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    From [email protected]@21:1/5 to All on Sat Oct 7 20:27:25 2017
    When did mothballs become napthalene?
    When this movie was made, i.e. when I was a kid, what we called ‘mothballs’ was formaldehyde in some sort of plasticizer / solidifier that ‘melted’ over time ... I’m guessing a sublimation of the volatile bits, with the only residual being the
    horrific smell left on the wool clothing, but it was the only reliable way to keep moths from eating up your winter wardrobe so people just dealt with smelling as though they’d just come from the morgue.

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  • From Peter Fairbrother@21:1/5 to [email protected] on Sun Oct 8 14:13:21 2017
    On 08/10/17 04:27, [email protected] wrote:
    When did mothballs become napthalene?
    When this movie was made, i.e. when I was a kid, what we called ‘mothballs’ was formaldehyde in some sort of plasticizer / solidifier that ‘melted’ over time ... I’m guessing a sublimation of the volatile bits, with the only residual being
    the horrific smell left on the wool clothing, but it was the only reliable way to keep moths from eating up your winter wardrobe so people just dealt with smelling as though they’d just come from the morgue.


    Mothballs were never made from formaldehyde. They used to be napthalene (sometimes with camphor), which smells a bit like formaldehyde. Later
    some used dinitrobenzene; but not for much longer.

    Napthalene mothballs have been banned in the EU for about 10 years, dinitrobenzene is likely to be banned soon.

    Modern mothballs contain things with lots of numbers in their very long
    names, like 2,3,4,5-tetraflourobenzyl trans-2-(2,2-dichlorovinyl)3,3-dimethylcyclopropanecarboxylate (yes,
    really a thing in mothballs) which no-one has gotten round to banning,
    or even properly investigating, yet.


    -- Peter Fairbrother

    --- SoupGate-Win32 v1.05
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  • From Thomas Prufer@21:1/5 to Peter Fairbrother on Sun Oct 8 16:02:00 2017
    On Sun, 8 Oct 2017 14:13:21 +0100, Peter Fairbrother <[email protected]> wrote:

    Mothballs were never made from formaldehyde. They used to be napthalene >(sometimes with camphor), which smells a bit like formaldehyde. Later
    some used dinitrobenzene; but not for much longer.

    Napthalene mothballs have been banned in the EU for about 10 years, >dinitrobenzene is likely to be banned soon.

    Not a second too soon -- I had a wood "camphor" chest and some wool blankets rendered unusable by the stench of naphthalene.

    ISTR seeing a mothball attachment for a vacuum cleaner: a lot (a pound? half apound?) of mothballs would be put in a container, attached to the vacuum cleaner, and the cleaner placed in a closet with the moth-ridded fabric. You tape up the cracks around the door, plug the electric cord in, and the vacuum recirculated the air through the mothballs, vaporizing the lot in (ISTR) an hour
    or three. This would kill the moths.

    The smell of a pound of naphthalene vaporized must have been remarkable...


    Thomas Prufer

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  • From Peter Fairbrother@21:1/5 to Peter Fairbrother on Sun Oct 8 14:26:52 2017
    On 08/10/17 14:13, Peter Fairbrother wrote:
    On 08/10/17 04:27, [email protected] wrote:
    When did mothballs become napthalene?
    When this movie was made, i.e. when I was a kid, what we called
    ‘mothballs’ was formaldehyde in some sort of plasticizer / solidifier
    that ‘melted’ over time ... I’m guessing a sublimation of the volatile >> bits, with the only residual being the horrific smell left on the wool
    clothing, but it was the only reliable way to keep moths from eating
    up your winter wardrobe so people just dealt with smelling as though
    they’d just come from the morgue.


    Mothballs were never made from formaldehyde. They used to be napthalene (sometimes with camphor), which smells a bit like formaldehyde. Later
    some used dinitrobenzene

    ooops - p-dichlorobenzene, not dinitrobenzene. Sorry.


    ; but not for much longer.

    Napthalene mothballs have been banned in the EU for about 10 years, dinitrobenzene is likely to be banned soon.

    Modern mothballs contain things with lots of numbers in their very long names, like 2,3,4,5-tetraflourobenzyl trans-2-(2,2-dichlorovinyl)3,3-dimethylcyclopropanecarboxylate (yes,
    really a thing in mothballs) which no-one has gotten round to banning,
    or even properly investigating, yet.


    -- Peter Fairbrother

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)