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Classification & Labelling & PBT assessment

PBT assessment

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PBT assessment: overall result

PBT status:
the substance is not PBT / vPvB

Criteria for assessing PBT properties are defined in Annex XIII, REACH Regulation (EC) No. 1907/2006. Further details are laid down in ECHA REACH Guidance on Information Requirements and Chemical Safety Assessment; Chapter R.11: PBT Assessment (May 2008). The assessment of PBT / vPvB properties is based upon a separate assessment for each parameter (i.e. P or vP, B or vB and T). Substances are only assigned as PBT or vPvB when they fulfill the criteria for all three properties (persistency, bioaccumulation and toxicity in case of PBT substance) or both criteria (i.e. very persistent and very bioaccumulative) in case of vPvB, respectively.

Experimental results from different read-across source substances were taken into account to complete the PBT/vPvB assessment for the sodium sulfonate target substance (benzenesulfonic acid, di-C10-14-alkyl derivs., sodium salts). Thus, the same conclusions regarding PBT properties are drawn for the registered substance. In the following, the read across procedure is not mentioned separately, however, the assessment applies to benzenesulfonic acid, di-C10-14-alkyl derivs., sodium salts as well as to all read-across taken into account.

Due to results of ready-biodegradability tests, the read across source substance, calcium sulfonate target substance (C10-C14) is considered as persistent (P), but not very persistent (not vP). The B criterion (bioaccumulative substance) is not fulfilled, due to the predicted logPow of > 8 (estimated with KOWWIN v1.68, logPow: 8.8) and predicted Bioconcentration factor (BCF) below the trigger value of 2000 L/kg (70.79 L/kg). Due to the lack of toxicity observed in ecotoxicity studies, also the T criterion is not fulfilled. Furthermore, no classification exists as carcinogenic, mutagenic or toxic for reproduction according to Regulation (EC) No. 1272/2008. The test substance is neither classified as STOT RE category 1 or 2 so far. As conclusion, benzenesulfonic acid, di-C10-14-alkyl derivs., sodium salts fulfill only one relevant criterion (Persistency). Therefore, making all allowances for regulatory parameters available, the target substance is neither PBT nor vPvB.