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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Bioaccumulation: aquatic / sediment

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Administrative data

Link to relevant study record(s)

Description of key information

The BCF value is from the U.S. Environmental Protection Agency EPI-Suite QSAR model, BCFBAF. 

Key value for chemical safety assessment

BCF (aquatic species):
3.162 L/kg ww

Additional information

The EPI Suite (Q)SAR model from the U.S. Environmental Protection Agency estimates the bioaccumulation potential of HCN to be low (BCF = 3.162 L/kg ww).

The review paper by Callahan et al. (1979) states "there is little potential for bioaccumulation of hydrogen cyanide."

According to Annex IV of Regulation (EC) No. 1272/2008, hydrogen cyanide and its sodium and potassium salts are not classified as PBTs.