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EC number: 212-084-8 | CAS number: 760-93-0
Methacrylic anhydride rapidly hydrolysis to methacrylic acid in aqueous media. Therefore assessment of aquatic toxicity to Methacrylic anhydride based on studies with methacrylic acid is recommended.
In a valid guideline study, the EC50 for MAA to Pseudomonas putida was 270 mg/L after 17 hours; the EC10 was 100 mg/L.
EC10 (17 h) of the hydrolysis product methacrylic acid for freshwater microorganisms: 100 mg/l
Methacrylic anhydride is hydrolytically unstable in water. The initial hydrolysis product is methacrylic acid. The EC10 (17 h) of methacrylic acid for fresh water microorganisms was tested to be 100 mg/l with pseudomonas putida in a DIN 38412 growth inhibition test. EC50 (17 h) was 270 mg/l.
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