Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
no data: aquatic toxicity unlikely

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.12 mg/L
Assessment factor:
2 000
Extrapolation method:
assessment factor

STP

Hazard assessment conclusion:
no emission to STP expected

Sediment (freshwater)

Hazard assessment conclusion:
no exposure of sediment expected

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.097 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:
no exposure of soil expected

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Conclusion on classification

Acute data are available for all three trophic levels. None of the species tested were particularly sensitive to SAS. A 96-hr LC50 of >240 mg/L was identified for the marine fish species Scophthalmus maximus (turbot). A 48-hr EC50 = 380 mg/L was obtained for Acartia tonsa (copepod) and a 72-hr ErC50 = 390 mg/L was found for Skeletonema costatum (marine diatom). No chronic toxicity data are available for aquatic organisms.

Conservatively, the reference effect level was taken from the turbot study, and set equal to the highest concentration tested (240 mg/L). This value is greater than the critical value of 100 mg/L for Chronic Category 3 classification (EC, 2008). The next step would be to evaluate SAS for possible classification as Chronic Category 4. SAS is considered to be persistent in the environment and some constituents have indicated log Kows of ≥ 4; however, based on the high molecular weight and polarity of SAS constituents, the potential for bioconcentration and bioaccumulation of SAS in aquatic and benthic species is low. Predicted BCF values provide further support for this conclusion. As such, SAS can be exempt from classification as Chronic Category 4 and no classification is required.