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EC number: 229-764-5 | CAS number: 6712-98-7
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
The dissociation constant (pKa) of DEIPA was determined to be 8.24 at a sample concentration of 0.01 M and at 20oC (Butler, 2012).
Key value for chemical safety assessment
- pKa at 20°C:
- 8.24
Additional information
By using the titration method, equivalent to OECD test guideline 112 and in compliance with GLP, the dissociation constant (pKa) of DEIPA was determined to be 8.24 at a sample concentration of 0.01 M and at 20oC (Butler, 2012).
NICNAS (2009) noted that DEIPA "will be ionised in the environmental pH range of 4-9" (based on an estimated pka of 8.43).
References
NICNAS (2009). Australian National Industrial Chemicals Notification and Assessment Scheme. Full Public Report. DEIPA. File No: STD/1344. December 2009.http://www.nicnas.gov.au/publications/CAR/new/Std/StdFULLR/std1000FR/std1344FR.pdf
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