Any examples of liquids volatile at room temp but non-flammable?Can I make a container of (kind of) perpetually boiling water?Calculating Boiling Point of solutionIs it true that an evaporating molecule has the same kinetic energy as a molecule in a pot of boiling water?
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Any examples of liquids volatile at room temp but non-flammable?
Can I make a container of (kind of) perpetually boiling water?Calculating Boiling Point of solutionIs it true that an evaporating molecule has the same kinetic energy as a molecule in a pot of boiling water?
$begingroup$
I'm thinking of something similar to the liquid used in the classic dipping birds. Temperature differential in two "bulbs" at each end of a tube should cause vapor to expand and push liquid to the top, shifting the weight and tipping it. The closer to room temperature the boiling point is, the better. Thanks.
boiling-point
asked May 3 at 14:47
Devon HansenDevon Hansen
193
New contributor
Devon Hansen is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
|
show 1 more comment
$begingroup$
I'm thinking of something similar to the liquid used in the classic dipping birds. Temperature differential in two "bulbs" at each end of a tube should cause vapor to expand and push liquid to the top, shifting the weight and tipping it. The closer to room temperature the boiling point is, the better. Thanks.
boiling-point
asked May 3 at 14:47
Devon HansenDevon Hansen
193
New contributor
Devon Hansen is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
4
$begingroup$
Dichloromethane
$endgroup$
– MaxW
May 3 at 14:56
$begingroup$
Dichloromethane is a carcinogen and liver toxin (if this is for schools). If you want to be green, try "A dunking bird of the second kind". It just uses water and patience. Published in American Journal of Physics: aapt.scitation.org/doi/10.1119/1.1703543
$endgroup$
– M. Farooq
May 3 at 15:10
$begingroup$
@M.Farooq It's suspected to be carcenogenic. And not very badly, because with its widespread use, one would know, otherwise.
$endgroup$
– Karl
May 3 at 19:11
$begingroup$
Benzene is present in fuels, and it is a known human carcinogen. Widespread use does not guarantee safety (standards change all the time). If you talk to an old timer, they always say that they used benzene freely in labs. Not anymore. Organic chemists use DCM all the time and work with worse substances. Still they live very long or sometimes quite short. I would avoid volatile halogenated materials in general because they are quite bad for the liver even if they are suspected carcinogens.
$endgroup$
– M. Farooq
May 3 at 21:52
$begingroup$
Dichloromethane is surely toxic. While it can be acceptable for our columns I would not use it for demonstration aimed to general audience nor in a general class activity.
$endgroup$
– Alchimista
2 days ago
|
show 1 more comment
$begingroup$
I'm thinking of something similar to the liquid used in the classic dipping birds. Temperature differential in two "bulbs" at each end of a tube should cause vapor to expand and push liquid to the top, shifting the weight and tipping it. The closer to room temperature the boiling point is, the better. Thanks.
boiling-point
asked May 3 at 14:47
Devon HansenDevon Hansen
193
New contributor
Devon Hansen is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
I'm thinking of something similar to the liquid used in the classic dipping birds. Temperature differential in two "bulbs" at each end of a tube should cause vapor to expand and push liquid to the top, shifting the weight and tipping it. The closer to room temperature the boiling point is, the better. Thanks.
boiling-point
boiling-point
asked May 3 at 14:47
Devon HansenDevon Hansen
193
New contributor
Devon Hansen is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked May 3 at 14:47
Devon HansenDevon Hansen
193
New contributor
Devon Hansen is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked May 3 at 14:47
Devon HansenDevon Hansen
193
New contributor
Devon Hansen is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked May 3 at 14:47
Devon HansenDevon Hansen
193
asked May 3 at 14:47
Devon HansenDevon Hansen
193
193
New contributor
Devon Hansen is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Devon Hansen is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
4
$begingroup$
Dichloromethane
$endgroup$
– MaxW
May 3 at 14:56
$begingroup$
Dichloromethane is a carcinogen and liver toxin (if this is for schools). If you want to be green, try "A dunking bird of the second kind". It just uses water and patience. Published in American Journal of Physics: aapt.scitation.org/doi/10.1119/1.1703543
$endgroup$
– M. Farooq
May 3 at 15:10
$begingroup$
@M.Farooq It's suspected to be carcenogenic. And not very badly, because with its widespread use, one would know, otherwise.
$endgroup$
– Karl
May 3 at 19:11
$begingroup$
Benzene is present in fuels, and it is a known human carcinogen. Widespread use does not guarantee safety (standards change all the time). If you talk to an old timer, they always say that they used benzene freely in labs. Not anymore. Organic chemists use DCM all the time and work with worse substances. Still they live very long or sometimes quite short. I would avoid volatile halogenated materials in general because they are quite bad for the liver even if they are suspected carcinogens.
