Groups > sci.electronics.design > #461939

Re: Again with flux removal

From	Sergey Kubushyn <ksi@koi8.net>
Newsgroups	sci.electronics.design
Subject	Re: Again with flux removal
Date	2017-05-27 02:08 +0000
Organization	A noiseless patient Spider
Message-ID	<ogan33$vk9$1@dont-email.me> (permalink)
References	<3875e5b6-3f13-4d8d-b65c-621376c04885@googlegroups.com> <no4ficl7jt3m3b081ljeu05gvvqsq7stcn@4ax.com> <og8bjn$na7$1@dont-email.me> <og9utv$rb9$1@dont-email.me> <ogai2p$prm$1@dont-email.me>

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rickman <gnuarm@gmail.com> wrote:
> Sergey Kubushyn wrote on 5/26/2017 3:16 PM:
>> rickman <gnuarm@gmail.com> wrote:
>>> Spehro Pefhany wrote on 5/25/2017 10:43 PM:
>>>> On Thu, 25 May 2017 11:32:14 -0700 (PDT), the renowned George Herold
>>>> <gherold@teachspin.com> wrote:
>>>>
>>>>> Well this is a good thread
>>>>> https://groups.google.com/forum/?fromgroups=&hl=en#!searchin/sci.electronics.design/rosin$20flux%7Csort:relevance/sci.electronics.design/iYOz2oYarTY/xFZwiD-1izYJ
>>>>>
>>>>> (Sorry I'm not sure how to rip out the search function.)
>>>>>
>>>>> Oh and an updated link to Jeff L's White residue pdf
>>>>> http://www.kester.com/Portals/0/Documents/Knowledge%20Base/White_Residue.pdf
>>>>>
>>>>> Anyway I've got a few hand built pcb's Kester 44 solder/ rosin flux.
>>>>> They are not high impedance and I just want them to look nice.
>>>>>
>>>>> I tried cleaning with IPA only... looked like crap.
>>>>>
>>>>> So I'm using IPA then detergent and hot water.
>>>>> Well the detergent is this "awesome cleaner"
>>>>> https://www.amazon.com/LAS-PURPOSE-CONCENTRATED-TOTALLY-AWESOME/dp/B0017KT3IM
>>>>>
>>>>> (as seen on TV :^)
>>>>>
>>>>> Any thoughts?
>>>>> George H.
>>>>
>>>> For prototypes I use Recochem lacquer thinner from Crappy Tire and a
>>>> toothbrush. The boards look great and are easy to inspect.
>>>>
>>>> Not all lacquer thinners are equal- this one is relatively low in
>>>> acetone, about 10%.
>>>>
>>>> https://web.chempliance.com/MSDS/OpenDoc.ashx?DocID=24450
>>>>
>>>> It's mostly toluene + methanol + xylene. It can take markings off of
>>>> some parts, but it is nowhere as bad as pure acetone.
>>>
>>> Seems like a bit of overkill.  Does ethyl alcohol not work for you?
>>> Toluene and xylene have been found to increase the risk of some
>>> leukemias.  I can't see a reason to use them at all if you can avoid it.
>>
>> Are you from Califonia? They must've been adding something to the water so
>> their entire population is zombified...
>>
>> If you look at most any solvent sold in home improvement stores all over the
>> country you would almost certainly find some note kinda "Not for sale in
>> California"...
>>
>> It is definitely harmful if you have to breethe it 5 days a week for full 8
>> hours but sniffing it occasionally from time to time is no more harmful than
>> going outside and taking a breath of "fresh air" filled with all kinds of
>> pollutants. Even pure hydrogen dioxide is lethal in proper doses...
> 
> Yes, that is the typical ignorant response to health effects of 
> substances.  You are free to breath what you wish.  As I mentioned, the 
> impact of individual substances are often not so great so as to warrant 
> banning outright.  There is a thing called augmentation.  Two substances 
> cause infrequent cancers with separate exposure.  Combine them and the 
> rate of cancers becomes much higher.  They can't possibly test against 
> all possible combinations of the tens of thousands of chemicals we 
> potentially can be exposed to.  So a little caution can go a long way.
> 
> Cancer rates continue to climb.  It's not like you don't have any 
> control over what you are exposed to.

Man, you should not be scared by _EVERYTHING_ . Gluten, xylene, parabens,
ketones, cholesterol, meat, whatever else they come out with today.

Just in case -- xylene is a component of infamous "Goo Gone" and "Goof Off"
adhesive removers that are sold in each and every store all over the country
(except, may be, California.) Pure Xylene is also on the shelves of every
home improvement store all over the country (except, may be, California.)
There are also plenty of other stuff with even more harmful and dangerous
components (e.g. Hydrofluoric Acid, Tetrahydrofuran, etc) around you. Lots
of such chemicals added to your everyday food and it doesn't matter if they
are syntetic or "organic." That is not even starting on what you inhale with
your every breath. IPA is not also all that healthy.

The only way to avoid all those is to just stop living.

BTW, Xylene is not considered as cancirogen and no long-term effects of
exposure to it are known. Toluene is more harmful that is why it is not sold
in Home Depot and others of its kind. Xylene (actually it is "Xylenes" or
Xylol as it is a mixture of o-, m-, and p- isomers) is freely available in
any of those stores.

