Steve - To the best of my recollection, Quadrol was added to OAWSF solder pastes  typically  to provide some heat stability and  body/rheology, and yet to remain reasonably water soluble. At least in Sn/Pb systems- not sure about PbF. Rather like a poly-alkylene glycol. 

I seem to recall that the amine group provided some limited  solder activity also. 

Hope this helps. 

Rich Kraszewski
PLEXUS

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bev Christian
Sent: Friday, April 11, 2014 7:46 PM
To: [log in to unmask]
Subject: Re: [TN] What is QuadrolR and it's function in a water soluble flux?

Steve,
Here is what I found so far:

N,N,N',N'-Tetrakis(2-hydroxypropyl)ethylenediamine 
 
mp : 32°C  
 
bp : 175-181 °C0.8 mm Hg(lit.)
 
 
density : 1.03 g/mL at 20 °C(lit.)
 
 
vapor pressure : 1 mm Hg ( 20 °C)
 
 
refractive index : n20/D 1.4812(lit.)
 
 
Fp : >230 °F
 
 
Water Solubility : miscible 
 
Merck : 14,3599 
 
CAS DataBase Reference: 102-60-3(CAS DataBase Reference) 
 
EPA Substance Registry System: 
2-Propanol, 1,1',1'',1'''-( 1,2-ethanediyldinitrilo)tetrakis- 

 clear colorless to pale yellow viscous liquid

Used as a buffer for trifluoroacetic acid.
Used for drug development.

"Quadrol is used as an intermediate and catalyst in chemical reactions, as a
complexing and chelating agent, and as a humectant, plasticizer, surfactant
solubilizer, and viscosity control agent."  From a submission from BASF to
the EPA.

Regards,
Bev
 


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
Sent: Friday, April 11, 2014 2:53 PM
To: [log in to unmask]
Subject: [TN] What is QuadrolR and it's function in a water soluble flux?

Hi all,

 

Got a question about a chemical called Quadrol(r). I was told that it is
a constituent of the water soluble flux in our paste.

 

I'm experiencing solder balls, and was told it may be caused from a
certain batch of Quadrol(r) that was used.

 

From someone who has no real chemistry background, can someone educate
me what is the function of Quadrol(r) is in a water soluble flux?

 

I'm doing something dangerous here, trying to learn something
new....hehehe.

 

Steve 

 


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