| Formula / Notation | CO2 |
|---|---|
| CAS Number | 124-38-9 |
| Molecular Weight | 44.009 |
| Melting Point | -109.3 °F (USCG, 1999) |
| Boiling Point | Sublimes (NIOSH, 2024) |
| Density | 1.56 at -110.2 °F (USCG, 1999) - Denser than water; will sink |
| Solubility | 0.2 % at 77 °F (NIOSH, 2024) |
| Appearance | Carbon dioxide appears as a colorless odorless gas at atmospheric temperatures and pressures. Relatively nontoxic and noncombustible. Heavier than air and may asphyxiate by the displacement of air.... |
| Also Known As | carbonic anhydride; 124-38-9; carbonic acid gas; Carbonic acid anhydride; methanedione; Carbonica; Kohlendioxyd; Carbon oxide, di-; Kohlensaure; Khladon 744 |
| Category | Inorganic Compounds |
What is Carbon dioxide?
Carbon dioxide is a one-carbon compound with formula CO2 in which the carbon is attached to each oxygen atom by a double bond. A colourless, odourless gas under normal conditions, it is produced during respiration by all animals, fungi and microorganisms that depend directly or indirectly on living or decaying plants for food. It has a role as a vasodilator agent, an anaesthetic, a solvent, an antagonist, a mouse metabolite, a Saccharomyces cerevisiae metabolite, a member of greenhouse gas, an Escherichia coli metabolite, a human metabolite, a member of food packaging gas, a food propellant and a refrigerant. It is a gas molecular entity, a carbon oxide and a one-carbon compound.
Formula & Notation
IUPAC Name: carbon dioxide
Other Names / Synonyms: carbonic anhydride; 124-38-9; carbonic acid gas; Carbonic acid anhydride; methanedione; Carbonica; Kohlendioxyd; Carbon oxide, di-; Kohlensaure; Khladon 744
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | -109.3 °F (USCG, 1999) |
| Boiling Point | Sublimes (NIOSH, 2024) |
| Density | 1.56 at -110.2 °F (USCG, 1999) - Denser than water; will sink |
| Molecular Weight | 44.009 |
| Solubility | 0.2 % at 77 °F (NIOSH, 2024) |
| Appearance | Carbon dioxide appears as a colorless odorless gas at atmospheric temperatures and pressures. Relatively nontoxic and noncombustible. Heavier than air and may asphyxiate by the displacement of air.... |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Carbon dioxide is a one-carbon compound with formula CO2 in which the carbon is attached to each oxygen atom by a double bond. A colourless, odourless gas under normal conditions, it is produced during respiration by all animals, fungi and microorganisms that depend directly or indirectly on living or decaying plants for food. It has a role as a vasodilator agent, an anaesthetic, a solvent, an antagonist, a mouse metabolite, a Saccharomyces cerevisiae metabolite, a member of greenhouse gas, an Escherichia coli metabolite, a human metabolite, a member of food packaging gas, a food propellant and a refrigerant. It is a gas molecular entity, a carbon oxide and a one-carbon compound.
Used in industrial processes, materials science, semiconductor manufacture, ceramics, or as a catalyst.
May be corrosive, toxic, or an oxidising agent. Handle in well-ventilated area. Consult SDS before use.
The formula or notation for Carbon dioxide is: CO2