[Boatanchors] Fungecide for WW2 radios
Richard Knoppow
1oldlens1 at ix.netcom.com
Fri Dec 20 20:47:53 EST 2013
-----Original Message-----
>From: "J. Forster" <jfor at quikus.com>
>Sent: Dec 20, 2013 4:13 PM
>To: WA5CAB at cs.com
>Cc: boatanchors at qth.net
>Subject: Re: [Boatanchors] Fungecide for WW2 radios
>
>If you Google a bit, this turns up:
>
>MIL-V-173 - there are apparently two formulations. Basically it's a
>phenol-formaldehyde (Bakelite-like) resin and Tung oil.
>
>The solvent for the uncured stuff is:
>
>Name:NAPHTHA, SOLVENT
>CAS:8052-41-3
>RTECS #:WJ8925000
>= Wt:29.
>OSHA PEL:2900 MG/M3;500 PPM
>ACGIH TLV:525 MG/M3;100 PPM
>
>Name:LIGHT AROMATIC SOLVENT NAPHTHA (PETROLEUM)
>CAS:64742-95-6
>RTECS #:WF3400000
>= Wt:20.
>
>Name:METHYL ETHYL KETOXIME
>CAS:96-29-7
>RTECS #:FL9275000
>< Wt:.5
>
>So you MIGHT TRY a mix of MEK and lighter fluid. No guarantees. It might
>not work because the varnish may polymerize as it dries.
>
>FWIW,
>
>-John
>
I've tried both of these but not mixed. MEK dissolves almost anything but does not seem effective on MFP varnish.
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