Foreign name: carbon dioxide

Alias: Carbonic acid gas, carbonic anhydride, dry ice (solid)

Chemical formula: CO ₂

Molecular weight: 44.0095

CAS login number: 124-38-9

EINECS login number: 204-696-9

Melting point: -56.6 ℃ (The melting point of carbon dioxide is measured under high pressure of 527kPa, and there is no liquid carbon dioxide under normal pressure)

Boiling point: -78.5 ℃ (sublimation)

Water solubility: less than 0.05% (22.9 ℃)

Appearance: Under normal temperature and pressure, it is a colorless, odorless, or slightly sour gas

Application: Refrigeration perishable food, making refrigerants, manufacturing carbonated soft drinks, etc

Security Description: S9

UN Dangerous Goods Number: 1013

Gaseous density: 1.977g/L (0 ℃, 101.325kPa)

Liquid density: 0.9295 kg/L (0 ℃, 101.3485 kPa)

Solid density: 1.56kg/L (-79 ℃)

Three phase point: -56.6 ℃ (517.97kPa)

Preparation method: Preparation by reaction of limestone and dilute hydrochloric acid

Molecular diameter: 0.35-0.51nm