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Re: [ARSCLIST] shellac and acidity
The lacquer polymer is inherently more labile to acid catalyzed
decomposition than is shellac polymer. Moisture will accelerate the
process for both. The combination of moisture & a mild acidic environment
[such as found in the natural decomposition of old paper sleeves] will have
a greater potential to degrade lacquer than shellac.
All modern paper has a lower acid content than original sleeves and from a
safety standpoint replacement with plain text stock would be a vast
At 11:47 AM 6/3/2003 -0400, you wrote:
>>> nauck@xxxxxxxxx 06/03/03 11:17AM >>>
I have just received lab results back from Terry Tullos Wayland, who is
"Kurt, your DOF specimen is a moderately acidic pH 4.59."
For what it's worth, there you have it.
Kurt & Diane Nauck
c/o Nauck's Vintage Records
22004 Sherrod Ln.
Spring, TX 77389
Phone: (281) 288-7826
Fax: (425) 930-6862
h. duane goldman, ph.d. | P.O. Box 37066 St. Louis, MO 63141
lagniappe chem. ltd. | (314) 205 1388 voice/fax
"for the sound you thought you bought" | http://discdoc.com