Odorant - Revision history

Jmdonev: 1 revision imported

2026-07-02T20:55:24Z

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energy>Jmdonev at 17:43, 4 June 2026

2026-06-04T17:43:09Z

← Older revision		Revision as of 17:43, 4 June 2026
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	[[Category:Done ~~2018~~-08-03]]		[[Category:Done 2026-07-01]]
	[[File:odoront.png\|300px\|thumb\|Figure 1. Gas odorant injection facility.<ref>Wikimedia Commons By: Glen Dillon [Online], Available: https://commons.wikimedia.org/wiki/File:Gas_pipeline_odourant_injection_facility.JPG</ref>]]		[[File:odoront.png\|300px\|thumb\|Figure 1. Gas odorant injection facility.<ref>Wikimedia Commons By: Glen Dillon [Online], Available: https://commons.wikimedia.org/wiki/File:Gas_pipeline_odourant_injection_facility.JPG</ref>]]
	<onlyinclude>'''Odorants''' are [[chemical]] additives that are mixed in with [[natural gas]] during the odorization process to add an artificial smell to the [[gas]]. These odorants are added as a safety precaution, as natural gas in its pure state is completely odourless.</onlyinclude> These chemicals add a characteristic "gas" smell that can be identified at concentrations of just 1%, reducing the risk that leaks will go undetected and gas will accumulate to hazardous levels. Generally, this odorization process occurs before distribution to customers.<ref>Rebecca Busby.''Natural Gas in Nontechnical Language''. Tulsa, OK, USA: PennWell Corporation, 1999.</ref>		<onlyinclude>'''Odorants''' are [[chemical]] additives that are mixed in with [[natural gas]] during the odorization process to add an artificial smell to the [[gas]]. These odorants are added as a safety precaution, as natural gas in its pure state is completely odourless.</onlyinclude> These chemicals add a characteristic "gas" smell that can be identified at concentrations of just 1%, reducing the risk that leaks will go undetected and gas will accumulate to hazardous levels. Generally, this odorization process occurs before distribution to customers.<ref>Rebecca Busby.''Natural Gas in Nontechnical Language''. Tulsa, OK, USA: PennWell Corporation, 1999.</ref>
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	==Natural Gas Safety==		==Natural Gas Safety==
	Flashlights, not a flame, should be used to investigate minor gas odors. When investigating these leaks, never use matches, candles, or electric switches. Older appliances and water [[heater]]s tend to have a small, continuously burning gas flame known as the pilot light. If this light is out and gas can be smelled, follow manufacturers' instructions on how to relight the pilot light after shutting off the gas at the appliances gas shutoff valve. Before relighting, wait five minutes to allow gas to disperse.<ref name="RE1"/>		Flashlights, not a flame, should be used to investigate minor gas odors. When investigating these leaks, never use matches, candles, or electric switches. Older appliances and water [[heater]]s tend to have a small, continuously burning gas flame known as the [[pilot light]]. If this light is out and gas can be smelled, follow manufacturers' instructions on how to relight the pilot light after shutting off the gas at the appliances gas shutoff valve. Before relighting, wait five minutes to allow gas to disperse.<ref name="RE1"/>

	If a gas smell continues without an obvious source, open [[window]]s and [[door]]s and evacuate the building and contact appropriate authorities.<ref name="RE1">PG&E. (June 15, 2015). ''Gas Odors and Pilot Lights'' [Online]. Available: http://www.pge.com/en/safety/gaselectricsafety/gasodorpilot/index.page</ref>		If a gas smell continues without an obvious source, open [[window]]s and [[door]]s and evacuate the building and contact appropriate authorities.<ref name="RE1">PG&E. (June 15, 2015). ''Gas Odors and Pilot Lights'' [Online]. Available: http://www.pge.com/en/safety/gaselectricsafety/gasodorpilot/index.page</ref>

