C₂H₂

Acetylene

Acetylene is one of the important raw materials for organic synthesis. It is also a monomer for synthetic rubber, synthetic fibers and plastics, and is also used for oxyacetylene welding and cutting.

Pure acetylene is a flammable and toxic gas with a colorless, aromatic odor. The melting point (118.656kPa) is -80.8°C, the boiling point is -84°C, and the relative density is 0.6208 (-82/4°C). Acetylene is active and can undergo addition and polymerization reactions. It can burn at high temperature (3500 ° C) and strong light in oxygen.

Process

Acetylene is manufactured commercially by reaction between calcium carbide and water, and as a by product of ethylene production.

Gas	Acetylene
CAS	74-86-2
Purity	99.9%

Applications

Scientific Research

Acetylene is used with high purity synthetic air or nitrous oxide as a fuel for the flame in atomic absorption flame spectroscopy. This is used in water, soil, food and biological research laboratories where sensitivity and accuracy of results are important.

Industrial

Acetylene is most commonly used in combination with oxygen for cutting or welding materials such as mild steel, where the standard industrial grade is sufficient. Acetylene with low phosphine levels is required for lead brazing or welding.

Plants

Acetylene is used in the cultivation of plant; it improves the forming of new flowers.

Energy

Acetylene is used as a component in calibration gases for the gas, oil as well as chemical industry.

Semiconductor Manufacturing

Used in the preparation of carbon hard mask films for integrated circuit production, particularly in plasma-enhanced chemical vapor deposition (PECVD) processes. Acetylene forms a stable amorphous carbon layer on silicon surfaces, serving as a reliable carbon hard mask in photolithography processes.

Display Panel Manufacturing

Applied in chemical vapor deposition and etching processes during the production of TFT-LCD and OLED panels. As a key precursor for the preparation of amorphous silicon layers and insulating protective films, high-purity acetylene directly impacts the performance and stability of thin-film transistors.

Scientific Analytical Instruments

Widely used as a fuel source in analytical instruments such as atomic absorption spectrometers. In high-precision elemental analysis, the purity of acetylene directly affects the accuracy and reproducibility of analytical results.

Rare Metal Smelting and Metal Processing

Utilized in high-temperature cutting and welding processes, making it an ideal heat source for processing rare metals such as tungsten, molybdenum, tantalum, and niobium. Electronic grade acetylene also plays an important role in surface treatment and heat treatment of high-performance metallic materials.

Frequently Asked Question

What are the safety differences between electronic grade acetylene and traditional industrial acetylene?

Although 4N electronic grade acetylene has a much higher purity than industrial acetylene, its fundamental hazardous characteristics remain unchanged. It is still a highly flammable and explosive gas, with an explosion limit in air of 2.3%–72.3% (by volume). Therefore, strict adherence to operating procedures for flammable and explosive gases is required during use, including explosion-proof, fire-prevention, and anti-static measures. All products provided by Jinhong Gas are accompanied by detailed Safety Data Sheets (SDS), which must be carefully read before use.

What special equipment or conditions are required for using 4N electronic grade acetylene?

To ensure that product purity is not compromised, it is recommended to use a dedicated electronic specialty gas delivery system, including ultra-clean pipelines, specialized pressure regulators, and flow controllers. The operating environment should be kept clean, avoiding the introduction of contaminants such as dust and oil. Operators must receive professional training and be familiar with the properties and handling procedures of electronic specialty gases.

How should the product be transported and stored after ordering?

During transportation, cylinders should be protected from strong vibration and high temperatures. They must be stored in a cool, well-ventilated location, away from heat sources, open flames, flammable materials, and oxidizers. The storage area should also be equipped with appropriate emergency leak-handling equipment.

Gases

Equipment

On-Site Gas Supply

Catalogue

C₂H₂

Acetylene

Process

Applications

Scientific Research

Industrial

Plants

Energy

Semiconductor Manufacturing

Display Panel Manufacturing

Scientific Analytical Instruments

Rare Metal Smelting and Metal Processing

Frequently Asked Question

What are the safety differences between electronic grade acetylene and traditional industrial acetylene?

What special equipment or conditions are required for using 4N electronic grade acetylene?

How should the product be transported and stored after ordering?

Inquiry

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Acetylene

Process

Applications

Scientific Research

Industrial

Plants

Energy

Semiconductor Manufacturing

Display Panel Manufacturing

Scientific Analytical Instruments

Rare Metal Smelting and Metal Processing

Frequently Asked Question

What are the safety differences between electronic grade acetylene and traditional industrial acetylene?

What special equipment or conditions are required for using 4N electronic grade acetylene?

How should the product be transported and stored after ordering?

Inquiry

Related Products

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