Registration Dossier
Registration Dossier
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EC number: 204-812-8 | CAS number: 126-92-1
PBT assessment
Administrative data
PBT assessment: overall result
- PBT status:
- the substance is not PBT / vPvB
- Justification:
The PBT assessment of C8-isoAS Na (CAS 126-92-1) 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). Several studies using standardized test guidelines are available for C8-isoAS Na (CAS 126-92-1) that could all demonstrate the ready biodegradability of the substance (89.35% after 28 days based on CO2 evolution, OECD 301 B). Therefore, C8-isoAS Na (CAS 126-92-1) does not meet the Persistent (P) or very Persistent (vP) criteria.
Bioaccumulation (B) Assessment:
The log Pow value was determined as -0.2476. The available data indicates that C8-isoAS Na (CAS 126-92-1) has a very low potential for bioconcentration and the substance will not accumulate to significant levels in the aquatic environment. Therefore, C8-isoAS Na (CAS 126-92-1) 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 values for aquatic organisms are lower than 0.01 mg/L. The lowet NOEC values were 1.357 mg/L based on chronic experimental data on fish and 1.4 mg/L based on aquatic invertebrates. These values exceed the toxicity criterion and therefore, C8-isoAS Na (CAS 126-92-1) is not considered as a toxic substance regarding ecotoxicological endpoints.
Human Health Toxicity:
Carcinogenicity: the available data on C8-isoAS Na (CAS 126-92-1) do not warrant classification for carcinogenicity under Directive 67/548/EEC or GHS/CLP.
Mutagenicity: the available data indicate that C8-isoAS Na (CAS 126-92-1) 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 C8-isoAS Na (CAS 126-92-1) 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, C8-isoAS Na (CAS 126-92-1) 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.
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