8
Molecular Formula
C6H6N2O3
Molecular Weight
154.123 g/mol
Category
Alcohols
Last updated
8/21/2026

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Physicochemical Properties

Melting Point140-143 °C(lit.)
Boiling Point368.1±32.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point176.4±25.1 °C
Exact Mass154.037842
PSA92.07000
LogP1.23
Vapor Pressure0.0±0.9 mmHg at 25°C
Refractive Index1.689
Additional Propertyslightly soluble

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 2-Amino-4-nitrophenol?

The CAS number of 2-Amino-4-nitrophenol is 99-57-0.

What are the molecular formula and molecular weight of 2-Amino-4-nitrophenol?

2-Amino-4-nitrophenol has molecular formula C6H6N2O3 and molecular weight 154.123 g/mol.

Is 2-Amino-4-nitrophenol hazardous?

2-Amino-4-nitrophenol 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 2-Amino-4-nitrophenol?

For 2-Amino-4-nitrophenol, Upstream Products: 2-Aminophenol, 4-Nitro-o-phenylenediamine, 4-Nitroanisole; Downstream Products: 2-Chloro-N-(2-hydroxy-5-nitrophenyl)acetamide, 2-Methyl-5-nitrobenzo[d]oxazole, Nitroxoline.

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-Amino-4-nitrophenol (CAS 99-57-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36067-8 (accessed 2026-11-09).

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