$endgroup$
– M. Farooq
May 3 at 21:52
$begingroup$
Dichloromethane is surely toxic. While it can be acceptable for our columns I would not use it for demonstration aimed to general audience nor in a general class activity.
$endgroup$
– Alchimista
2 days ago
|
show 1 more comment
4
$begingroup$
Dichloromethane
$endgroup$
– MaxW
May 3 at 14:56
$begingroup$
Dichloromethane is a carcinogen and liver toxin (if this is for schools). If you want to be green, try "A dunking bird of the second kind". It just uses water and patience. Published in American Journal of Physics: aapt.scitation.org/doi/10.1119/1.1703543
$endgroup$
– M. Farooq
May 3 at 15:10
$begingroup$
@M.Farooq It's suspected to be carcenogenic. And not very badly, because with its widespread use, one would know, otherwise.
$endgroup$
– Karl
May 3 at 19:11
$begingroup$
Benzene is present in fuels, and it is a known human carcinogen. Widespread use does not guarantee safety (standards change all the time). If you talk to an old timer, they always say that they used benzene freely in labs. Not anymore. Organic chemists use DCM all the time and work with worse substances. Still they live very long or sometimes quite short. I would avoid volatile halogenated materials in general because they are quite bad for the liver even if they are suspected carcinogens.
$endgroup$
– M. Farooq
May 3 at 21:52
$begingroup$
Dichloromethane is surely toxic. While it can be acceptable for our columns I would not use it for demonstration aimed to general audience nor in a general class activity.
$endgroup$
– Alchimista
2 days ago
4
4
$begingroup$
Dichloromethane
$endgroup$
– MaxW
May 3 at 14:56
$begingroup$
Dichloromethane
$endgroup$
– MaxW
May 3 at 14:56
$begingroup$
Dichloromethane is a carcinogen and liver toxin (if this is for schools). If you want to be green, try "A dunking bird of the second kind". It just uses water and patience. Published in American Journal of Physics: aapt.scitation.org/doi/10.1119/1.1703543
$endgroup$
– M. Farooq
May 3 at 15:10
$begingroup$
Dichloromethane is a carcinogen and liver toxin (if this is for schools). If you want to be green, try "A dunking bird of the second kind". It just uses water and patience. Published in American Journal of Physics: aapt.scitation.org/doi/10.1119/1.1703543
$endgroup$
– M. Farooq
May 3 at 15:10
$begingroup$
@M.Farooq It's suspected to be carcenogenic. And not very badly, because with its widespread use, one would know, otherwise.
$endgroup$
– Karl
May 3 at 19:11
$begingroup$
@M.Farooq It's suspected to be carcenogenic. And not very badly, because with its widespread use, one would know, otherwise.
$endgroup$
– Karl
May 3 at 19:11
$begingroup$
Benzene is present in fuels, and it is a known human carcinogen. Widespread use does not guarantee safety (standards change all the time). If you talk to an old timer, they always say that they used benzene freely in labs. Not anymore. Organic chemists use DCM all the time and work with worse substances. Still they live very long or sometimes quite short. I would avoid volatile halogenated materials in general because they are quite bad for the liver even if they are suspected carcinogens.
$endgroup$
– M. Farooq
May 3 at 21:52
$begingroup$
Benzene is present in fuels, and it is a known human carcinogen. Widespread use does not guarantee safety (standards change all the time). If you talk to an old timer, they always say that they used benzene freely in labs. Not anymore. Organic chemists use DCM all the time and work with worse substances. Still they live very long or sometimes quite short. I would avoid volatile halogenated materials in general because they are quite bad for the liver even if they are suspected carcinogens.
$endgroup$
– M. Farooq
May 3 at 21:52
$begingroup$
Dichloromethane is surely toxic. While it can be acceptable for our columns I would not use it for demonstration aimed to general audience nor in a general class activity.
$endgroup$
– Alchimista
2 days ago
$begingroup$
Dichloromethane is surely toxic. While it can be acceptable for our columns I would not use it for demonstration aimed to general audience nor in a general class activity.
$endgroup$
– Alchimista
2 days ago
|
show 1 more comment
1 Answer
1
active
oldest
votes
$begingroup$
Yes, there are lots. Start with Wikipedia's list of refrigerants; while it doesn't call out flammability, any fully-halogenated compounds will be effectively non-flammable. Trichlorofluoromethane has a standard boiling point just above standard room temperature.
You didn't say anything about pressure in your question. If you don't mind pressures higher than one standard atmosphere, and don't mind toxicity, candidates like ammonia, sulfur dioxide, and chlorine come into play. If you don't mind low pressure, you could even use water, although it might freeze as it boils off.
answered May 3 at 15:31
jeffBjeffB
3667
$endgroup$
$begingroup$
Don't forget bromine
$endgroup$
– A.K.
