Cohousing-L Mailing List: Re: Fabric-Covered Fiberglass Panels

[Howard Landman (howard]

> Also, what kind
> of formaldehyde is it? (Depending on the kind, it might do most of the
> offgassing in a few months, or keep offgassing for  years to come).

        H
         \
          C = O         Formaldehyde (all atoms lie in a plane)
         /
        H

Formaldehyde is a very small and simple chemical compound CH2O.
There aren't different kinds of formaldehyde molecule - it's its
own mirror image so there aren't even left- and right-handed forms.

The only variants possible would be isotopic (e.g. carbon-13 instead
of carbon-12 or deuterium instead of hydrogen) but that doesn't sound
like what you're asking ... and those would only have a small (a few
percent) effect on outgassing rate anyway (and only because heavier
molecules move more slowly on average).

        Howard A. Landman
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