Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Adsorption / desorption

In accordance with column 2 of REACH Annexes VIII, IX and X, an adsorption/desorption screening study and further studies do not need to be conducted, because the substance has a low potential for adsorption due to a low octanol-water partition coefficient, and the substance and its relevant degradation products decompose rapidly.

Additional information

Adsorption / desorption

Based on a calculated Koc of 1 (PCKoc v1.66), 1,3 -butanediol is expected to have high mobility in soil (ECT, 2008).

Henry's Law constant / Other distribution data

The Henry's Law constant (HLC) was estimated to be 0.0233 Pa*m³/mol at 25 °C. Taking this value, volatilization half-lives of 101 and 1102 days were estimated by EPIWIN v3.20 for a model river and a model lake, respectively (ECT, 2008)