May 3 at 19:18
$begingroup$
@A.K. He's the rugged guy in Lord of the Rings who gets shot up with arrows, right?
$endgroup$
– David Richerby
May 3 at 22:59
$begingroup$
I suppose the higher the pressure the faster the whole sequence would progress, so lets says as high a pressure as is reasonable.
$endgroup$
– Devon Hansen
2 days ago
$begingroup$
Can you tell us more about your safety constraints (flammability, pressure limits)? HFC-134a (1,1,1,2-Tetrafluoroethane) has a room-temperature vapor pressure between 4 and 5 atmospheres, maybe 25%-60% higher than the pressure in a full two-liter soda bottle.
$endgroup$
– jeffB
yesterday
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
Yes, there are lots. Start with Wikipedia's list of refrigerants; while it doesn't call out flammability, any fully-halogenated compounds will be effectively non-flammable. Trichlorofluoromethane has a standard boiling point just above standard room temperature.
You didn't say anything about pressure in your question. If you don't mind pressures higher than one standard atmosphere, and don't mind toxicity, candidates like ammonia, sulfur dioxide, and chlorine come into play. If you don't mind low pressure, you could even use water, although it might freeze as it boils off.
answered May 3 at 15:31
jeffBjeffB
3667
$endgroup$
$begingroup$
Don't forget bromine
$endgroup$
– A.K.
May 3 at 19:18
$begingroup$
@A.K. He's the rugged guy in Lord of the Rings who gets shot up with arrows, right?
$endgroup$
– David Richerby
May 3 at 22:59
$begingroup$
I suppose the higher the pressure the faster the whole sequence would progress, so lets says as high a pressure as is reasonable.
$endgroup$
– Devon Hansen
2 days ago
$begingroup$
Can you tell us more about your safety constraints (flammability, pressure limits)? HFC-134a (1,1,1,2-Tetrafluoroethane) has a room-temperature vapor pressure between 4 and 5 atmospheres, maybe 25%-60% higher than the pressure in a full two-liter soda bottle.
$endgroup$
– jeffB
yesterday
add a comment |
$begingroup$
Yes, there are lots. Start with Wikipedia's list of refrigerants; while it doesn't call out flammability, any fully-halogenated compounds will be effectively non-flammable. Trichlorofluoromethane has a standard boiling point just above standard room temperature.
You didn't say anything about pressure in your question. If you don't mind pressures higher than one standard atmosphere, and don't mind toxicity, candidates like ammonia, sulfur dioxide, and chlorine come into play. If you don't mind low pressure, you could even use water, although it might freeze as it boils off.
answered May 3 at 15:31
jeffBjeffB
3667
$endgroup$
$begingroup$
Don't forget bromine
$endgroup$
– A.K.
May 3 at 19:18
$begingroup$
@A.K. He's the rugged guy in Lord of the Rings who gets shot up with arrows, right?
$endgroup$
– David Richerby
May 3 at 22:59
$begingroup$
I suppose the higher the pressure the faster the whole sequence would progress, so lets says as high a pressure as is reasonable.
$endgroup$
– Devon Hansen
2 days ago
$begingroup$
Can you tell us more about your safety constraints (flammability, pressure limits)? HFC-134a (1,1,1,2-Tetrafluoroethane) has a room-temperature vapor pressure between 4 and 5 atmospheres, maybe 25%-60% higher than the pressure in a full two-liter soda bottle.
$endgroup$
– jeffB
yesterday
add a comment |
$begingroup$
Yes, there are lots. Start with Wikipedia's list of refrigerants; while it doesn't call out flammability, any fully-halogenated compounds will be effectively non-flammable. Trichlorofluoromethane has a standard boiling point just above standard room temperature.
You didn't say anything about pressure in your question. If you don't mind pressures higher than one standard atmosphere, and don't mind toxicity, candidates like ammonia, sulfur dioxide, and chlorine come into play. If you don't mind low pressure, you could even use water, although it might freeze as it boils off.
answered May 3 at 15:31
jeffBjeffB
3667
$endgroup$
Yes, there are lots. Start with Wikipedia's list of refrigerants; while it doesn't call out flammability, any fully-halogenated compounds will be effectively non-flammable. Trichlorofluoromethane has a standard boiling point just above standard room temperature.
You didn't say anything about pressure in your question. If you don't mind pressures higher than one standard atmosphere, and don't mind toxicity, candidates like ammonia, sulfur dioxide, and chlorine come into play. If you don't mind low pressure, you could even use water, although it might freeze as it boils off.
answered May 3 at 15:31
jeffBjeffB
3667
answered May 3 at 15:31
jeffBjeffB
3667
answered May 3 at 15:31
jeffBjeffB
3667
answered May 3 at 15:31
jeffBjeffB
3667
3667
$begingroup$
Don't forget bromine
$endgroup$
– A.K.
