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Ecotoxicological information

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All aquatic toxicity studies were performed in accordance with internationally-accepted test guidelines and Good Laboratory Practice (GLP) standards. Studies were carried out in sealed test chambers without headspace to avoid loss of the volatile test substance. Analytical confirmation was not completed due to the inherent difficulties of a UVCB test substance; however, the test substance was visibly present in test chambers at the outset of the experiments. The fish toxicity study is considered reliable with restrictions due to the loading level of 10 mg/L exceeding the water solubility of MTDID 22327 (< 5 ppm) potentially only by a factor of two. The invertebrate and algae studies are considered reliable without restrictions. The results from all three tests are suitable for purposes of Risk Assessment, Classification & Labeling, and PBT Analysis. Results are reproduced below.

Species Endpoint Concentration Results
parameter
Reliability
(Klimisch)
Fish
Brachydanio rerio 96-hour
LC50
> 10 mg/L
(nominal)
Mortality 2
Invertebrate
Daphnia magna 48-hour
EC50
> 100 mg/L
(nominal)
Immobilization 1
Algae
Pseudokirchneriella
subcapitata
72-hour
EC50

72-hour
EC10
> 100 mg/L
(nominal)

> 100 mg/L
(nominal)
Growth Rate 1
Microorganisms Waived (no exposure)

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