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EC number: 207-236-5
CAS number: 455-14-1
In a 72 -hour toxicity study
(Springbornsmithers, 2009), the effects of p-TFMA on the growth of algae
Pseudohirchneriella subcapitata were evaluated according to OECD 201
The cultures of algae were exposed to p-TFMA
(purity 98.2%) at concentrations of 0, 0.1, 0.32, 1, 3.2, 10, 32 and 100
mg test item/L, under static conditions.
At experimental completion (72 hours), cells
exposed to all the treatment levels tested were observed to be normal.
No change in the characteristics of the test solutions was observed
throughout the duration of the test, apart from the highest test
concentration, where at test termination a slight precipitation was
observed on the edge of the test vessels.
The EC50 and EC10 based on growth rate after
72 hours were 8.48 and 2.28 mg/L respectively.
The NOEC based on growth rate and biomass after
72 hours was 0.61 mg/L.
Based on these results, p-TFMA could be
considered as toxic for algae.
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