Jmdonev: 1 revision imported

2018-09-03T22:23:35Z

1 revision imported

← Older revision	Revision as of 22:23, 3 September 2018
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energy>Jmdonev: /* For Further Reading */

2018-08-12T21:29:33Z

For Further Reading

← Older revision		Revision as of 21:29, 12 August 2018
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	[[Category:Done ~~2016~~-04-30]]		[[Category:Done 2018-08-03]]
	[[File:odoront.png\|300px\|thumb\|Figure 1. Gas odorant injection facility.<ref>Wikimedia Commons By: Glen Dillon [Online], Available: https://commons.wikimedia.org/wiki/File:Gas_pipeline_odourant_injection_facility.JPG</ref>]]		[[File:odoront.png\|300px\|thumb\|Figure 1. Gas odorant injection facility.<ref>Wikimedia Commons By: Glen Dillon [Online], Available: https://commons.wikimedia.org/wiki/File:Gas_pipeline_odourant_injection_facility.JPG</ref>]]
	<onlyinclude>'''Odorants''' are [[chemical]] additives that are mixed in with [[natural gas]] during the odorization process to add an artificial smell to the [[gas]]. These odorants are added as a safety precaution, as natural gas in its pure state is completely odourless.</onlyinclude> These chemicals add a characteristic "gas" smell that can be identified at concentrations of just 1%, reducing the risk that leaks will go undetected and gas will accumulate to hazardous levels. Generally, this odorization process occurs before distribution to customers.<ref>Rebecca Busby.''Natural Gas in Nontechnical Language''. Tulsa, OK, USA: PennWell Corporation, 1999.</ref>		<onlyinclude>'''Odorants''' are [[chemical]] additives that are mixed in with [[natural gas]] during the odorization process to add an artificial smell to the [[gas]]. These odorants are added as a safety precaution, as natural gas in its pure state is completely odourless.</onlyinclude> These chemicals add a characteristic "gas" smell that can be identified at concentrations of just 1%, reducing the risk that leaks will go undetected and gas will accumulate to hazardous levels. Generally, this odorization process occurs before distribution to customers.<ref>Rebecca Busby.''Natural Gas in Nontechnical Language''. Tulsa, OK, USA: PennWell Corporation, 1999.</ref>
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	If a gas smell continues without an obvious source, open [[window]]s and [[door]]s and evacuate the building and contact appropriate authorities.<ref name="RE1">PG&E. (June 15, 2015). ''Gas Odors and Pilot Lights'' [Online]. Available: http://www.pge.com/en/safety/gaselectricsafety/gasodorpilot/index.page</ref>		If a gas smell continues without an obvious source, open [[window]]s and [[door]]s and evacuate the building and contact appropriate authorities.<ref name="RE1">PG&E. (June 15, 2015). ''Gas Odors and Pilot Lights'' [Online]. Available: http://www.pge.com/en/safety/gaselectricsafety/gasodorpilot/index.page</ref>

			==For Further Reading==
			*[[Mercaptan]]
			*[[Natural gas]]
			*[[Mercury]]
			*[[Gas]]
			*[[Concentration in parts per]]
			*[[Pollution vs waste]]
			*Or explore a [[Special:Random\|random page]]

	==References==		==References==
	{{reflist}}		{{reflist}}
	[[Category:Uploaded]]		[[Category:Uploaded]]

Jmdonev: 1 revision imported: From the summer

2016-09-17T22:29:20Z

1 revision imported: From the summer

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Jmdonev at 23:53, 30 May 2016

