can you check using sem/edx see if it is TiO2 or some others?  It should be
TiO2 I believe...someone may replaced by others..

White Pigment Discovery Date
White Lead 4th century before Christ
Zinc Oxide middle of 18th century
Lithopone middle of 19th century
Anatase TiO2 1919
Rutile TiO2 1939
                       jk
-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Franklin Asbell
Sent: Thursday, September 08, 2005 12:38 PM
To: [log in to unmask]
Subject: [TN] Pink symbol ink...


We got a call from a customer expressing an interesting issue.



They ran product through their wave solder and the symbolization went from
white to pink.



I've never heard of this color change appearing, anyone out there have an
idea?



The symbol is Enthone 50-100R - white, the wave solder info I have is Type R
flux with a peak temperature of 215 C.



Appreciate any input, thanks.



Franklin

pI


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