Registration Dossier
Registration Dossier
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EC number: 221-201-1 | CAS number: 3030-47-5
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The substance Pentamethyldiethylentriamine can be regarded as not biodegradable under the test condition.
In the key study for ready biodegradability (test according to OECD 301 E, Modified OECD Screening Test) was after 28 days observed less than 10% of DOC removal ( BASF, 1991a).
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
The results of key study - no biodegradation of pentamethyldiethylenetriamine PMDETA - are supported with the others studies such a ready biodegradability test according to OECD 301C (Japanese Government, 2010), biochemical oxygen demand (BOD) test (Consior and Madsen, 1988) and the inherent biodegradability tests (BASF, 1987 and BASF, 1991b).
Biodegradability information on PMDETA from the results of the existing chemicals survey program conducted by the Japanese Government (Ministry of Healt and the Ministry of the Environment) or Sponsored by companies under Japan HPV Challenge Program shows 0% of biodegradation after 4 weeks (MITI test) using BOD and TOC parameter (Japanese Government, 2010).
Consior and Madsen, 1988 performed a biochemical oxygen demand (BOD) determination for pentamethyldiethylenetriamine (PMDETA) using the BOD test, which is a conservative screening procedure for the determination of rapid biodegradation. No detectable BOD was observed with a municipal inoculum after 28 days of incubation and slight biodegradation was noted with an industrial inoculum where the 28 day BOD was 2% of the THOD (Consior and Madsen, 1988).
In the inherent biodegradability studies according to OECD Guideline 302 B (Inherent biodegradability: Zahn-Wellens/EMPA Test) 12 % (BASF 1987) resp. 1 % (BASF 1991b) of biodegradation after 28 days was observed .
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