2016-05-30T23:53:28Z

← Older revision		Revision as of 23:53, 30 May 2016
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	[[Category:Done ~~2015~~-07-01]]		[[Category:Done 2016-04-30]]
			[[File:odoront.png\|300px\|thumb\|Figure 1. Gas odorant injection facility.<ref>Wikimedia Commons By: Glen Dillon [Online], Available: https://commons.wikimedia.org/wiki/File:Gas_pipeline_odourant_injection_facility.JPG</ref>]]
	<onlyinclude>'''Odorants''' are [[chemical]] additives that are mixed in with [[natural gas]] during the odorization process to add an artificial smell to the [[gas]]. These odorants are added as a safety precaution, as natural gas in its pure state is completely odourless.</onlyinclude> These chemicals add a characteristic "gas" smell that can be identified at concentrations of just 1%, reducing the risk that leaks will go undetected and gas will accumulate to hazardous levels. Generally, this odorization process occurs before distribution to customers.<ref>Rebecca Busby.''Natural Gas in Nontechnical Language''. Tulsa, OK, USA: PennWell Corporation, 1999.</ref>		<onlyinclude>'''Odorants''' are [[chemical]] additives that are mixed in with [[natural gas]] during the odorization process to add an artificial smell to the [[gas]]. These odorants are added as a safety precaution, as natural gas in its pure state is completely odourless.</onlyinclude> These chemicals add a characteristic "gas" smell that can be identified at concentrations of just 1%, reducing the risk that leaks will go undetected and gas will accumulate to hazardous levels. Generally, this odorization process occurs before distribution to customers.<ref>Rebecca Busby.''Natural Gas in Nontechnical Language''. Tulsa, OK, USA: PennWell Corporation, 1999.</ref>

	==Types of Odorants==		==Types of Odorants==
	Since natural gas is odorless and ~~colorless~~, odorants are added that are deliberately distinctive and unpleasant so that the presence of gas in [[air]] is detectable. Odorants do not change any physical or chemical properties of the gas besides adding a smell. The odorization of natural gas is performed with a blend of synthetic chemicals that generally have a low molecular weight.		Since natural gas is odorless and colourless, odorants are added that are deliberately distinctive and unpleasant so that the presence of gas in [[air]] is detectable. Odorants do not change any physical or chemical properties of the gas besides adding a smell. The odorization of natural gas is performed with a blend of synthetic chemicals that generally have a low molecular weight.

	There are two main groups of odorants - '''[[sulfur]]-based''' odorants including [[mercaptan]]s and sulfides and '''sulfur-free''' odorants. The second type of odorant has been developed more recently and hold potential as there are zero [[SOx\|sulfur dioxide]] [[emission]]s after gas [[combustion]]. Odorants must meet all requirements to be used, including having a strong odor that is detectable as long as a leak exists, they must not produce toxic products, they must be chemically stable and cannot react with rust or piping material.		There are two main groups of odorants - '''[[sulfur]]-based''' odorants including [[mercaptan]]s and sulfides and '''sulfur-free''' odorants. The second type of odorant has been developed more recently and hold potential as there are zero [[SOx\|sulfur dioxide]] [[emission]]s after gas [[combustion]]. Odorants must meet all requirements to be used, including having a strong odor that is detectable as long as a leak exists, they must not produce toxic products, they must be chemically stable and cannot react with [[oxidize\|rust]] or piping material.

	There are numerous different types of odorants that can be injected into the natural gas, and they all have varying physical and chemical properties that are better suited to certain environments. Small things such as the composition of the soil that the gas distribution [[pipeline]] runs through can help determine which odorant is best for the job. Odorants include tetrahydrothiophene, dimethyl sulfide, diethyl sulfide (which is very stable but not suited for use in odorant blends), methylethyl sulfide, ethyl mercaptan, propyl mercaptan, and butyl mercaptan. These are just a few of the different types, and although they are chemically complex they all serve the main purpose of adding a detectable smell to natural gas.<ref name="RE3">T.Hlincik, O.Prokes, and D.Tenkrat. (June 15, 2015). ''Natural gas odorization'' [Online]. Available: http://cdn.intechopen.com/pdfs/11460.pdf </ref>		There are numerous different types of odorants that can be injected into the natural gas, and they all have varying physical and chemical properties that are better suited to certain environments. Small things such as the composition of the soil that the gas distribution [[pipeline]] runs through can help determine which odorant is best for the job. Odorants include tetrahydrothiophene, dimethyl sulfide, diethyl sulfide (which is very stable but not suited for use in odorant blends), methylethyl sulfide, ethyl mercaptan, propyl mercaptan, and butyl mercaptan. These are just a few of the different types, and although they are chemically complex they all serve the main purpose of adding a detectable smell to natural gas.<ref name="RE3">T.Hlincik, O.Prokes, and D.Tenkrat. (June 15, 2015). ''Natural gas odorization'' [Online]. Available: http://cdn.intechopen.com/pdfs/11460.pdf </ref>

