Electronic CO2
Content introduction
1、 Product introduction
Carbon dioxide is a colorless, odorless, non combustion supporting, non combustible asphyxiant gas, slightly denser than air, soluble in water, and generates carbonic acid. solid state
Carbon dioxide is commonly called dry ice after being compressed. Carbon dioxide is considered to be the main source of aggravating the greenhouse effect.
Chinese name: carbon dioxide | Molecular formula：CO2 |
English name：carbon dioxide | Relative molecular weight：44.01 |
CAS No：124-38-9 | Hazard category: Class 2.2 incombustible gas |
UN No: 1013 (gas) 2187 (liquid) | Solubility: soluble in water |
Melting point (517.97kPa): - 56.6 ℃ | Boiling point (101.325kPa, sublimation point): - 78.5 ℃ |
critical temperature：31.0℃ | Liquid density (273.15K, 3485kPa): 929.5kg/m3 |
critical pressure：7.38MPa | Relative density (gas, air=1): 1.53 |
2、 Technical standards
Inspection items | GB/T23938-2009 | |
二氧化碳（v/v）% ≥ | 99.995 | 99.999 |
氢气ppmv ≤ | 2 | 0.5 |
氧气ppmv ≤ | 5 | 1 |
氮气ppmv ≤ | 30 | 3 |
一氧化碳ppmv ≤ | 2 | 0.5 |
THC含量ppmv ≤ | 3 | 2 |
水分ppmv ≤ | 8 | 3 |
3、 Packaging specification (steel cylinder, Y cylinder)
Volume (L) | 40 | 440 |
Filling capacity (kg) | 22 | 250 |
Valve model | CGA580 | DISS716 |
Other specifications can be provided according to customer requirements.
4、 Application of carbon dioxide
High purity carbon dioxide is used for laser gas of laser cutting machine, embryo cell culture, medical critical extraction, oilfield fracturing and well flushing, dry ice
Low temperature preservation and transportation of food, fire extinguishing agent, coolant, insecticide, plant growth promoter, fermentation industry, drugs (local anesthesia), sugar industry
Glue and animal glue manufacturing are used to transport compressed gas of flammable liquid, configure standard gas, special mixture, etc. Electronic grade carbon dioxide applied in half
Oxidation, diffusion and chemical vapor deposition in conductor manufacturing.
5、 Precautions
The workplace shall be provided with good natural ventilation conditions, and the operators must be specially trained and strictly abide by the operating procedures. Bottled carbon dioxide
It is a high-pressure liquefied gas. It can only be used after being depressurized by a qualified pressure reducer. The cylinder trolley shall be used for handling, and the cylinder shall be loaded and unloaded gently to prevent the cylinder
And accessories are damaged. Asphyxia may occur when the oxygen content is lower than 19.5% due to the increase of carbon dioxide content. Each bottle of carbon dioxide is used to exhaust gas
The residual pressure in the cylinder shall be kept at 0.3MPa, which shall not be less than 0.2MPa. The cylinder valve shall be closed to ensure the gas quality and use safety.
Carbon dioxide shall be stacked by category during transportation, storage and use. Combustible gas and combustion supporting gas shall not be stacked together, and shall not be close to open fire and heat source,
Keep away from fire, oil wax, explosion, heavy throwing, impact, baking with open fire and rough loading and unloading. There is cylinder inspection on the cylinder neck
As for the inspection time, the unqualified cylinders shall be inspected by the qualified pressure vessel inspection unit by the supplier of Philips special gas. Do not use
Use expired cylinders.
