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The acute toxicity of Reaction product of Rosin, fumarated, Tall-Oil Rosin, Ca(OH)2 and MgO towards fish (Danio rerio) was determined according to the EU Method C.1 yielding a LL50(96 h) of 54 mg/L.

The acute toxicity of Reaction product of Rosin, fumarated, Tall-Oil Rosin, Ca(OH)2 and MgO towards invertebrates (Daphnia magna) was determined according to the EU Method C.2 yielding a EL50(48 h) of 31.1 mg/L.

Reaction product of Rosin, fumarated, Tall-Oil Rosin, Ca(OH)2 and MgO was tested for toxicity towards algal growth according to the EU Method C.3 yielding an ErL50 (72 h) > 100 mg/L.

The effect of Reaction product of Rosin, fumarated, Tall-Oil Rosin, Ca(OH)2 and MgO towards the respiration of activated sludge was investigated according to OECD Guideline No 209. The EC50(3 h) as well as the EC10(3 h) is greater than 1000 mg/L.