Flux Remover (5252) precautions?

[Myauk]

Dear All,

We use Flux Remover 5252 to clean our PCBAs after manual soldering.

As I am a new guy in this assembly process, I don't know whether there
is any critical component sensitive to this solvent.

We have DSPIC, a few FETs, Voltage Regulator ICs and SMT passive
components on the PCBA.

Any suggestion?

Regards

 

[Phil Allison]

"Myauk"

We use Flux Remover 5252 to clean our PCBAs after manual soldering.

As I am a new guy in this assembly process, I don't know whether there
is any critical component sensitive to this solvent.

** Email the makers for info that.

Their web site doe not say what the solvent consists of nor is there any
MSDS on the site.

Very bad.

At a guess, it is basically IPA, which is pretty harmless to components.



...... Phil

 

[Phil Allison]

"John Larkin"

This shows the contents:

http://nteinc.com/MSDS/kester/MSDS 5252 US (11Sep03).pdf

The acetone could lunch some plastics and maybe film capacitors.

** How did you extract that pdf from Kester ??

Their MSDS search page says it does not exist.



..... Phil

 

[Myauk]

This shows the contents:

http://nteinc.com/MSDS/kester/MSDS 5252 US (11Sep03).pdf

The acetone could lunch some plastics and maybe film capacitors. The
parts you mention, assuming surface-moung ceramic resistors and caps,
should be OK.

It does look a little harsh for general-purpose electronics cleaning.

How do you apply it?

John

Dear John,

Thanks for the info.

We soaked a piece cleaning cloth with the solvent and then cleaned the
soldered joints.

Will there be any problem?

Should we use a better type of solvent?

Regards

Aung

 

[krw]

"Myauk"



** Email the makers for info that.

Their web site doe not say what the solvent consists of nor is there any
MSDS on the site.

Very bad.

At a guess, it is basically IPA, which is pretty harmless to components.

Unless they drink too much.

 

[Nico Coesel]

Dear John,

Thanks for the info.

We soaked a piece cleaning cloth with the solvent and then cleaned the
soldered joints.

Will there be any problem?

Not if you are using a fume hood and proper gloves as personal
protection. IPA (non drinkable clean alcohol) is a safer choice, but
works slower.

 

[K Ludger]

The main ingredient in 5252 is ipa, or its near cousin...

http://en.wikipedia.org/wiki/Propanol

Pure ipa tends to leave white crud when used to remove flux, hence the
additives.

John

I thought the white crud left behind was the "acid salts" from the flux and
that the alcohol as a non-polar solvent dissolved the rosin but not the
salts. I thought a polar solvent (like water) was needed to get rid of the
salts - or is acetone or mentha-1,8-diene polar?

 

[[email protected]]

[email protected] says...>










Unless they drink too much.- Hide quoted text -

- Show quoted text -

Was there anything more wonderful than a freon tank? I long for the
days of a freon tank. Most alternative just do a good job of
spreading the flux out evenly over the board.

 

[[email protected]]

I always liked TCE ;-)

                                        ...Jim Thompson
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 I love to cook with wine     Sometimes I even put it in the food- Hide quoted text -

- Show quoted text -

That sh*t worked good too. A little bottle on your bench. Alcohol is
so pathetic.

 

[krw]

I always liked TCE ;-)

India Pale Ale tastes much better.

 

[krw]

That sounds strange, doesn't it?

Back in the days when Freon was declared good... now Freon is declared
bad ;-)

DDT was once declared good too, before Africans were declared bad.

 

[K Ludger]

[snip]

http://www.kester.com/en-us/documentation/White Residue (26Jan05).pdf

John

Cheers John - lots of interesting info in that paper.