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methanedione

Also known as: (13C)Carbon dioxide, (13C)Methanedione, 13C Labeled carbon dioxide, 13C Labeled carbon dioxide 13CO2, 13C Labeled carbon dioxide,13CO2, 13CO2, 13CO2 CALIBRANT GAS, CARBON DIOXIDE (13C), CARBON DIOXIDE- 13C, CARBON-(13)C DIOXIDE, CARBON-(13)C DIOXIDE, 99 (ATOM % (13)C), CARBON-13C DIOXIDE, CARBON-13C DIOXIDE, 99 ATOM % 13C,<3 ATOM % 18O, MFCD00064513

methanedione (CAS 1111-72-4) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula CO2 and a molecular weight of 45.00220 g/mol. Key properties include a melting point of -78ºC (subl.)(lit.) and a density of 1.52 (vs air). It is classified under GHS with signal word Warning and hazard statements H280. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
1111-72-4
Jingsj CID
J-7813-7
Molecular Formula
CO2
Molecular Weight
45.00220 g/mol
Category
Organic Compounds
Last updated
11/2/2026
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Physicochemical Properties

Melting Point-78ºC (subl.)(lit.)
Density1.52 (vs air)
Exact Mass44.99320
PSA34.14000

GHS Safety & Compliance

Compressed GasSignal word: Warning
  • H280

Frequently Asked Questions

What is the CAS number of methanedione?

The CAS number of methanedione is 1111-72-4.

What are the molecular formula and molecular weight of methanedione?

methanedione has molecular formula CO2 and molecular weight 45.00220 g/mol.

Is methanedione hazardous?

methanedione has GHS signal word Warning and hazard statements H280.

What are the upstream and downstream products of methanedione?

For methanedione, Upstream Products: methylidyneoxidanium, Barium carbonate-13C, Heavy water; Downstream Products: Iodomethane-13C, Acetyl chloride-1-13C, Trimethoxyboroxine.

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

Last updated:

How to cite: Jingsj. "methanedione (CAS 1111-72-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-7813-7 (accessed 2026-11-09).

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