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dinitrogen trioxide

Also known as: 1,3-Diaza-2,4,5-trioxabicyclo[1.1.1]pentane, Chebi:29799, Dinitrogen trioxide, Dinitrogen trioxide (gas) (unlabelled N2O3), Distickstofftrioxyd, N-oxonitramide, NITROGEN TRIOXIDE, NITROGENSESQUIOXIDE, Nitrogen oxide (N2O3), Nitrogen trioxide by volume or more, Nitrogen trioxide: (Dinitrogen trioxide), Nitrous anhydride, Trioxido-1kappa(2)o,2kappao-dinitrogen(N--N), nitrogen sesquioxide, o2Nno

dinitrogen trioxide (CAS 10544-73-7) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula N2O3 and a molecular weight of 76.01160 g/mol. Key property: a density of 1.94g/cm3. It is classified under GHS with signal word Danger and hazard statements H270, H280 and H310. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
10544-73-7
Jingsj CID
J-10181-5
Molecular Formula
N2O3
Molecular Weight
76.01160 g/mol
Category
Inorganic Chemicals
Last updated
8/21/2026
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Physicochemical Properties

Density1.94g/cm3
Exact Mass75.99090
PSA68.09000
LogP0.36580
Refractive Index1.531

GHS Safety & Compliance

Oxidising / Compressed Gas / Corrosion / Acute ToxicitySignal word: Danger
  • H270
  • H280
  • H310
  • H330 — Fatal if inhaled
  • H314 — Causes severe skin burns and eye damage

Frequently Asked Questions

What is the CAS number of dinitrogen trioxide?

The CAS number of dinitrogen trioxide is 10544-73-7.

What are the molecular formula and molecular weight of dinitrogen trioxide?

dinitrogen trioxide has molecular formula N2O3 and molecular weight 76.01160 g/mol.

Is dinitrogen trioxide hazardous?

dinitrogen trioxide has GHS signal word Danger and hazard statements H270; H280; H310.

What are the upstream and downstream products of dinitrogen trioxide?

For dinitrogen trioxide, Upstream Products: nitric oxide, nitrogen dioxide, Sodium nitrite; Downstream Products: bismuth oxyiodide, 1-Nitronaphthalene, 2-Nitronaphthalene.

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

Last updated:

How to cite: Jingsj. "dinitrogen trioxide (CAS 10544-73-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-10181-5 (accessed 2026-11-09).

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