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4-Nitropyridine 1-oxide

Also known as: 4-Nitropyridine N-oxide, Pyridine, 4-nitro-, 1-oxide, 4-Nitropyridine-1-oxide, 4-Nitropyridine-N-oxide, 4-Nitropyridine 1-oxide

4-Nitropyridine 1-oxide (CAS 1074-98-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H6N2O3 and a molecular weight of 154.12500 g/mol. Key properties include a melting point of 135-139 °C, a boiling point of 397.2±15.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 194.0±20.4 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
1074-98-2
Jingsj CID
J-1062296-5
Molecular Formula
C6H6N2O3
Molecular Weight
154.12500 g/mol
Category
Pharma Intermediates
Last updated
11/2/2026
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Physicochemical Properties

Melting Point135-139 °C
Boiling Point397.2±15.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point194.0±20.4 °C
Exact Mass140.022186
PSA71.28000
LogP-0.55
Vapor Pressure0.0±0.9 mmHg at 25°C
Refractive Index1.601

GHS Safety & Compliance

Irritant / Health HazardSignal word: Warning
  • H302 — Harmful if swallowed
  • H312 — Harmful in contact with skin
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H332 — Harmful if inhaled
  • H335 — May cause respiratory irritation
  • H351 — Suspected of causing cancer

Frequently Asked Questions

What is the CAS number of 4-Nitropyridine 1-oxide?

The CAS number of 4-Nitropyridine 1-oxide is 1074-98-2.

What are the molecular formula and molecular weight of 4-Nitropyridine 1-oxide?

4-Nitropyridine 1-oxide has molecular formula C6H6N2O3 and molecular weight 154.12500 g/mol.

Is 4-Nitropyridine 1-oxide hazardous?

4-Nitropyridine 1-oxide has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H315 — Causes skin irritation.

What are the upstream and downstream products of 4-Nitropyridine 1-oxide?

For 4-Nitropyridine 1-oxide, Upstream Products: 3-Methylpyridine N-oxide, 3-Methylpyridine; Downstream Products: 1-(benzenesulfonyl)-1H-pyrrolo[3,2-c]pyridine, 4-Aminopyridine-3-carbaldehyde, 3-methyl-N-nitropyridin-4-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-Nitropyridine 1-oxide (CAS 1074-98-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1062296-5 (accessed 2026-11-09).

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