Carbon Dioxide
Colorless, odorless, nonflammable, slightly acidic, liquefied gas.As a carbon dioxide gas supplier, we offer CO₂ in various forms to support food and beverage production, manufacturing, medical applications, and laboratory environments throughout Colorado.
Download SDS: P-4574
GRADES & SIZES
Carbon Dioxide (CO₂) is available in steel or aluminum cylinders, with and without handles. Our most popular sizes and grades are below. Don’t see what you need? Send us a message, and we’ll get back to you in 1 day.
AVAILABILITY
Carbon Dioxide is available for purchase with a new cylinder or through CO₂ tank refill and exchange services in Colorado at any of our 8 Front Range General Air locations. Business customers can purchase Carbon Dioxide in a store, request delivery, and receive bulk quantities.
The table below lists each carbon dioxide cylinder size alongside its volume in pounds (lbs)
| Size | Volume | CGA |
|---|---|---|
| #1 | 75 lbs | 320 |
| #2 | 50 lbs | |
| #4 | 25 lbs |
Trace Impurities
| CO2 | O2 | H2O | THC | N2 |
|---|---|---|---|---|
| 99.99% | 15 ppm | 10 ppm | 10 ppm | 70 ppm |
The table below lists each carbon dioxide cylinder size alongside its volume in pounds (lbs)
| Size | Volume | CGA |
|---|---|---|
| #1 | 75 lbs | 320 |
| #2 | 50 lbs | |
| #4 | 25 lbs |
Trace Impurities
| CO2 | O2 | H2O |
|---|---|---|
| 99.99% | 10 ppm | 10 ppm |
The table below lists each carbon dioxide cylinder size alongside its volume in pounds (lbs)
| Size | Volume | CGA |
|---|---|---|
| #5 | 23 lbs | 320 |
| #6 | 20 lbs |
Trace Impurities
| CO2 | O2 | H2O |
|---|---|---|
| 99.99% | 10 ppm | 10 ppm |
The table below lists each carbon dioxide cylinder size alongside its volume in pounds (lbs)
| Size | Volume | CGA |
|---|---|---|
| #1 | 75 lbs | 320 |
| #2 | 50 lbs | |
| #4 | 25 lbs |
Trace Impurities
| CO2 | H2O | Air |
|---|---|---|
| 99.00% | 1.00% | 10 ppm |
The table below lists each carbon dioxide cylinder size alongside its volume in pounds (lbs)
| Size | Volume | CGA |
|---|---|---|
| #1 | 75 lbs | 320 |
| #2 | 50 lbs | |
| #4 | 25 lbs |
Trace Impurities
| CO2 | THC | H2O | O2 |
|---|---|---|---|
| 99.90% | 20 ppm | 20 ppm | 30 ppm |
The table below lists each carbon dioxide cylinder size alongside its volume in pounds (lbs)
| Size | Volume | CGA |
|---|---|---|
| #1 | 75 lbs | 320 |
| #2 | 50 lbs | |
| #4 | 25 lbs |
Trace Impurities
| CO2 | THC | H2O |
|---|---|---|
| 98.00% | 10 ppm | 120 ppm |
The table below lists each carbon dioxide cylinder size alongside its volume in pounds (lbs)
| Size | Volume | CGA |
|---|---|---|
| E | 7 lbs | 940 |
| D | 4 lbs |
Trace Impurities
| CO2 | Air | H2O | CH4 | H2S | NO/NO2 | SO2 | CO | PASS |
|---|---|---|---|---|---|---|---|---|
| 99.00% | 1.00% | 150 mg/m3 | 25 ppm | 1 ppm | 2.5 ppm | 5 ppm | 10 ppm | PASS |
Common Applications for Carbon Dioxide
- pH control for swimming pools
- Paintball for propulsion
- CO₂ enrichment to boost plant growth
- Calibration gas
- Dry ice manufacturing
- Freezing food
- Dry cleaning
- Industrial de-greasing
- Antibacterial applications
- Fog machines
- Sanitizing water
Purchase or Ask a Question
Frequently Asked Questions
What is R744?
R744 is a safer and more efficient alternative to traditional refrigerants.
- Non-toxic
- Non-flammable
- Economical
- Energy efficient
- Eco-Friendly
R744 grade CO2 is the optimal choice for equipment due to it’s low moisture content. The higher purity gas prevents corrosion and ice crystal deposits that can be damaging. Additionally, CO2 is non-toxic and non-flammable, more environmentally friendly and economical, and more energy efficient than common refrigerant alternatives.
It is commonly used in:
- Commercial Refrigeration
- Industrial Refrigeration
- Heat Pumps
- Vending Machines
- Transport Refrigeration
- Ice Rinks
How do plants use Carbon Dioxide?
Plants use light and carbon dioxide to synthesize sugar, which allows them to grow. Introducing additional carbon dioxide to the environment means more sugar is synthesized, making plants grow bigger and faster.
What does anaerobic mean?
Anaerobic means without Oxygen.
Does General Air supply bulk CO₂ in Colorado?
Yes. General Air supplies CO₂ in bulk liquid form for high-volume operations, including large breweries, food processing facilities, and industrial users across the Front Range. Contact General Air to discuss bulk CO₂ supply for your facility.
What are the standard CO₂ cylinder sizes?
General Air stocks CO₂ cylinders measured by liquid CO₂ weight: 4 lbs (D), 7 lbs (E), 20lbs (#5), 23 lbs (#6), 25 lbs (#4), 50 lbs (#2), and 75 lbs (#1). CO₂ cylinders are sized by liquid weight rather than cubic feet, which is how most other gases are measured. Contact General Air for current availability by grade.
Industries We Serve
Manufacturing: CO₂ is one of the most common shielding gases in MIG welding. Pure CO₂ produces deep penetration and is cost-effective for welding mild steel, though it generates more spatter than argon-blend mixes.
Construction: CO₂ is used in concrete curing to enhance strength and durability.
Medical: Medical-grade CO₂ is used in surgical procedures, respiratory therapy, and as a component in medical gas mixtures.
Food & Beverage: CO₂ is widely used for carbonation in soft drinks, sparkling water, and other beverages, and for packaging for freshness.
Breweries: Breweries use CO₂ to carbonate beer, mixed with N₂ to push liquids through tanks and lines, and maintain quality during bottling and kegging.
Automotive: Used in emissions testing and certain cooling systems.
Laboratory: Carbon dioxide supports laboratory research, calibration processes, and controlled testing environments that need precise gas delivery.
Agriculture & Greenhouses: CO₂ is injected into greenhouse environments to boost plant growth, yield, and crop cycle efficiency.