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Monsanto
Monsanto Company 800 N. Lindbergh Boulevard St. Louis. Missouri 63166 Phone; (314) 694-1000
June 1, 1970
Dear Customer:
You have received our letter mailed February 27, 1970 notifying you of the allegations that certain poly chlorinated biphenyls (PCBs) had been found in the environment and were contaminants. Since that time other reports concerning PCBs have been published. An examination of the PCB matter has indicated that their use in synthetic resin compositions may be a source of the alleged environmental contamination.
Monsanto has sold PCB-containlng materials under the trade name of Aroclor^. These Aroclors included:
Aroclor 1232
'
Aroclor 1242
Aroclor 1248
Aroclor 1254
Aroclor 1260
Aroclor 1262
Aroclor 1268
Aroclor 4465
Aroclor 1100 Series
Montar 1
Toluene or xylene blends of the above products also contained PCB.
OSH 009668
Page 2
6/1/70
In review of the allegations which have been made concerning PCBs, and being a concerned and responsible member of the world community, we have come to a decision to discontinue the sale of PCB-containing products for modifier and plasticizer applications effective August 30, 1970.
Recognizing that this action will result in research effort on your part to find adequate replacements, we have prepared a series of data sheets outlining suggested alternatives for most applications. Copies of the report for your application may be obtained by calling the regional office closest to you as shown on the attached sheet.
We urge that you consider initiating now any necessary work on your part to effect the change to a new material. We stand ready to assist you in any way possible.
Very truly yours
ek Attachment
W. E. Schalk Director of Sales Plasticizers
DSW 009669 STLCOPCB4001315
MONSANTO COMPANY REGIONAL SALES OFFICES
Akron Marketing & Research Center 260 Springside Drive Akron, Ohio
(216) 666-4111
Chicago Sales Office 3158 Des Plaines Avenue Des Plaines, Illinois 60018
(132) 296-6688
Everett Plant Everett Station Boston, Massachusetts 02149 (617) 387-5010 New York Sales Office 277 Park Avenue New York, New York 10017 (212) 922-4111 St. Louis Sales Office 800 North Lindbergh
St. Louis, Missouri 63166
(314) OX 4-1000 Wilmington Sales Office 2005 Concord Pike
Wilmington, Delaware 19803
(302) OL 8-6531
DSW 009670
STLCOPCB4001316
REPLACEMENT SUGGESTIONS FOR AROCLORS 1232, 1242, 1248, 1254, 1260, 1262, 1268
The attached charts present the suggestions which Monsanto has put together for replacement of the Aroclors which we are withdrawing from the market. It should be noted that these suggestions are based primarily on their suitability to an application. The cost of using these replacements will range from being more expensive to less expensive.
DSW 0096 71
STLCOPCB4001317
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REPLACEMENT SUGGESTIONS FOR MONSANTO AROCLORS
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OSH 009672
STLCOPCB4001318
A dhesives
REPLACEMENT SUGGESTIONS FOR MONSANTO AROCLORS
Resin
Application
Product Presently Used
Suggested Replacements
1232' 1242 1248 " 1.254'" 126(3 1262 1253
Styrene Butadiene Rubber
Polyvinyl Acetate
Coatings
Adhesives
Emulsion Adhesives
Hot Melt Adhesives
X XXXX XXXX
XX
See chlorinated rubber, coatings for suggested starting points.
DBP, Santicizer 160, Aroclor 1221
Santicizer 218-A/885# Santicizer 160, Aroclor 1221, Santicizer 148
Santicizer 160
X This is a flame retardant filler with good heat dis tortion characteristics. Possible replacements for Aroclor 1268 might be Aroclor 5460, TPP, Phosgard C-22-R, 2XC-20 (Development product)
Other
Miscellaneous
XXX
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A 62# Aroclor 5460/38# Aroclor 1221 blend gives viscosity equal to Aroclor 1254. Maximum Aroclor 5460 concentration possible is 70#. Higher concentrations do not allow solution of Aroclor 5460 in Aroclor 1221.