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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

M-TMP sulfinic acid was tested for its acute toxicity to the rainbow trout (Oncorhynchus mykiss) over a 96-hour exposure period. Results were used to calculate median lethal concentration (LC50) values. No-observed-effect concentrations (NOEC) were also calculated.
The following guidelines were used to conduct this study:
- USEPA FIFRA, 72-1, EPA 540/9-82-024 (1982)
- USEPA TSCA, 40 CFR 797.1400 & 1440 (1992)
- OECD, 203 (1984)
- EEC Directive 92/69/EEC, Part C.1 (1992)
The 96-hour rainbow trout static test was conducted at six treatment levels with nominal concentrations of 3.75, 7.50, 15.0, 30.0, 60.0, and 120 mg/L. A dilution water control was included in the test series. One replicate vessel with five fish was set for each treatment concentration and control for the fish test. The fish were observed daily for sublethal effects (e.g., lethargy, loss of equilibrium) and mortality.
The acute toxicity values for M-TMP Sulfinic Acid with rainbow trout were determined based on nominal concentrations. The resulting values are listed below:
- The 96-hour LC50 value was 92.5 mg/L.
- The 96-hour NOEC was 60.0 mg/L.

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
92.5 mg/L

Additional information

The acute toxicity of the test material and water to the Freshwater rainbow trout (Oncorhynchus mykiss) was investigated during a study conducted at The Dow Chemivcal Company. The test was performed from May 22 to 26, 2006 and was conducted according to recognised guidelines and GLP.

This study is presented as the key information as the reliability rating for this study is 2, according to the criteria of Klimisch, 1997, as there was no data reported in this study with regards to analytical monitoring of the test material, this is considered to be a deviation from the guideline and would therefore reduce the reliability.

Based upon the results of the acute fish study, the registered substance meets the following criteria for classification according to: 67/548/EEC: R52/53; Harmful to aquatic organisms, and may cause long-term adverse effects in the aquatic environment.

EC Regulation 1272/2008: Chronic Catergory 3; H412: Harmful to aquatic life with long lasting effects.