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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Additional information

Adsorption/desorption:

Soil Adsorption Coefficient i.e. Koc value of Benzidine-2,2’-disulphonic acid at 25 deg C was estimated as 584.5 L/kg {Log Koc (2.7668) } by means of MCI method. This indicates that Benzidine-2,2’-disulphonic acid has good adsorption potential to the organic carbon fraction of the soil and shall have slow migration potential to groundwater.Log Koc value at 20 deg C is equivalent to 2.669

Henry's Law constant:

Henry's Law states that at a constant temperature, the amount of a given gas that dissolves in a given type and volume of liquid is directly proportional to the partial pressure of that gas in equilibrium with that liquid.

Henrys Law Constant of Benzidine-2,2’-disulphonic acid at 25 deg C was estimated to be 1.14E-018 Pa m³/mol