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methylidyneoxidanium

Also known as: 13C Labeled carbon monoxide, 18O, 95%), CARBON MONOXIDE (13C), CARBON MONOXIDE (13C, 99%) (<5% 18O), CARBON-13C MONOXIDE, CARBON-13C MONOXIDE, 99 ATOM % 13C, < 5ATOM % 18O, CARBON-13C MONOXIDE-16O, CARBON-13C MONOXIDE-16O (GAS) 99.93%16O,, Carbon-13C monoxide, MFCD00064502

methylidyneoxidanium (CAS 1641-69-6) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula CO and a molecular weight of 29.00280 g/mol. Key properties include a melting point of -207ºC(lit.) and a density of 1.25 g/mL at 25ºC(lit.). It is classified under GHS with signal word Danger and hazard statements H220, H280 and H331 — Toxic if inhaled. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
1641-69-6
Jingsj CID
J-34836-7
Molecular Formula
CO
Molecular Weight
29.00280 g/mol
Category
Organic Compounds
Last updated
11/2/2026
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Physicochemical Properties

Melting Point-207ºC(lit.)
Density1.25 g/mL at 25ºC(lit.)
Exact Mass28.99830

GHS Safety & Compliance

Flammable / Compressed Gas / Acute Toxicity / Health HazardSignal word: Danger
  • H220
  • H280
  • H331 — Toxic if inhaled
  • H372 — Causes damage to organs through prolonged exposure

Frequently Asked Questions

What is the CAS number of methylidyneoxidanium?

The CAS number of methylidyneoxidanium is 1641-69-6.

What are the molecular formula and molecular weight of methylidyneoxidanium?

methylidyneoxidanium has molecular formula CO and molecular weight 29.00280 g/mol.

Is methylidyneoxidanium hazardous?

methylidyneoxidanium has GHS signal word Danger and hazard statements H220; H280; H331 — Toxic if inhaled.

What are the upstream and downstream products of methylidyneoxidanium?

For methylidyneoxidanium, Upstream Products: methanedione, Bis(pinacolato)diboron, Water; Downstream Products: Benzaldehyde-carbonyl-13C, Benzoic-13C Acid, Butyric acid-13C1.

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

Last updated:

How to cite: Jingsj. "methylidyneoxidanium (CAS 1641-69-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-34836-7 (accessed 2026-11-09).

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