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Telomer Research Program
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Report Title: Aqueous Stability of 8-2 Telomer B Alcohol as a Function of pFI
Author(s): William R. Berti
Contractor: DuPont Central Research & Development, Newark, Delaware
Study Dates:
Study Initiation Date: Experimental Start Date: Experimental Completion Date Study Completion Date:
6-May-2002 15-July-2002 9-September-2002 25-March-2003
Study Objective:
1. To determine if a compound is stable in an aqueous environment,
2. To provide a material mass balance that accounts for greater then 90% of the initially applied test substance.
Materials and Methods
The aqueous stability of the test substance 8-2 Telomer B Alcohol (i.e., 8-2 TBA; CAS Name: 1Decanol, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluoro-; CAS# 678-39-7) in sterile aqueous solutions buffered at pH 1.2, 4.0, 7.0, and 9.0 was detennined. Test systems consisted of the test substance in aqueous buffered solutions in sterilized containers. The test system was incubated in the dark at 50C at pH 4, 7, and 9 and at 37C at pH 1.2. An unstable test substance is indicated by a 10% or greater loss of test substance within 5 days.
Findings
The test substance, 8-2 TBA, is stable under the conditions of the test at pH 4, 7, and 9 at 50C and pH 1.2 at 37C.
Data table follows.
Does not contain TSCA CBI
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TRP 25-Apr-03
Table 1.
Concentration of 8-2 TBA at pH 1.2 at 37C and at pH 4, 7, and 9 at 50C after 0 and 5 Days
8-2 TB A Average
D ifference betw een
pH
Tim e
D a te
C o n c e n tra tio n
Day 5 and Day 0$
Day
ugL1
%
1.2
0
2 1 -A u g -2 0 0 2
183 10.9$
1.2
5
2 6 -A u g -2 0 0 2
195 8 .00
+6.4
4
0
2 4 -J u l-2 0 0 2
156 + 4.22
4
5
2 9 -J u l-2 0 0 2
143 10.0
-8.7
7
0
2 1 -A u g -2 0 0 2
199 + 9.12
7
5
2 6 -A u g -2 0 0 2
181 12.6
-9.5
9
0
2 1 -A u g -2 0 0 2
169 5.99
9
5
2 6 -A u g -2 0 0 2
175 10.5
+3.5
t Difference between Day 5 and Day 0, % = (C5 - C0)/((C5 + C0)/2) x 100, where: C0 = 8-2 TBA concentration at Day 0 C5= 8-2 TBA concentration at Day 5
J Mean standard deviation; n = 4.
Conclusion
The time in which 50% of the test substance will transform in water at environmentally relevant pH ranges and temperatures is greater than one year (t>/2>1 year), because >90% of the test substance added at Day 0 was recovered after 5 days at pH 1.2 and 37C and pH 4.0, 7.0, and 9.0 and 50C.
Publications / Presentations SETAC North America 2002 Platform Presentation
Does not contain TSCA CBI
2
TRP 25-Apr-03
