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  • Users: dwalter68
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  1. dwalter68

    Properties of alcohol mixtures.

    Hello- I need some expertise about what properties result when different alcohols are mixed in liquid form. I particularly need to know what vapor pressure will result from a mixture of 1-octanol (vp of 0.1 mmHg @20C) and 1-propanol (vp of 15 mmHg @20C). If I mix them will get a vp that is...
  2. dwalter68

    Need source for permeability values for Viton

    Hello- Does anyone know a good source for gas permeability values for viton (a trade name for a fluoroelastomer material)? I can find information for common gases like nitrogen, oxygen, etc. I need it for methyl salicylate, 1-octanol, ethylene glycol, and dimp (diisopropyl methylphosphonate)...
  3. dwalter68

    Membrane to cover vial and allow alcohol vapor to pass

    I am working outside my area of expertise and need help selecting a membrane to meet the following criteria: -To be used as a septa for a small autosampler vial. The vial will be used as a test device for a chemical sensor. -The vial will hold a liquid sample of 1-propanol or 1-octanol at room...
  4. dwalter68

    How to calc. amount of liquid going to vapor in closed container

    I am sure this is a simple question for someone with chemical background. I need to make sure I have solved this problem correctly. I take an open container and fill it partially with ethanol. Then I seal it up and assume no leaks. Note that the container is not evacuated of air beforehand and...

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