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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

The PBT assessment of C8-10AS Na (CAS 85338-42-7) is based on the criteria set out in the "Guidance on information requirements and chemical safety assessment, Chapter R.11: PBT Assessment" (ECHA, 2008).

Persistence (P) Assessment:

A substance is not considered to be persistent if it can be demonstrated that it has potential to degrade (via photolysis, hydrolysis and/or biodegradation). Two studies using standardized test guidelines are available for CAS 85338-42-7 that could demonstrate the ready biodegradability of the substance (92% biodegradation after 30 days based on O2 demand, OECD 301 D). Therefore, CAS 85338-42-7 does not meet the Persistent (P) or very Persistent (vP) criteria.


Bioaccumulation (B) Assessment:

The value of log Pow was determined to be between -0.27 and 0.96. The available data indicates that CAS 85338-42-7 has a very low potential for bioconcentration and the substance will not accumulate to significant levels in the aquatic environment. Therefore, CAS 85338-42-7 does not meet the Bioaccumulative (B) or very Bioaccumulative (vB) criteria.


Toxicity (T) Assessment:

Environmental Toxicity:

According to Annex XIII of REACH Regulation (EC) No 1907/2006, a substance is considered to be toxic in terms of PBT criteria if long-term NOEC/EC10 values for aquatic organisms are lower than 0.01 mg/L. The lowest chronic value based on experimental data with algae was an EC10 of 1.12 mg/L. This value exceeds the toxicity criterion and therefore, CAS 85338-42-7 is not considered as a toxic substance regarding ecotoxicological endpoints.

Human Health Toxicity:

Carcinogenicity: the available data on CAS 85338-42-7 do not warrant classification for carcinogenicity under Directive 67/548/EEC or GHS/CLP.

Mutagenicity: the available data indicate that CAS 85338-42-7 is not genotoxic or mutagenic and do not warrant classification for carcinogenicity under Directive 67/548/EEC or GHS/CLP.

Reproductive Toxicity: There is no evidence that CAS 85338-42-7 causes reproductive or developmental toxicity. The available data indicate that members of the alkyl sulfate category are not toxic to reproduction and do not warrant classification under Directive 67/548/EEC or GHS/CLP.

Chronic toxicity: due to the results of the relevant mammalian toxicity studies, CAS 85338-42-7 is not classified as Xn, R48 or STOT RE.


The substance is considered not to be PBT or vPvB on the basis of the provided relevant data.