3787Re: DEET Dissolves Breathable Fabrics: Experimental Results
- Mar 2, 2009Yep, a couple of years ago my bottle of insect repellant, containing
30% DEET, spilled on my Goretex Shell and it melted.
--- In email@example.com, Roleigh Martin <marti124@...>
> very interesting; this is a new RSS feed I subscribed too starting
> today via google reader.
> Sent to you by Roleigh Martin via Google Reader: DEET Dissolves
> Breathable Fabrics: Experimental Results via sectionhiker.com by
> Earlylite on 2/20/09
> Iâm a skeptic by nature and have always questioned authority,
> operating procedures, gut feel, the status quo, and institutionaltest by
> knowledge. In work and at play, I often put these truths to the
> doing experiments or establishing quantifiable metrics thatinvariably
> show that long held beliefs are grossly incorrect.used
> Iâd always heard that DEET dissolves breathable fabrics, such as
> Gore-Tex, and that you should keep the two from coming into contact
> with one other. Iâve never had this problem outdoors when Iâve
> DEET, but I couldnât pass up the opportunity to test whether itis true
> or a myth in a more controlled setting on a pair of breathable rainbreathable
> This winter, I managed to shred a pair of Mountain Hardware Cohesion
> Pants, slashing dozens of rips in the legs with sharp front points,
> while learning to use crampons. Mountain Hardware Cohesion Pants are
> made with Conduit DT, a proprietary Gore-Tex knockoff that has three
> layers: an outer shell layer made from Epic nylon, a middle
> layer made from Conduit DT, and an inner Epic stretch liner. Itried to
> extend the life of these pants with duct tape (see above), butfinally
> donated their remains to science, enabling this experiment.to the
> The Experiment
> I applied three squirts of Benâs 100% DEET and Benâs 30% DEET
> Epic nylon fabric on the outside of the Cohesion pants. After 3days,
> the 100% DEET solution (right in photo) was still quite wet, whilethe
> 30% DEET Solution (left in photo) had mostly dried. There was littleremind
> evidence of any external damage to the pants leg.
> Turning the pant leg inside out however, showed another result
> entirely. The 30% DEET solution had soaked through the outer shell
> layer and melted the middle Conduit DT layer and the inner liner.
> However, the damage was highly localized. [Does the photo below
> you of the Andromeda Strain?]significant,
> The damage under the 100% DEET application was much more
> and large patches of the Conduit DT layer and the inner liner wereof the
> melted away. As it turns out, this process is ongoing and the fabric
> continues to dissolve, unabated.
> The experimental evidence is quite clear and shows that DEET does
> dissolve breathable laminates. Itâs true! However, the strength
> DEET solution that the laminate comes in contact with is adetermining
> factor in the amount of damage that will occur. Therefore, hikerswho
> are concerned about the impact of DEET to clothing made usingpants:
> breathable laminates are advised to dilute the point of contact with
> water to minimize potential damage.
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