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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Classification & Labelling & PBT assessment

PBT assessment

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Administrative data

PBT assessment: overall result

PBT status:
the substance is not PBT / vPvB

The PBT assessment for C9AS Na (CAS 1072 -15 -7) is based on criteria set out in the "Guidance on information requirement 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 read-across studies using standardized test guidelines are available for C9AS Na (CAS 1072-15-7) that could demonstrate the ready biodegradability of the substance (92% biodegradation after 30 days based on O2 demand, OECD 301 D). Therefore, C9AS Na (CAS 1072-15-7) does not meet the Persistent (P) or very Persistent (vP) criteria.


Bioaccumulation (B) Assessment:

The value of log Pow was determined to be 0.22. The available data indicates that C9AS Na (CAS 1072-15-7) has a very low potential for bioconcentration and the substance will not accumulate to significant levels in the aquatic environment. Therefore, C9AS Na (CAS 1072-15-7) 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 NOEC values were 1.357 mg/L based on chronic experimental data with fish and 1.4 mg/L based on aquatic invertebrates. These values exceed the toxicity criterion and therefore, CAS C9AS Na (CAS 1072-15-7) is not considered as a toxic substance regarding ecotoxicological endpoints.

Human Health Toxicity:

Carcinogenicity: the available data on C9AS Na (CAS 1072-15-7) do not warrant classification for carcinogenicity under Directive 67/548/EEC or GHS/CLP.

Mutagenicity: the available data indicate that C9AS Na (CAS 1072-15-7) 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 C9AS Na (CAS 1072-15-7) 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, C9AS Na (CAS 1072-15-7) 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.