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EC number: 457-310-8
CAS number: 127733-97-5
PLATINUM(2+), TETRAAMMINE-, (SP-4-1)-, DIACETATE (9CI)
Table 1: Percentage biodegradation of
platinum (2 +) tetraammine diacetate in the presence of activated sludge
(comparison of the test substances in bottles A and B)
Table 2: CO2 production and percentage
biodegradation of the positive control
Table 3: CO2 production and percentage
biodegradation of the toxicity control
Table 4: pH values for the different test
In a guideline study (OECD TG 301B),
conducted according to GLP, the ready biodegradability of platinum (2 +)
tetraammine diacetate was assessed in a modified Sturm test. The overall
biodegradation on day 29 was 66% as a mean of two bottles, though there
was a significant discrepancy between the bottles (19% on day 29). In
test bottle A, biodegradation of at least 60% was reached within 10 days
of biodegradation exceeding 10%. Therefore, the criterion for ready
biodegradability was met. The pH in bottle A reached 8.7 on day 28,
whereas the pH values for all other flasks at the start and end of the
test were between 7.4 and 7.8.
The reference compound, sodium acetate, was
biodegraded by 77% by day 14, thus confirming the suitability of the
activated sludge. In the toxicity control, containing both platinum (2
+) tetraammine diacetate and sodium acetate, 34% biodegradation occurred
by day 14. Therefore, the test substance was assumed to exert no
inhibitory effect on the microorganisms.
not relevant for inorganic salt
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