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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Diss Factsheets

Environmental fate & pathways

Adsorption / desorption

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Administrative data

Link to relevant study record(s)

Description of key information

From the two studies provided for this endpoint it is expected that Guerbet alcohols, C24-26, branched and cyclic will be immobile in soils and sediment. However, according to a ready biodegradation study of Flach (2014) Guerbet alcohols, C24-26, branched and cyclic is readily biodegradable.
In conclusion, whilst the substance may adsorb readily to sediment, sludge and soil, it will rapidly degrade. In addition, where a substance does sorb to sediment or soil, the substance will be readily degraded as it desorbs.Based on the evidence in section 5.2, Guerbet alcohols, C24-26, branched and cyclic is readily biodegradable and unlikely to persist in the environment.

Key value for chemical safety assessment

Additional information

Annex IX of REACH includes, under Column 1 of Section 9.3.3, a requirement for further information on adsorption/desorption depending on the results of the study required in Annex VIII (adsorption/desorption screening study). Under Column 2 of the same Annex, the specific rules for adaptation states that these testing requirements may be waived when, inter alia, the substance and its degradation products decompose rapidly. From the two studies of structurally related Guebet alcohols provided for this endpoint it is expected that Guerbet alcohols, C24-26, branched and cyclic will be immobile in soils and sediment. However, Guerbet alcohols, C24-26, branched and cyclic is readily biodegradable shown in a study according to OECD Guideline 301B. In conclusion, whilst Guerbet alcohols, C24-26, branched and cyclic may adsorb readily to sediment, sludge and soil, it will rapidly degrade. In addition, where a substance does sorb to sediment or soil, the substance will be readily degraded as it desorbs. Based on the evidence in section 5.2, Guerbet alcohols, C24-26, branched and cyclic is readily biodegradable and unlikely to persist in the environment.