Form Approved
REPORT DOCUMENTATION PAGE
OMB No. 0704-0188
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1. AGENCY USE ONLY (Leave blank)
2. REPORT DATE
3. REPORT TYPE AND DATES COVERED
October 1996
4. TITLE AND SUBTITLE
5. FUNDING NUMBERS
Further Studies on the Softening of Rigid PVC by Aqueous Solutions of
Organic Solvents
6. AUTHORS
Louise V. Parker and Thomas A. Ranney
7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)
8. PERFORMING ORGANIZATION
REPORT NUMBER
U.S. Army Cold Regions Research and Engineering Laboratory
72 Lyme Road
Special Report 96-26
Hanover, New Hampshire 03755-1290
9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)
10. SPONSORING/MONITORING
AGENCY REPORT NUMBER
U.S. Army Environmental Center
Aberdeen Proving Ground, Maryland 21010-5401
SFIM-AEC-ET-CR-96156
11. SUPPLEMENTARY NOTES
For conversion of SI units to non-SI units of measurement consult ASTM Standard E380-93, Standard Practice for Use of the
International System of Units, published by the American Society for Testing and Materials, 1916 Race St., Philadelphia, Pa.
19103.
12a. DISTRIBUTION/AVAILABILITY STATEMENT
12b. DISTRIBUTION CODE
Approved for public release; distribution is unlimited.
Available from NTIS, Springfield, Virginia 22161
13. ABSTRACT (Maximum 200 words)
In this study, small pieces of PVC well casing were exposed to relatively low activities (or relative solubilities)
of TCE and methylene chloride for 12 months. PVC pieces were also exposed to aqueous solutions containing
several organic chemicals that were either solvents or swelling agents of PVC. In addition, small pieces of PVC
were exposed to aqueous solutions containing organic chemicals that were either PVC solvents or swelling
agents and were totally miscible in water. These studies revealed that there is an interactive effect among these
chemicals when dissolved in water. However, softening does not appear to occur in any solutions where the
sum of the relative solubilities is less than 0.1.
14. SUBJECT TERMS
15. NUMBER OF PAGES
31
Aqueous solutions
Polyvinyl chloride
Softening
16. PRICE CODE
Organic solvents
PVC
Solvents
17. SECURITY CLASSIFICATION
18. SECURITY CLASSIFICATION
19. SECURITY CLASSIFICATION
20. LIMITATION OF ABSTRACT
OF REPORT
OF THIS PAGE
OF ABSTRACT
UNCLASSIFIED
UNCLASSIFIED
UNCLASSIFIED
UL
Standard Form 298 (Rev. 2-89)
NSN 7540-01-280-5500
Prescribed by ANSI Std. Z39-18
298-102
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