Here:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2996004/

PS: Watching CNN is orders of magnitude more harmful for one's health :)

---
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Thread

Again with flux removal George Herold <gherold@teachspin.com> - 2017-05-25 11:32 -0700
  Re: Again with flux removal John S <Sophi.2@invalid.org> - 2017-05-25 14:37 -0500
  Re: Again with flux removal rickman <gnuarm@gmail.com> - 2017-05-25 15:54 -0400
    Re: Again with flux removal Jon Elson <jmelson@wustl.edu> - 2017-05-25 16:22 -0500
  Re: Again with flux removal Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-05-25 16:20 -0400
    Re: Again with flux removal Sergey Kubushyn <ksi@koi8.net> - 2017-05-25 21:25 +0000
      Re: Again with flux removal rickman <gnuarm@gmail.com> - 2017-05-25 18:31 -0400
        Re: Again with flux removal Sergey Kubushyn <ksi@koi8.net> - 2017-05-26 15:05 +0000
          Re: Again with flux removal rickman <gnuarm@gmail.com> - 2017-05-26 12:06 -0400
        Re: Again with flux removal DemonicTubes <tlackie@gmail.com> - 2017-05-26 10:27 -0700
      Re: Again with flux removal George Herold <gherold@teachspin.com> - 2017-05-26 08:48 -0700
      Re: Again with flux removal Joseph Gwinn <gwinn@comcast.net> - 2017-05-26 18:06 -0400
        Re: Again with flux removal George Herold <gherold@teachspin.com> - 2017-05-26 17:32 -0700
      Re: Again with flux removal Joseph Gwinn <gwinn@comcast.net> - 2017-05-26 18:13 -0400
      Re: Again with flux removal (Test - ignore duplicate) Joseph Gwinn <gwinn@comcast.net> - 2017-05-26 18:20 -0400
      Re: Again with flux removal (Test - ignore duplicate) Joseph Gwinn <gwinn@comcast.net> - 2017-05-26 18:35 -0400
  Re: Again with flux removal Jeff Liebermann <jeffl@cruzio.com> - 2017-05-25 17:15 -0700
    Re: Again with flux removal George Herold <gherold@teachspin.com> - 2017-05-26 06:39 -0700
      Re: Again with flux removal rickman <gnuarm@gmail.com> - 2017-05-26 12:08 -0400
        Re: Again with flux removal Jeff Liebermann <jeffl@cruzio.com> - 2017-05-26 10:12 -0700
          Re: Again with flux removal rickman <gnuarm@gmail.com> - 2017-05-26 14:08 -0400
            Re: Again with flux removal Jeff Liebermann <jeffl@cruzio.com> - 2017-05-26 13:56 -0700
              Re: Again with flux removal rickman <gnuarm@gmail.com> - 2017-05-26 20:35 -0400
                Re: Again with flux removal Jeff Liebermann <jeffl@cruzio.com> - 2017-05-26 18:10 -0700
                Re: Again with flux removal rickman <gnuarm@gmail.com> - 2017-05-26 21:28 -0400
      Re: Again with flux removal Jeff Liebermann <jeffl@cruzio.com> - 2017-05-26 09:45 -0700
        Re: Again with flux removal Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-05-26 10:02 -0700
          Re: Again with flux removal Jeff Liebermann <jeffl@cruzio.com> - 2017-05-26 10:43 -0700
            Re: Again with flux removal rickman <gnuarm@gmail.com> - 2017-05-26 14:00 -0400
  Re: Again with flux removal Spehro Pefhany <speffSNIP@interlogDOTyou.knowwhat> - 2017-05-25 22:43 -0400
    Re: Again with flux removal rickman <gnuarm@gmail.com> - 2017-05-26 00:43 -0400
      Re: Again with flux removal Sergey Kubushyn <ksi@koi8.net> - 2017-05-26 19:16 +0000
        Re: Again with flux removal rickman <gnuarm@gmail.com> - 2017-05-26 20:46 -0400
          Re: Again with flux removal Sergey Kubushyn <ksi@koi8.net> - 2017-05-27 02:08 +0000
            Re: Again with flux removal rickman <gnuarm@gmail.com> - 2017-05-27 01:06 -0400
              Re: Again with flux removal Sergey Kubushyn <ksi@koi8.net> - 2017-05-27 05:38 +0000
              Re: Again with flux removal Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-05-27 08:17 +0000
                Re: Again with flux removal rickman <gnuarm@gmail.com> - 2017-05-27 04:37 -0400
                Re: Again with flux removal Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-05-27 10:33 +0000
                Re: Again with flux removal rickman <gnuarm@gmail.com> - 2017-05-27 11:51 -0400
                Re: Again with flux removal Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-05-27 15:59 +0000
                Re: Again with flux removal rickman <gnuarm@gmail.com> - 2017-05-27 12:13 -0400
                Re: Again with flux removal Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-05-27 16:27 +0000
    Re: Again with flux removal George Herold <gherold@teachspin.com> - 2017-05-26 07:00 -0700
      Re: Again with flux removal rickman <gnuarm@gmail.com> - 2017-05-26 12:13 -0400
  Re: Again with flux removal whit3rd <whit3rd@gmail.com> - 2017-05-25 21:28 -0700
    Re: Again with flux removal George Herold <gherold@teachspin.com> - 2017-05-26 07:04 -0700
      Re: Again with flux removal rickman <gnuarm@gmail.com> - 2017-05-26 12:16 -0400
      Re: Again with flux removal whit3rd <whit3rd@gmail.com> - 2017-05-26 14:33 -0700

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