Variation of liquid density with temperature

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Discussion Overview

The discussion centers on the variation of liquid density with temperature, specifically focusing on the density of avgas 100LL at lower temperatures. Participants explore the relationship between temperature changes and liquid density, seeking to understand how small these changes might be.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant seeks information on the density of avgas 100LL at lower temperatures, noting a known density at 15°C of 725 kg/m³.
  • Another participant mentions that the variation in density with temperature is not governed by a general physical law and depends on the specific chemistry of the substance.
  • A suggestion is made that detailed tables for avgas may exist, as it is a standard commercial substance.
  • A participant expresses difficulty in finding relevant information through various online sources, including Google and Wikipedia.
  • A link to a specific resource is provided, which one participant finds helpful.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the availability of specific data for avgas density at lower temperatures, and there is a lack of agreement on the generality of density variation principles.

Contextual Notes

The discussion highlights the limitations in finding specific density data for avgas at lower temperatures and the dependence on the chemical properties of the substance.

proinwv
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I am looking for information on the density of a liquid at lower temperatures. I have it at 15C as 725 kg/m^3. The fluid is avgas 100LL.

I wish to determine it at lower temperatures. I believe that the change in liquid densitiess is rather small for temperature changes, but I can't verify this.

Any help is appreciated.
 
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There isn't a general physical law - it depends on the chemistry of the substance.
If avgas is a standard commercial substance (sort of aviation fuel?) then there wil be detailed tables for it.
Have you tried google?
 
Yes I have without any luck, in addition to wikipedia and other sources. I just found this forum and thought that I would give it a try.
 
http://www.tc.gc.ca/CivilAviation/publications/tp14371/RAC/3-0.htm#3-5-2
 
nucleus, thanks for the link. This is what I needed. I appreciate the information.
 

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