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PBT assessment

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PBT assessment: overall result

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Name:
Sodium octane-1-sulphonate - Legal Entity Composition
Type of composition:
legal entity composition of the substance
State / form:
solid: particulate/powder
Related composition:
Sodium octane-1-sulphonate - Boundary Composition
Reference substance:
Sodium octane-1-sulphonate - Legal Entity Composition
Name:
Sodium octane-1-sulphonate - Boundary Composition
Type of composition:
boundary composition of the substance
State / form:
solid: particulate/powder
Reference substance:
Sodium octane-1-sulphonate - Boundary Composition
PBT status:
the substance is not PBT / vPvB
Justification:

In accordance with the criteria set in Annex XIII of the REACH Regulation (EC) 1907/2006 the substance is not considered PBT or vPvB.

Persistence:

The substance was found to be readily biodegradable following an OECD 301B screening study. The 28 d degradation value was 90.7%, i.e. =>60 % biodegradation after 28 d. The test item additionally degraded by 60.9% in 4 d, therefore fulfilling the 10-day window (Flach, F., 2017).

Bioaccumulation:

Two partition coefficient tests were performed on the substance [EU Method A.8: Estimation Method (Solubility Ratio) and EU Method A.8: (HPLC Method)], giving the following results:

Log Pow= < -2.25 at 20.0°C ± 1.0 °C; EU Method A.8. (Estimation Method (Solubility Ratio)); C Bär (2018)

Log Pow= < 0.0 at 20.0°C ± 1.0 °C; EU Method A.8. (HPLC Method); C Bär (2018)

Log Pow values below 4.5 such as those found above, are not considered to be highly bioaccumulative and further evaluation is not required, as described in ECHA's Guidance on Information Requirements and Chemical Safety Assessment Part C: PBT/vPvB Assessment (v 3.0, June 2017).

Toxicity:

The data collated for this substance indicates that the substance does not meet the criteria for aquatic toxicity:

Invertebrate: 48 h EC50 421 mg/L (Minderhout and Krueger, 2008)

Fish: 96 h NOEC > 100 mg/L (Sipos, 2018)

Freshwater algae: 72 h EC10 (growth rate and yield) >100 mg/L (Schuster, 2018)

Likely routes of exposure:

Not required as the substance is not PBT or vPvB.