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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Toxicity to microorganisms

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Description of key information

In a 1 hour toxicity study conducted according to DIN 38412 part 27 (Bacteria Respiration Test), the cultures of Pseudomonas putida were exposed to Sucroglyceride C12-18, C18unsatd. at nominal concentration of 10 g/L under static conditions. No inhibition of the bacterial respiration with the tested concentration was observed. This study is classified as reliable with restriction because in this test, performed according to national standard methods, no analytical control, no dilution series, no parallel tests were conducted. 
The test conditions did not meet the current standards for PNEC derivation as given in TGD on risk assessment. However, the study is considered to be reliable and acceptable, because Sucroglyceride C12-18, C18unsatd. is readily biodegradable. In accordance with column 2 of REACH Annex VIII, the activated sludge respiration inhibition test does not need to be conducted as this substance was found to be readily biodegradable and the applied test concentrations are in the range of concentrations that can be expected in the influent of a sewage treatment plant.
The 1 h-EC50 was > 10000 mg/L.

Key value for chemical safety assessment

EC50 for microorganisms:
10 000 mg/L

Additional information

In a 1 hour toxicity study conducted according to DIN 38412 part 27 (Bacteria Respiration Test), the cultures of Pseudomonas putida were exposed to Sucroglyceride C12-18, C18unsatd. at nominal concentration of 10 g/L under static conditions. No inhibition of the bacterial respiration with the tested concentration was observed. This study is classified as reliable with restriction because in this test, performed according to national standard methods, no analytical control, no dilution series, no parallel tests were conducted.

The 1 h EC50 was > 10000 mg/L.

The test conditions did not meet the current standards for PNEC derivation as given in TGD on risk assessment. However, the study is considered to be reliable and acceptable, because Sucroglyceride C12-18, C18unsatd. is readily biodegradable. In accordance with column 2 of REACH Annex VIII, the activated sludge respiration inhibition test does not need to be conducted as this substance was found to be readily biodegradable and the applied test concentrations are in the range of concentrations that can be expected in the influent of a sewage treatment plant.

This finding is supported by a similar study performed on the structural analogue Sucroglyceride C12:

In a 1 hour toxicity study conducted according toDIN 38412 part 27 (Bacteria Respiration test), the cultures of Pseudomonas putida were exposed to Sucroglyceride C12at nominal concentration of 10 g/L under static conditions. No analytical control was performed.

No inhibition of the bacterial respiration with the tested concentration was observed.

This study is classified as reliable with restriction because in this test, performed according to national standard methods, no analytical control, no dilution series, no parallel tests were conducted. The 1 h EC50 was >10000 mg/L