fishbait
Harmless
Posts: 2
Registered: 3-5-2006
Member Is Offline
Mood: No Mood
|
|
Precise B.P. of Ethanol
The CRC Handbook of Chem & Phys. gives a value of 78.5 degrees C. for the b.p. of ethanol at atmospheric press.
I would like to know to how many significant figures the value for ethanol has been determined experimentally. Where can I find the reference for:P
this work?
|
|
|
solo
International Hazard
Posts: 3975
Registered: 9-12-2002
Location: Estados Unidos de La Republica Mexicana
Member Is Offline
Mood: ....getting old and drowning in a sea of knowledge
|
|
Boiling Point 78.2 deg C EXP
source,
http://chem2.sis.nlm.nih.gov/chemidplus/jsp/common/ChemFull....
It's better to die on your feet, than live on your knees....Emiliano Zapata.
|
|
|
jack-sparrow
Hazard to Others
Posts: 130
Registered: 30-11-2005
Location: Ask Big Brother
Member Is Offline
Mood: ahoy!
|
|
Boiling point varies with the atmospheric pressure. It will not be the same at 99 kPa or at 102 kPa. The purity of ethanol is an important factor
too. It has to be anhydrous and free of other 'denaturant' like toluene. The calibration of your thermometer is also important so you can mesure the
'decimals' accurately.
|
|
|
fishbait
Harmless
Posts: 2
Registered: 3-5-2006
Member Is Offline
Mood: No Mood
|
|
Experimental b.p. for Abs. Ethanol
Some time back (about two weeks) I posted a query asking about the b.p. of ethanol, but in that post I am afraid I assumed too much. Here is a more
accurate statement of my query:
What is the best value ever published on the precise boiling point of asbsolute ethanol under standard conditions at 760 torr.
As a little background--I understand this work was carried out in the mid 1930's by the thermochemistry laboratory of the old National Bureau of
Standards in Washing ton,D.C. As I recall they reported an experimental value for the b.p. at that time with over five significant figures.
Does anyone have a record of that work, or can point me in the direction to find it?
|
|
|
unionised
International Hazard
Posts: 5126
Registered: 1-11-2003
Location: UK
Member Is Offline
Mood: No Mood
|
|
Why the new thread?
Anyway, you might do better asking the NBS rather than posting here. Do you have any particular need for the data or are you just interested?
|
|
|
Texium
|
Thread Moved
19-11-2023 at 11:08 |
Texium
|
Threads Merged
19-11-2023 at 11:10 |
![[*]](images/xpblue/default_icon.gif){kind=icon}
