Registration Dossier
Registration Dossier
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EC number: 247-728-7 | CAS number: 26479-35-6
Endpoint summary
Administrative data
Description of key information
Additional information
Available screening data show that potassium allophonate is readily biodegradable. A closed bottle ready biodegradability test performed according to Organisation for Economic Co-operation and Development (OECD) Testing Guideline 301D and in accordance with Good Laboratory Practice (GLP) requirements showed the allophonate reached >60% biodegradation within the 28-day test (ABC Laboratories, 2013). Percent degradation was calculated by expressing biochemical oxygen demand (BOD) as a percent of theoretical oxygen demand (ThOD), which was calculated to be 0.84 mg O2/mg. The percent degradation on days 7, 14, 21, and 28 was 9.5, 46.7, 78.8, and 72.1%, respectively. Since >60% biodegradation was achieved within the 28-day test (the ten day window did not apply due to the test substance being a mixture), potassium allophonate may be classified as readily biodegradable.
No data from water simulation tests are available, however reliable screening data were available from tests performed according to GLP; therefore a waiver is proposed for simulation testing. According to Column 2 of Annex IX of the REACH Regulation these studies are not necessary as available screening tests confirm that potassium allophonate is readily biodegradable.
Further, no data are available from soil simulation tests, therefore a waiver is proposed based on the results of GLP screening data. According to Column 2 of Annex IX of the REACH Regulation these studies are not necessary as available screening tests confirm that potassium allophonate is readily biodegradable.
References:
ABC Laboratories, Inc. 2013. Potassium Allophonate: Determination of the Ready Biodegradability Using the Closed Bottle Test Method. Testing laboratory: ABC Laboratories, Inc., 7200 E. ABC Lane, Columbia, MO 65202. Owner company: Kerr Fire Fighting Chemicals, Ashcroft Rd., Knowsley Industrial Park, Kirby, Liverpool L33 7TS, England. Company study no.: 68015. Report date: 2013-01-09.
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