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EC number: 201-204-4
CAS number: 79-41-4
Mortality during the acute flow-through toxicity test of
methacrylic acid to Rainbow trout (Salmo gairdneri)
Meas. Test conc. [mg/l]
Number placed in Test
Measurements During the Acute Flow-Through Toxicity Test of Methacrylic
Acid to Rainbow Trout (Salme gairdneri)
7 .1/7 .0
7 .0/7 .1
dissolved oxygen concentrations
with 95% Confidence Limits for the 96-Hour Flow-Through Toxicity Study
of Methacrylic Acid
Rainbow Trout (Salmo gairdneri)
aan accurate LC50with
95% confidence limits could not be calculated due to insufficient
In an acute toxicity study to fish (ABC Laboratory 1990) under flow
through conditions ( EPA OTS 797.1400) with Salmo gairdneri (new name:
Oncorhynchus mykiss), methacrylic acid was testet in duplicate at
nominal test concentrations of 6.5, 13, 25, 50 and 100 mg/l up to 96
hours. LC50 (96 h) was estimated to be 85 mg/l based on the mean
measured concentrations of 6.2, 12, 23, 46 and 97 mg/l.
In an additional acute toxicity test acc.OECD 203 (Degussa 1990)
methacrylic acid was tested 201 at nominal concentrations of 32, 56,
100, 180 and 320 mg/l. LC50 (96h) and NOEC (96h) were > 100 mg/l. LC100
was 180 mg/l, based on nominal concentrations.
The marine ecotoxicity of Methacrylic acid to marine fish
(Sverdrup 2001) was tested in an acute test ( OSPAR Protocols on Methods
for the Testing of Chemicals Used in the Offshore Oil Industry, 1995)
acc. with Scophthalmus maximus (Turbot). The 96 h LC50 in the
marine fish Scophthalmus maximus (Turbot) was 833 mg/L. The
corresponding freshwater 96h-LC50 in the key study was 85 mg/L in
Oncorhynchus mykiss (rainbow trout).
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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