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Environmental fate & pathways

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Ready biodegradability tests for several alkyl sulfates are available. Based on the results of screening tests for biodegradation in water it can be concluded that alkyl sulfates with carbon chain length of C8-C18 are readily biodegradable according to OECD criteria (OECD SIDS 2007).

Since no reliable biodegradability tests are available for C8-18AS Mg & TEA (CAS 85586-38-5), in accordance to Regulation (EC) No. 1907/2006 Annex XI, 1.5 a read-across to another structurally related category members was conducted. Read-across studies proving ready biodegradation of the following category members were used: C8AS Na (CAS 142-31-4), C10AS Na (CAS 142-87-0), C12AS Na (CAS 151-21-3), C14AS Na (CAS 1191-50-0), C16-18AS Na (CAS 68995-20-4), C18AS Na (CAS 68140-10-3) and C12-18AS Na (CAS 68955-19-1). Due to structural and property similarities with the tested category members it can be concluded that the above results apply also to C8-18AS Mg & TEA (CAS 85586-38-5). The substance can be considered as readily biodegradable according to OECD criteria.