Re: Fluid for big dipping bird?


"Ian Gay" <gay@xxxxxxx> wrote in message
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"Marcus Fox" <please-reply-via-newsgroup-th@xxxxxxxxxxxxxxxx> wrote
in news:6Iadndn2wt7GtUnbnZ2dnUVZ8s6gnZ2d@xxxxxx:


"sensible" <flantoons@xxxxxxxxxxxxxx> wrote in message
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Hello,

Do you know where I can buy a gallon of Methylene Chloride
please?

I am in North Hampshire, near Basingstoke .UK

I want to make one of those dipping birds....a big version....Is
Methylene Chloride the best chemical to use on a big version, or
is there a better fluid I can use?

Many thanks,

A more efficient liquid would be mercury,

The room temp. vapour pressure is a bit low! I wonder if of pentane
would work? (It's flammable!) Are you really sure you want to do this
on a gallon scale? Seems dangerous to me.

Well, you want a dense liquid with a low latent heat of vaporisation - with
methylene chloride at 406 kJ/kg and mercury at 281 kJ/kg, pentane is 363
kJ/kg. Could also use one of the commercial refrigerants such as Freon R-11,
which is probably better than methylene chloride.

Marcus


.

Relevant Pages

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  • Re: Fluid for big dipping bird?
    ... Do you know where I can buy a gallon of Methylene Chloride ... I am in North Hampshire, near Basingstoke .UK ...
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  • Re: Fluid for big dipping bird?
    ... Do you know where I can buy a gallon of Methylene Chloride please? ... I am in North Hampshire, near Basingstoke .UK ...
    (sci.chem)
  • Fluid for big dipping bird?
    ... Do you know where I can buy a gallon of Methylene Chloride please? ... I am in North Hampshire, near Basingstoke .UK ...
    (sci.chem)
  • Re: Fluid for big dipping bird?
    ... vaporisation - with methylene chloride at 406 kJ/kg and mercury ... at 281 kJ/kg, pentane is 363 kJ/kg. ... commercial refrigerants such as Freon R-11, ... Butane vapour pressure is ~5 atm at r.t. ...
    (sci.chem)