|
I use acetic acid (vinegar) to clean alkaline battery residue and baking soda in solution to clean acid battery residue.
toggle quoted message
Show quoted text
I have a wash bottle of both on the work bench. I follow this up by flooding the area with distilled water with the board angled such that the contaminated area is closest to the bottom. This is followed by cleaning the area with IPA then warming with a hot air gun. Ensure that you neutralize any residue that has made its way into vias. If the board is multi layer and the residue has gotten into the inner layers, the board may take heroic efforts to salvage it. Glenn On 8/5/2018 2:45 PM, Richard L. Wurdack wrote:
--
----------------------------------------------------------------------- Glenn Little ARRL Technical Specialist QCWA LM 28417 Amateur Callsign: WB4UIV wb4uiv@... AMSAT LM 2178 QTH: Goose Creek, SC USA (EM92xx) USSVI LM NRA LM SBE ARRL TAPR "It is not the class of license that the Amateur holds but the class of the Amateur that holds the license" |
|
I use acetic acid (vinegar) to clean alkaline battery residue and baking soda in solution to clean acid battery residue.
toggle quoted message
Show quoted text
I have a wash bottle of both on the work bench. I follow this up by flooding the area with distilled water with the board angled such that the contaminated area is closest to the bottom. This is followed by cleaning the area with IPA then warming with a hot air gun. Ensure that you neutralize any residue that has made its way into vias. If the board is multi layer and the residue has gotten into the inner layers, the board may take heroic efforts to salvage it. Glenn On 8/5/2018 2:45 PM, Richard L. Wurdack wrote:
--
----------------------------------------------------------------------- Glenn Little ARRL Technical Specialist QCWA LM 28417 Amateur Callsign: WB4UIV wb4uiv@... AMSAT LM 2178 QTH: Goose Creek, SC USA (EM92xx) USSVI LM NRA LM SBE ARRL TAPR "It is not the class of license that the Amateur holds but the class of the Amateur that holds the license" |
|
On Sun, 5 Aug 2018, Glenn Little wrote:
I use acetic acid (vinegar) to clean alkaline battery residue and baking soda in solution to clean acid battery residue.Formic acid is better than acetic -- it is more volatile than water or IPA so whatever left after the cleaning will simply evaporates without a trace. Don't use concentrated formic acid -- it has extremely strong odor (kinda like acetic but many times stronger), it burns skin and will etch too much. Dilute it with something like 5 parts of water. As for baking soda for cleaning acid -- it is also not the best choice. Ammonia is much better for the same reason as formic acid -- ammonium salts are volatile unlike sodium. And excess ammonia will simply evaporate by itself. Sodium sulfate, on the other hand, is difficult to remove completely and it will keep etching your board. It is a very slow process but sooner or later (couple of years) it WILL etch holes in copper traces. --- * * KSI@home KOI8 Net < > The impossible we do immediately. * * Las Vegas NV, USA < > Miracles require 24-hour notice. * * |
|
Thanks
toggle quoted message
Show quoted text
As you can see I a not a chemist. I will order some 95% formic acid soon. Glenn On 8/5/2018 3:52 PM, Sergey Kubushyn wrote:
On Sun, 5 Aug 2018, Glenn Little wrote:I use acetic acid (vinegar) to clean alkaline battery residue and baking soda in solution to clean acid battery residue.Formic acid is better than acetic -- it is more volatile than water or IPA --
----------------------------------------------------------------------- Glenn Little ARRL Technical Specialist QCWA LM 28417 Amateur Callsign: WB4UIV wb4uiv@... AMSAT LM 2178 QTH: Goose Creek, SC USA (EM92xx) USSVI LM NRA LM SBE ARRL TAPR "It is not the class of license that the Amateur holds but the class of the Amateur that holds the license" |
|
Thanks
toggle quoted message
Show quoted text
As you can see I a not a chemist. I will order some 95% formic acid soon. Glenn On 8/5/2018 3:52 PM, Sergey Kubushyn wrote:
On Sun, 5 Aug 2018, Glenn Little wrote:I use acetic acid (vinegar) to clean alkaline battery residue and baking soda in solution to clean acid battery residue.Formic acid is better than acetic -- it is more volatile than water or IPA --
----------------------------------------------------------------------- Glenn Little ARRL Technical Specialist QCWA LM 28417 Amateur Callsign: WB4UIV wb4uiv@... AMSAT LM 2178 QTH: Goose Creek, SC USA (EM92xx) USSVI LM NRA LM SBE ARRL TAPR "It is not the class of license that the Amateur holds but the class of the Amateur that holds the license" |
Sergey Kubushyn