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EC number: 446-990-1
CAS number: -
Introduction. A study was performed to assess the ready biodegradability
of the test material in an aerobic aqueous medium. The method followed
that described in the OECD Guidelines for Testing of Chemicals (1992) No
301D, "Ready Biodegradability; Closed Bottle Test” referenced as Method
C.4-E of Commission Directive 92/69/EEC (which constitutes Annex V of
Council Directive 67/548/EEC), and US EPA Fate, Transport, and
Transformation Test Guidelines OPPTS 835.3110 Paragraph (o). This study
complies with the GLP.
Methods. The test material, at a concentration of 3.0 mg/l, was exposed
to sewage treatment micro-organisms with culture medium in sealed
culture vessels in the dark at 20 ± 0.2°C for 28 days. The degradation
of the test material was assessed by the determination of the amount of
oxygen consumed. Control solutions with inoculum and the standard
material, sodium benzoate, together with a toxicity control were used
for validation purposes.
Results. The test material attained 35% degradation after 28 days and
therefore cannot be considered to be readily biodegradable under the
strict terms and conditions of OECD Guideline No 301D.
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