J.williams: 1 revision imported

2015-08-26T21:31:27Z

1 revision imported

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J.williams at 16:57, 12 August 2015

2015-08-12T16:57:13Z

New page

[[Category:Done 2015-07-01]]
<onlyinclude>'''Odorants''' are [[chemical]] additives that are mixed in with [[natural gas]] during the odorization process to add an artificial smell to the [[gas]]. These odorants are added as a safety precaution, as natural gas in its pure state is completely odourless.</onlyinclude> These chemicals add a characteristic "gas" smell that can be identified at concentrations of just 1%, reducing the risk that leaks will go undetected and gas will accumulate to hazardous levels. Generally, this odorization process occurs before distribution to customers.<ref>Rebecca Busby.''Natural Gas in Nontechnical Language''. Tulsa, OK, USA: PennWell Corporation, 1999.</ref>

==Types of Odorants==
Since natural gas is odorless and colorless, odorants are added that are deliberately distinctive and unpleasant so that the presence of gas in [[air]] is detectable. Odorants do not change any physical or chemical properties of the gas besides adding a smell. The odorization of natural gas is performed with a blend of synthetic chemicals that generally have a low molecular weight.

There are two main groups of odorants - '''[[sulfur]]-based''' odorants including [[mercaptan]]s and sulfides and '''sulfur-free''' odorants. The second type of odorant has been developed more recently and hold potential as there are zero [[SOx|sulfur dioxide]] [[emission]]s after gas [[combustion]]. Odorants must meet all requirements to be used, including having a strong odor that is detectable as long as a leak exists, they must not produce toxic products, they must be chemically stable and cannot react with rust or piping material.

There are numerous different types of odorants that can be injected into the natural gas, and they all have varying physical and chemical properties that are better suited to certain environments. Small things such as the composition of the soil that the gas distribution [[pipeline]] runs through can help determine which odorant is best for the job. Odorants include tetrahydrothiophene, dimethyl sulfide, diethyl sulfide (which is very stable but not suited for use in odorant blends), methylethyl sulfide, ethyl mercaptan, propyl mercaptan, and butyl mercaptan. These are just a few of the different types, and although they are chemically complex they all serve the main purpose of adding a detectable smell to natural gas.<ref name="RE3">T.Hlincik, O.Prokes, and D.Tenkrat. (June 15, 2015). ''Natural gas odorization'' [Online]. Available: http://cdn.intechopen.com/pdfs/11460.pdf </ref>

==Natural Gas Safety==
Flashlights, not a flame, should be used to investigate minor gas odors. When investigating these leaks, never use matches, candles, or electric switches. Older appliances and water [[heater]]s tend to have a small, continuously burning gas flame known as the pilot light. If this light is out and gas can be smelled, follow manufacturers' instructions on how to relight the pilot light after shutting off the gas at the appliances gas shutoff valve. Before relighting, wait five minutes to allow gas to disperse.<ref name="RE1"/>

If a gas smell continues without an obvious source, open [[window]]s and [[door]]s and evacuate the building and contact appropriate authorities.<ref name="RE1">PG&E. (June 15, 2015). ''Gas Odors and Pilot Lights'' [Online]. Available: http://www.pge.com/en/safety/gaselectricsafety/gasodorpilot/index.page</ref>

==References==
{{reflist}}
[[Category:Uploaded]]