May 3 at 19:18
$begingroup$
@A.K. He's the rugged guy in Lord of the Rings who gets shot up with arrows, right?
$endgroup$
– David Richerby
May 3 at 22:59
$begingroup$
I suppose the higher the pressure the faster the whole sequence would progress, so lets says as high a pressure as is reasonable.
$endgroup$
– Devon Hansen
2 days ago
$begingroup$
Can you tell us more about your safety constraints (flammability, pressure limits)? HFC-134a (1,1,1,2-Tetrafluoroethane) has a room-temperature vapor pressure between 4 and 5 atmospheres, maybe 25%-60% higher than the pressure in a full two-liter soda bottle.
$endgroup$
– jeffB
yesterday
add a comment |
$begingroup$
Don't forget bromine
$endgroup$
– A.K.
May 3 at 19:18
$begingroup$
@A.K. He's the rugged guy in Lord of the Rings who gets shot up with arrows, right?
$endgroup$
– David Richerby
May 3 at 22:59
$begingroup$
I suppose the higher the pressure the faster the whole sequence would progress, so lets says as high a pressure as is reasonable.
$endgroup$
– Devon Hansen
2 days ago
$begingroup$
Can you tell us more about your safety constraints (flammability, pressure limits)? HFC-134a (1,1,1,2-Tetrafluoroethane) has a room-temperature vapor pressure between 4 and 5 atmospheres, maybe 25%-60% higher than the pressure in a full two-liter soda bottle.
$endgroup$
– jeffB
yesterday
$begingroup$
Don't forget bromine
$endgroup$
– A.K.
May 3 at 19:18
$begingroup$
Don't forget bromine
$endgroup$
– A.K.
May 3 at 19:18
$begingroup$
@A.K. He's the rugged guy in Lord of the Rings who gets shot up with arrows, right?
$endgroup$
– David Richerby
May 3 at 22:59
$begingroup$
@A.K. He's the rugged guy in Lord of the Rings who gets shot up with arrows, right?
$endgroup$
– David Richerby
May 3 at 22:59
$begingroup$
I suppose the higher the pressure the faster the whole sequence would progress, so lets says as high a pressure as is reasonable.
$endgroup$
– Devon Hansen
2 days ago
$begingroup$
I suppose the higher the pressure the faster the whole sequence would progress, so lets says as high a pressure as is reasonable.
$endgroup$
– Devon Hansen
2 days ago
$begingroup$
Can you tell us more about your safety constraints (flammability, pressure limits)? HFC-134a (1,1,1,2-Tetrafluoroethane) has a room-temperature vapor pressure between 4 and 5 atmospheres, maybe 25%-60% higher than the pressure in a full two-liter soda bottle.
$endgroup$
– jeffB
yesterday
$begingroup$
Can you tell us more about your safety constraints (flammability, pressure limits)? HFC-134a (1,1,1,2-Tetrafluoroethane) has a room-temperature vapor pressure between 4 and 5 atmospheres, maybe 25%-60% higher than the pressure in a full two-liter soda bottle.
$endgroup$
– jeffB
yesterday
add a comment |
Devon Hansen is a new contributor. Be nice, and check out our Code of Conduct.
Devon Hansen is a new contributor. Be nice, and check out our Code of Conduct.
Devon Hansen is a new contributor. Be nice, and check out our Code of Conduct.
Devon Hansen is a new contributor. Be nice, and check out our Code of Conduct.
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4
$begingroup$
Dichloromethane
$endgroup$
– MaxW
May 3 at 14:56
$begingroup$
Dichloromethane is a carcinogen and liver toxin (if this is for schools). If you want to be green, try "A dunking bird of the second kind". It just uses water and patience. Published in American Journal of Physics: aapt.scitation.org/doi/10.1119/1.1703543
$endgroup$
– M. Farooq
May 3 at 15:10
$begingroup$
@M.Farooq It's suspected to be carcenogenic. And not very badly, because with its widespread use, one would know, otherwise.
$endgroup$
– Karl
May 3 at 19:11
$begingroup$
Benzene is present in fuels, and it is a known human carcinogen. Widespread use does not guarantee safety (standards change all the time). If you talk to an old timer, they always say that they used benzene freely in labs. Not anymore. Organic chemists use DCM all the time and work with worse substances. Still they live very long or sometimes quite short. I would avoid volatile halogenated materials in general because they are quite bad for the liver even if they are suspected carcinogens.
$endgroup$
– M. Farooq
May 3 at 21:52
$begingroup$
Dichloromethane is surely toxic. While it can be acceptable for our columns I would not use it for demonstration aimed to general audience nor in a general class activity.
$endgroup$
– Alchimista
2 days ago