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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Ecotoxicological Summary

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Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.005 mg/L
Assessment factor:
50
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.012 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0 mg/L
Assessment factor:
500
Extrapolation method:
assessment factor

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
10 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
3.54 mg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.354 mg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
0.702 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
PNEC oral
PNEC value:
5.33 mg/kg food
Assessment factor:
300

Additional information

Conclusion on classification

Results for C16MES - short term:                                   Results for C18MES - short term:

Fish: LC50 = 1.5 mg/L                                                    Fish: LC50 = 0.44 mg/L

Daphnia EC50 = 1.24 mg/L                                            Daphnia EC50 = 0.252 mg/L - 0.373 mg/L

Algae EC50 > 10 mg/L and NOEC >= 10                      Algae EC50 > 0.8 mg/L and NOEC >= 0.8 mg/L

Results for C16MES - long term:                                    Results for C18MES - long term

Daphnia NOEC = 0.24 mg/L                                          Daphnia NOEC = 0.23 mg/L

Acute toxicity

The substance C16MES has acute aquatic toxicity above 1 mg/L. This means that this substance is not falling into any category for acute aquatic hazard.

The substance C18MES has acute aquatic toxicity below 1 mg/L. This means that this substance has to be classified into the category 1 of Acute aquatic hazard according to CLP.

The reaction mass of C16MES and C18MES:

For the legal entity composition, the reaction mass of the two substances contains less than 25% C18MES. Based on the CLP classification of mixtures, the reaction mass does not require a label for Acute Toxicity Category 1.

For the Boundary composition, the reaction mass of the two substances contains less than 40% C18MES. Based on the CLP classification of mixtures, the reaction mass might need a label for Acute Toxicity Category 1 if the reaction mass contains > 25% C18MES.

Long-term hazard

Based on the results of the long-term Daphnia for C16MES (0.24 mg/L) and C18MES (0.23 mg/L), both components need to be classified as Category Chronic 3 according to the second ATP amendment to the CLP Regulation.

Therefore, also the reaction mass of the two components needs to be classified for long-term aquatic hazard as Chronic 3 with hazard statement: H412: Harmful to aquatic life with long lasting effects.