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Acetylene (C2H2) is a colorless, highly flammable gas.
Used in optical spectrometry as an instrumentation gas; used in atomic absorption for elemental analysis as an instrumentation gas. Used as a fuel gas in atomic absorption spectrometry for elemental analysis.
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Acetylene is a colorless and tasteless gas with a garlic-like odor. It is flammable and can be an asphyxiant. In order to prevent explosive decomposition, acetylene is supplied in cylinders filled with a porous mass packing material that is saturated with acetone or other suitable solvent in which the acetylene is actually dissolved. The specifications shown are on a solvent free basis.
The specifications for acetylene are found in the Compressed Gas Association (CGA) Pamphlet G-1.1. Grade D is considered commercial acetylene.
(Units in ppm (v/v) unless show otherwise)
|Limiting Characteristics||CGA G-1.1
|Acetylene Minimum, %||98||98.8|
|Total Sulfur (calculated as H2S)||--||.006%|
|Oxygen||--||.01 - .1%|
|Nitrogen||--||.02 - .2%|
Certain acetylene plants do not purify the generated acetylene since for most purposes there is no demand for high purity acetylene.