Acetylene Gas
Acetylene GasAcetylene (C₂H₂), with the highest flame temperature among common hydrocarbon fuels (up to 3,300°C combined with pure oxygen), plays a key role in welding, metal cutting, brazing and chemical synthesis. We supply this product in various purity grades to meet the needs of petrochemical industries, industrial welding and cutting workshops, research laboratories and specialty gas-mixing companies.
Depends on the selected grade Standard certificate
ISIRI/DIN Gas group
Unsaturated hydrocarbon (alkyne)
Global standard acetylene gas grades
Acetylene gas is supplied exclusively for industrial and laboratory use, and using it requires specialized control equipment and expertise. Since this gas plays a decisive role in the quality of processes such as welding, cutting and precise laboratory analysis, knowing its technical classifications and distribution methods is the key to an economical and efficient purchase. Choosing a technical grade that fits your project ensures accurate results and optimizes your budget. The table below follows the naming commonly used by international specialty gas suppliers:
Grade 2.6
Grade 3.0–3.7
Specifications Table
| Chemical formula | Molecular mass | Color | Odor | Absolute gas density | Relative density to air | Boiling point | Melting point | Oxy-acetylene flame temperature | Solubility in acetone | Flammability |
|---|---|---|---|---|---|---|---|---|---|---|
| C₂H₂ | 26.04g/mol | Colorless | Garlic-like | About 1.1 kg/m³ | 0.91 | 84°C- | 81°C- | 3100°C - 3300°C | Very high | Very high |
Acetylene gas standards and safety
Because of its carbon–carbon triple bond, acetylene is unstable in its free (undissolved) state at pressures above about 15 to 17 bar and prone to explosive decomposition; for this reason it is always stored and supplied as a dissolved gas in dedicated cylinders, not in ordinary compressed gas cylinders. The distinctive garlic-like smell of commercial acetylene (from phosphine/H2S impurities) helps detect leaks quickly and is one of the gas’s natural safety mechanisms.
In terms of health, acetylene is a simple asphyxiant, not a toxic chemical; its main hazard in a closed, unventilated space is displacing the oxygen in the air, which can cause headaches, dizziness and, at high concentrations, unconsciousness. Work with this gas must therefore always be done in a well-ventilated area.
Acetylene gas supply methods
Acetylene gas is supplied in two ways depending on the customer’s needs: in ready-to-use cylinders or as bulk supply for production lines and petrochemical plants. Bulk and wholesale supply of acetylene for high-consumption industries is also available by prior arrangement and review of the requested volume.
For general welding and cutting of metals, industrial grade (98% purity and above) is enough. For more sensitive processes such as precision welding or the automotive industry, chemical synthesis grade (99 to 99.5%) is recommended.
Industrial grade is designed for general welding and cutting and has a purity of 98% and above. Laboratory grade (grade 2.6, 99.6% purity) has far fewer impurities and is intended for sensitive uses such as atomic absorption spectroscopy.
The garlic smell comes from natural impurities in the production process (such as phosphine) and, as a natural safety signal, makes it possible to detect gas leaks quickly.
Yes, bulk supply is available for high-consumption industries such as petrochemicals, by prior arrangement and review of the requested volume.