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EC number: 204-424-9
CAS number: 120-78-5
No mortalities related to the toxicant occured in fish exposed to
Thiofide at the highest nominal concentrations (15 mg/l) tested.
However, all samples from highest concentration were below the detection
level and probably contained less than 1 mg/l test substance. Because
the actual stock concentraitons agreed very well with the nominal
concentrations and syringe pumps and diluter were functioning properly,
the test substance must have entered the test system at close to nominal
levels. The water in test vessels were observed to be slightly cloudy in
the highest concentration, and hence the test substance is suspected to
be not fully soluble under the test temperature 13°C (water solubility
at 25 °C: 0.27 -0.37 mg/L). The result can be interprated as LC0 higher
than the water solubility of the MBTS at 13°C.
No acute toxicity of MBTS was observed to Oncorhynchus mykiss up to its
water solubility (<1mg/L) during 96 hours exposure in a flow-through
system according to OECD Guideline 203 (Monsanto, 1981).
No acute toxicity of MBTS was observed to Oncorhynchus mykiss up to its water solubility (<1mg/L) during 96 hours exposure in a flow-through system according to OECD Guideline 203 (Monsanto, 1981).
Further supporting information from studies without analytical
monitoring: - Monsanto (1979): 96h-LC0 >= 1000 mg/L to Pimephales
promelas with the observation of precipitation in the test chamber -
MITI Book (1992): 48h-LC50 = 19 mg/L to Oryzias latipes The effect
concentrations are reported based on nominal concentrations and much
higher than the water solubility of MBTS; and hence the observed effect
is due to both dissolved and undissolved substance.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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