Registration Dossier
Registration Dossier
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EC number: 231-104-6 | CAS number: 7439-95-4
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
According to “ANNEX IX- STANDARD INFORMATION REQUIREMENTS FOR SUBSTANCES MANUFACTURED OR IMPORTED IN QUANTITIES OF 100 TONNES OR MORE , an adsorption study need not be conducted if:
— based on the physicochemical properties the substance can be expected to have a low potential for adsorption (e.g. the substance has a low octanol water partition coefficient), or
— the substance and its degradation products decompose rapidly.
Octanol/Water Partition Coefficient of magnesium is low (log Kow = -0.57)
If released into water, magnesium is not expected to adsorb to suspended solids and sediment based upon the Koc. The Koc of magnesium can be estimated to be 13.22 . This estimated Koc value suggests that Magnesium is expected to have very high mobility in soil.
The estimated Soil Adsorption Coefficient was 13.22 L/kg measured by calculation from EPI SuiteTM v4.1 Program. This is Exposure Assessment Tools and Models made from EPA (Environmental Protection Agency
These results suggest that magnesium has high soil mobility and does not have a high potential for adsorption to soil
KOCWIN Program (v2.00) Results:
SMILES : [Mg]
EC Name: MAGNESIUM
CAS Name: MAGNESIUM
Molecular Formula: Mg
MOL WT : 24.3039
--------------------------- KOCWIN v2.00 Results ---------------------------
Koc Estimate from MCI:
---------------------
First Order Molecular Connectivity Index ........... : 1.000
Non-Corrected Log Koc (0.5213 MCI + 0.60) .......... : 1.1211
Fragment Correction(s) --> NONE : ---
Corrected Log Koc .................................. : 1.1211
Estimated Koc: 13.22 L/kg <===========
Koc Estimate from Log Kow:
-------------------------
Log Kow (Kowwin estimate) ......................... : -0.57
Non-Corrected Log Koc (0.8679 logKow - 0.0004) ..... : -0.4951
Fragment Correction(s) --> NONE : ---
Corrected Log Koc .................................. : -0.4951
Estimated Koc: 0.3198 L/kg <===========
Key value for chemical safety assessment
- Koc at 20 °C:
- 13.22
Other adsorption coefficients
- Type:
- log Kp (solids-water in sediment)
- Value in L/kg:
- 2.82
- at the temperature of:
- 20 °C
Additional information
According to “ANNEX IX- STANDARD INFORMATION REQUIREMENTS FOR SUBSTANCES MANUFACTURED OR IMPORTED IN QUANTITIES OF 100 TONNES OR MORE , an adsorption study need not be conducted if:
— based on the physicochemical properties the substance can be expected to have a low potential for adsorption (e.g. the substance has a low octanol water partition coefficient), or
— the substance and its degradation products decompose rapidly.
Octanol/Water Partition Coefficient of magnesiumis low (log Kow =-0.57)
If released into water,magnesium is not expected to adsorb to suspended solids and sediment based upon the Koc. The Koc of magnesiumcan be estimated to be13.22.This estimated Koc value suggests thatMagnesiumis expected to have very high mobility in soil.
The estimated Soil Adsorption Coefficient was13.22L/kg measured by calculation from EPI SuiteTM v4.1 Program. This is Exposure Assessment Tools and Models made from EPA (Environmental Protection Agency
These results suggest thatmagnesiumhas high soil mobility and does not have a high potential for adsorption to soil
KOCWIN Program (v2.00) Results:
SMILES : [Mg]
EC Name: MAGNESIUM
CAS Name: MAGNESIUM
Molecular Formula: Mg
MOL WT : 24.3039
--------------------------- KOCWIN v2.00 Results ---------------------------
Koc Estimate from MCI:
---------------------
First Order Molecular Connectivity Index ........... : 1.000
Non-Corrected Log Koc (0.5213 MCI + 0.60) .......... : 1.1211
Fragment Correction(s) --> NONE : ---
Corrected Log Koc .................................. : 1.1211
Estimated Koc: 13.22 L/kg <===========
Koc Estimate from Log Kow:
-------------------------
Log Kow (Kowwin estimate) ......................... : -0.57
Non-Corrected Log Koc (0.8679 logKow - 0.0004) ..... : -0.4951
Fragment Correction(s) --> NONE : ---
Corrected Log Koc .................................. : -0.4951
Estimated Koc: 0.3198 L/kg <===========
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