Technical Terms

I Company No: 875083-W I
GLOSSARY OF TECHNICAL TERMS
To facilitate better understanding of our business, the following glossary provides a description of some of the technical terms and abbreviations commonly found in our industry. The terms and their assigned meanings may not correspond to standard industry or common meanings, or usage of these
terms, as the case may be:­Acetone Top-Up Acetylene
Argon
ASU
CNG
Cryogenic Distillation Fractional Distillation
Fuming Gas Gas Chromatograph
Gas Mixture
Inert Substance Purified Helium and Hydrogen
Acetone top-up is the process of replenishing an acetylene gas cylinder with acetone
Acetylene is a chemical compound with the chemical formula C2H2 and is a gas under normal atmospheric temperature and pressure
Argon is the element with the atomic number 18 and is represented by the symbol Ar. Under normal atmospheric temperature and pressure, argon exists as a gas
Air Separation Unit, refers to the plant that is used to produce industrial gases such as nitrogen and oxygen by means of Cryogenic Distillation
Compressed natural gas refers to natural gas that has been compressed and stored under pressure, usually in liquid form
Cryogenic distillation refers to distillation or Fractional Distillation that is carried out at a very low temperature
Fractional distillation is a method of physically separating a liquid mixture into its component parts (or fractions), whereby the liquid mixture is heated to a temperature at which several fractions of the liqUid mixture will evaporate
A fuming gas is an industrial gas that is used to kill harmful organisms such as bacteria, mold and fungi
A gas chromatograph is a type of equipment that is commonly used to separate and analyse the chemical composition of a substance that can be vapourised without decomposition
A gas mixture is a blend of two or more gases that are mixed in accordance with a customer’s individual specifications
An inert substance is a substance that does not easily react with other substances
Purified helium and hydrogen refers to helium or hydrogen that has been treated to remove impurities
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ICompany No: 875083-W I
GLOSSARY OF TECHNICAL TERMS
Refrigerants
Specialty Gas
A refrigerant is a compound that is used in a heat cycle that reversibly undergoes a phase change from a gas to a liquid and is used to reduce the temperature of another substance. Refrigerants are commonly used in air conditioning systems
Within the context of the Industrial Gases Industry, specialty gases generally refer to an industrial gas that is not produced with an ASU. Examples of specialty gases include ammonia, ethane and synthetic air
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