Registration Dossier
Registration Dossier
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EC number: 238-877-9 | CAS number: 14807-96-6
Endpoint summary
Administrative data
Description of key information
TERRESTRIAL FATE:
Talc (Mg3H2(SiO3)4) when released into the environment is expected to combine indistinguishably with the soil or sediment due to the similarity with inorganic soil/sediment matter and will be subjected to natural processes under environmental conditions (cation exchange, dissolution, sedimentation). It is therefore considered to be essentially a fraction of soil already.
Talc (Mg3H2(SiO3)4) in this case, is regarded as an inert substance and is not expected to undergo any transformation in the atmospheric or terrestrial compartment, apart from dissolution by water.
DissolvedTalc (Mg3H2(SiO3)4)(in the form of monosilicic acid) can be actively assimilated by some marine and terrestrial organisms as normal natural processes mainly related to structural function.
Talc (Mg3H2(SiO3)4) occurs naturally in abundance in the environment at much greater levels than would be expected from manufacture, use or disposal of Talc (Mg3H2(SiO3)4). Based on available data,Talc (Mg3H2(SiO3)4) presents a low risk for adverse effects to the environment.
It is not expected forTalc (Mg3H2(SiO3)4)to be toxic to creatures in the soil or to those who graze on the land. It is not expected to be toxic to birds.
Based on estimated Koc value of 31.82 L/kg, indicates that Talc (Mg3H2(SiO3)4) is expected to have very high mobility in soil.
Volatilization of Talc (Mg3H2(SiO3)4) from moist soil surfaces is not expected to be an important fate process given a estimated Henry's Law constant of 5.54E-029 atm-m3/mole (5.613E-024 Pa-m3/mole) . The estimated Henrys Law Constant (25 deg C) measured by calculation from EPI SuiteTM v4.1, HENRYWIN v3.20 Program was 5.54E-029 atm-m3/mole , which is almost zero.
Volatilization of Talc (Mg3H2(SiO3)4) from water surfaces is not an important fate process because these compounds are ionic and will not volatilize.
Additional information
TERRESTRIAL FATE:
Talc (Mg3H2(SiO3)4) when released into the environment is expected to combine indistinguishably with the soil or sediment due to the similarity with inorganic soil/sediment matter and will be subjected to natural processes under environmental conditions (cation exchange, dissolution, sedimentation). It is therefore considered to be essentially a fraction of soil already.
Talc (Mg3H2(SiO3)4) in this case, is regarded as an inert substance and is not expected to undergo any transformation in the atmospheric or terrestrial compartment, apart from dissolution by water.
Dissolved Talc (Mg3H2(SiO3)4) (in the form of monosilicic acid) can be actively assimilated by some marine and terrestrial organisms as normal natural processes mainly related to structural function.
Talc (Mg3H2(SiO3)4) occurs naturally in abundance in the environment at much greater levels than would be expected from manufacture, use or disposal ofTalc (Mg3H2(SiO3)4). Based on available data,Talc (Mg3H2(SiO3)4)presents a low risk for adverse effects to the environment.
It is not expected forTalc (Mg3H2(SiO3)4)to be toxic to creatures in the soil or to those who graze on the land. It is not expected to be toxic to birds.
Based on estimated Koc value of 31.82 L/kg, indicates that Talc (Mg3H2(SiO3)4) is expected to have very high mobility in soil.
Volatilization of Talc (Mg3H2(SiO3)4) from moist soil surfaces is not expected to be an important fate process given a estimated Henry's Law constant of 5.54E-029 atm-m3/mole (5.613E-024 Pa-m3/mole) . The estimated Henrys Law Constant (25 deg C) measured by calculation from EPI SuiteTM v4.1, HENRYWIN v3.20 Program was 5.54E-029 atm-m3/mole , which is almost zero.
Volatilization of Talc (Mg3H2(SiO3)4) from water surfaces is not an important fate process because these compounds are ionic and will not volatilize.
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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