Carbon Monoxide Standard Gas

Product Category: Carbon Monoxide Standard Gas

Chinese Name: Carbon Monoxide Standard Gas, CO Standard Gas (CO Standard Gas)
Filling Pressure: Generally 9.81 MPa, requires减压 after use.
Cylinder Valve: Zinc-plated copper cylinder valve QF-011, W21.8-14R outlet; Copper cylinder valve QF-30, W21.8-14L; Copper cylinder valve QF-2, G5/8 outlet thread.
Packaging: 4L aluminum alloy cylinder, 8L aluminum alloy cylinder; 40L carbon steel cylinder

CO Standard Gas Parameters

Chinese Name: Carbon Monoxide Standard Gas, CO Standard Gas (CO Standard Gas)

Filling Pressure: Generally 9.81 MPa, requires减压 after use.

Cylinder Valve: Zinc-plated copper cylinder valve QF-011, W21.8-14R outlet; Copper cylinder valve QF-30, W21.8-14L; Copper cylinder valve QF-2, G5/8 outlet thread.

Packaging: 4L aluminum alloy cylinder, 8L aluminum alloy cylinder; 40L carbon steel cylinder

Standard Regulator: Copper regulator, outlet can be 1/4", 3/8" ferrule, M16-15, etc., outlet pressure gauge 0~1 MPa, 0~1.6 MPa, 0~2.5 MPa, etc., can be customized according to customer requirements.

Product Concentration Unit: ppm, mol/mol, mg/mol, mol/L, etc., such as 50ppm carbon monoxide, nitrogen balance gas.

Basic Knowledge of Carbon Monoxide

Molecular Weight: 28.0104

Melting Point (Triple Point 15.3 kPa): -205.1°C

Boiling Point (101.325 kPa): -191.5°C

Liquid Density (-191.5°C, 101.325 kPa): 789 kg/m³

Gas Density (0°C, 101.325 kPa): 1.2504 kg/m³

Relative Density (Gas, Air=1, 101.325 kPa): 0.967

Specific Volume (21.1°C, 101.325 kPa): 0.8615 m³/kg

Gas-Liquid Volume Ratio (15°C, 100 kPa): 674 L/L

Critical Temperature: -140.2°C

Critical Pressure: 3499 kPa

Critical Density: 301 kg/m³

Heat of Fusion (-205.01°C, 15.36 kPa): 29.9 kJ/kg

Heat of Vaporization (-191.53°C, 101.325 kPa): 215.2 kJ/kg

Specific Heat Capacity (Gas, 25°C, 101.325 kPa): Cp=1043 J/(kg•K) Cv=742 J/(kg•K)

Specific Heat Ratio (Gas, 25°C, 101.325 kPa): Cp/Cv=1.404

Vapor Pressure (-203.43°C): 20.00 kPa

(-180°C): 305 kPa

(140°C): 3500 kPa

Viscosity (101.325 kPa, 0°C): 0.01662 mPa•S

Surface Tension (-193°C): 9.8 mN/m

Thermal Conductivity (101.325 kPa, 0°C): 0.02303 W/(m•K)

Refractive Index (Gas, 0°C, 101.325 kPa): 1.0003342

Flammable Range in Air (20°C, 101.325 kPa): 12.5%～74%

Minimum Ignition Temperature in Air (101.325 kPa): 630°C

Most Easily Ignited Concentration: 30%

Concentration for Maximum Explosion Pressure: 35.2%

Maximum Explosion Pressure: 6.3 kg/cm³

Toxicity Level: 2

Flammability Level: 4

Explosiveness Level: 0

Fire Hazard: Extremely High

Carbon monoxide is a colorless, odorless, tasteless, non-irritating asphyxiating gas under normal temperature and pressure. It is flammable in air, burning with a blue flame. It forms explosive mixtures with air. It does not react with acids, alkalis, or water. Under high temperature and pressure, it reacts with metals like iron, chromium, and nickel to form carbonyl metals, combines with chlorine to form phosgene, and forms carbonyl metal compounds with carbonyl metals. Carbon monoxide has a reducing effect; in the presence of manganese and copper oxides at room temperature, it can be oxidized to CO2. Some gas masks utilize this principle.

The maximum allowable concentration of carbon monoxide in air is 20 mg/m³, with a flammable range of approximately 12.5% to 74%. It is mainly used for controlling carbon monoxide concentrations in the working air environments of petrochemical plants, calibrating carbon monoxide alarms in mines and households, and calibrating combustible gas alarm equipment installed in natural gas plants, natural gas filling stations, and other places where combustible gases may leak.