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Classification & Labelling & PBT assessment

PBT assessment

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Administrative data

PBT assessment: overall result

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Name:
BC_non nano
Type of composition:
boundary composition of the substance
State / form:
solid: particulate/powder
Reference substance:
BC_non nano
Name:
BC_set_not treated
Type of composition:
boundary composition of the substance
State / form:
solid: nanoform
Reference substance:
BC_set_not treated
Type of information reported:
set of nanoforms
Name of set of nanoforms:
No surface treatment
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_not treated
Shape category:
spheroidal
Shape:
spherical
Pure shape:
yes
Range:
100 %
Shape category:
spheroidal
Percentile:
D10
Range:
> 6 - < 71 nm
Percentile:
D50
Range:
> 7 - < 101 nm
Percentile:
D90
Range:
> 21 - < 188 nm
Additional information:
Carbon black is an engineered material, primarily composed of elemental carbon, obtained from the partial combustion or thermal decomposition of hydrocarbons. It exists as aggregates of aciniform morphology (i.e. shaped like a cluster of grapes) which are composed of spheroidal primary particles. While the fundamental building block of carbon black is the primary particle, these never exist in isolation, but are strongly fused by covalent bonds into aggregate. The primary particles are thus conceptual in nature since once the aggregate is formed the primary particles no longer exist as discrete entities and have no physical boundaries among them. Once produced, individual aggregates join together by van der Waals forces to form agglomerates. Agglomerates do not break down into smaller components unless adequate force is applied (for example, shear force). Primary particle and aggregate sizes are distributional properties and vary depending on the carbon black grade. Transmission electron micrographs demonstrate that while primary particle and aggregate sizes vary greatly within a given grade of carbon black, the primary particle size is essentially uniform within an individual aggregate.
Fraction of constituent particles in the size range 1-100 nm:
>= 50 - <= 100 %
Structure:
amorphous
Name:
amorphous carbon black
Pure structure:
yes
Range:
100 %
Crystal system:
not applicable
Range of specific surface area:
ca. 18 - ca. 1 200 m²/g
Surface treatment applied:
no
Does the set contain both treated and non-surface treated nanoforms?:
no
Name:
BC_set_treated
Type of composition:
boundary composition of the substance
State / form:
solid: nanoform
Reference substance:
BC_set_treated
Type of information reported:
set of nanoforms
Name of set of nanoforms:
Surface treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Reason / purpose:
justification for reporting set of similar nanoforms
Related information:
BC_set_treated
Shape category:
spheroidal
Shape:
spherical
Pure shape:
yes
Range:
100 %
Shape category:
spheroidal
Percentile:
D10
Range:
> 3 - < 71 nm
Percentile:
D50
Range:
> 7 - < 87 nm
Percentile:
D90
Range:
> 15 - < 178 nm
Additional information:
Post-production, some nanoforms of the set carbon black (solid: nanoform, no surface treatment) are subjected to oxidative after-treatment. The treatment augments the level of already present acidic and polar oxides on the surface of carbon black. These functional groups render these forms more hydrophilic in comparison to the corresponding virgin non-oxidized form; meaning that the carbon black particles becomes better dispersible and wettable in polar solutions but are still completely insoluble. Surface treatment does not affect the morphological features i.e. primary particles, aggregates, and agglomerates of carbon black.
Fraction of constituent particles in the size range 1-100 nm:
>= 50 - <= 100 %
Structure:
amorphous
Name:
amorphous carbon black
Pure structure:
yes
Range:
100 %
Crystal system:
not applicable
Range of specific surface area:
ca. 35 - ca. 600 m²/g
Surface treatment applied:
yes
Does the set contain both treated and non-surface treated nanoforms?:
no
Name:
Carbon Black (solid: particulate/powder)
Type of composition:
legal entity composition of the substance
State / form:
solid: particulate/powder
Related composition:
BC_non nano
Reference substance:
Carbon Black (solid: particulate/powder)
Name:
Carbon Black (solid: nanoform, no surface treatment)
Type of composition:
legal entity composition of the substance
State / form:
solid: nanoform
Related composition:
BC_set_not treated
Reference substance:
Carbon Black (solid: nanoform, no surface treatment)
Type of information reported:
set of nanoforms
Name of set of nanoforms:
No surface treatment
Shape category:
spheroidal
Shape:
spherical
Pure shape:
yes
Range:
100 %
Shape category:
spheroidal
Percentile:
D10
Range:
> 17 - < 61 nm
Percentile:
D50
Range:
>= 30 - < 101 nm
Percentile:
D90
Range:
>= 54 - < 173 nm
Additional information:
Carbon black is an engineered material, primarily composed of elemental carbon, obtained from the partial combustion or thermal decomposition of hydrocarbons. It exists as aggregates of aciniform morphology (i.e. shaped like a cluster of grapes) which are composed of spheroidal primary particles. While the fundamental building block of carbon black is the primary particle, these never exist in isolation, but are strongly fused by covalent bonds into aggregate. The primary particles are thus conceptual in nature since once the aggregate is formed the primary particles no longer exist as discrete entities and have no physical boundaries among them. Once produced, individual aggregates join together by van der Waals forces to form agglomerates. Agglomerates do not break down into smaller components unless adequate force is applied (for example, shear force). Primary particle and aggregate sizes are distributional properties and vary depending on the carbon black grade. Transmission electron micrographs demonstrate that while primary particle and aggregate sizes vary greatly within a given grade of carbon black, the primary particle size is essentially uniform within an individual aggregate.
Fraction of constituent particles in the size range 1-100 nm:
> 57 - <= 99 %
Structure:
amorphous
Name:
amorphous carbon black
Pure structure:
yes
Range:
100 %
Crystal system:
not applicable
Range of specific surface area:
>= 21 - < 1 200 m²/g
Surface treatment applied:
no
Name:
Carbon Black (solid: nanoform, surface-treated)
Type of composition:
legal entity composition of the substance
State / form:
solid: nanoform
Related composition:
BC_set_treated
Reference substance:
Carbon Black (solid: nanoform, surface-treated)
Type of information reported:
set of nanoforms
Name of set of nanoforms:
Surface treated
Shape category:
spheroidal
Shape:
spherical
Pure shape:
yes
Range:
100 %
Shape category:
spheroidal
Percentile:
D10
Range:
> 20 - < 43 nm
Percentile:
D50
Range:
>= 33 - < 87 nm
Percentile:
D90
Range:
>= 55 - < 178 nm
Additional information:
Post-production, some nanoforms of the set carbon black (solid: nanoform, no surface treatment) are subjected to oxidative after-treatment. The treatment augments the level of already present acidic and polar oxides on the surface of carbon black. These functional groups render these forms more hydrophilic in comparison to the corresponding virgin non-oxidized form; meaning that the carbon black particles becomes better dispersible and wettable in polar solutions but are still completely insoluble. Surface treatment does not affect the morphological features i.e. primary particles, aggregates, and agglomerates of carbon black.
Fraction of constituent particles in the size range 1-100 nm:
> 60 - <= 99 %
Structure:
amorphous
Name:
amorphous carbon black
Pure structure:
yes
Range:
100 %
Crystal system:
not applicable
Range of specific surface area:
>= 35 - < 600 m²/g
Surface treatment applied:
yes
Does the set contain both treated and non-surface treated nanoforms?:
no
PBT status:
PBT assessment does not apply
Justification:

Annex XIII sets out the criteria for the identification of persistent, bioaccumulative and toxic (PBT) substances, and very persistent and very bioaccumulative (vPvB) substances; it does not apply to inorganic substances.