Carbon Dioxide N5.0 (Research Grade CO2) Cylinder

In high concentrations, Carbon Dioxide N5.0 may cause asphyxiation. Symptoms may include loss of
mobility/consciousness. Victim may not be aware of asphyxiation. Remove victim
to uncontaminated area wearing self-contained breathing apparatus. Keep victim
warm and rested. Call a doctor. Apply artificial respiration if breathing has stopped.
Low concentrations of Carbon Dioxide N5.0 (Research Grade CO2) Cylinder cause increased respiration and headaches.

Pure gases are classified by grade – Carbon Dioxide N5.0

The first digit of the grade classification indicates the ‘number of nines’ purity, e.g. N3.0 = 99.9% purity.

The second digit is the number following the last nine, e.g. N4.6 helium has a guaranteed minimum purity level of 99.996%.

Chemical name Carbon dioxide
INDEX No.: –
CAS-No.: 124-38-9
EC No.: 204-696-9
REACH Registration No.: Listed in Annex IV/V of Regulation (EC) No 1907/2006 (REACH), exempted from
registration.
Purity: 100%
The purity of the substance in this section is used for classification only, and does
not represent the actual purity of the substance as supplied, for which other
documentation should be consulted.
Trade name: Carbon Dioxide Food Grade, R744, Laserpure, CP Grade

Carbon Dioxide N5.0 Identified uses:

Industrial and professional. Perform risk assessment prior to use. Aerosol
propellant. Balance gas for mixtures. Beverage applications. Biocidal uses.
Blanketing gas. Blast cleaning. Calibration gas. Carrier gas. Chemical
synthesis. Combustion, melting and cutting processes. Cooling applications.
Fire suppressant gas. Food freezing. Food packaging gas. Freezing, Cooling
and heat transfer. Inerting gas. Inflation systems. Laboratory use. Laser gas.
Plant growth promoter. Pressure head gas, operational assist gas in pressure
systems. Process gas. Purge gas. Refrigerant. Solvent for extraction. Special
effects (entertainment). Test gas.
Consumer use. Propellant gas. Shielding gas in gas welding
It is the responsibility of the end user to ensure that the product as supplied is
suitable for its intended use.

Carbon Dioxide N5.0 Specification

99.999% minimum
→ nitrogen ≤4 ppm
→ oxygen ≤1 ppm
→ carbon monoxide ≤1 ppm
→ total hydrocarbons ≤1 ppm
→ moisture ≤2 ppm
The above concentrations are ideal volume fractions (= mole fractions).