Registration Dossier
Registration Dossier
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EC number: 215-266-5 | CAS number: 1317-35-7
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
Adsorption/desorption studies were not conducted as the substance is inorganic.
Key value for chemical safety assessment
- Koc at 20 °C:
- 49 700
Additional information
In accordance with section 2 of REACH Annex XI, the adsorption/desorption screening study, listed under standard information requirement 9.3.1 of Annex VIII and the further information on adsorption/desorption study, listed under standard information requirement 9.3.3 of Annex IX of the same regulation, do not need to be conducted as the studies are technically not feasible to conduct since the substance is inorganic.
The 72hr adsorption/desorption study (OECD 106) on MnCl2 (a more soluble/readily available form of Manganese (Mn2+)) in 35 different soil types illustrate that adsorption is pH sensitive. A median Kd of 994 ml/g was determined for all soil types used (pH range 3.0-8.5).
For the assessment of trimanganese tetraoxide, the Kd median of 994 ml/g was used to calculate a Koc value of 49700.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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