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Registration Dossier
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EC number: 215-222-5 | CAS number: 1314-13-2
Substance identity
Identification
- Display Name:
- Zinc oxide
- EC Number:
- 215-222-5
- EC Name:
- Zinc oxide
- CAS Number:
- 1314-13-2
- Molecular formula:
- ZnO
- IUPAC Name:
- oxozinc
Type of Substance
- Composition:
- mono-constituent substance
- Origin:
- inorganic
Substance Identifiers open all close all
caswellno920
(No other type specified)
Compositions
Boundary Composition(s) open all close all
- State Form:
- solid: particulate/powder
Constituent 1
- Reference substance name:
- Zinc oxide
- EC Number:
- 215-222-5
- EC Name:
- Zinc oxide
- CAS Number:
- 1314-13-2
- Molecular formula:
- ZnO
- IUPAC Name:
- oxozinc
Impurity
| Impurity |
- State Form:
- solid: particulate/powder
- Degree of purity:
- >= 95 - < 99.7 % (w/w)
Constituent 1
- Reference substance name:
- Zinc oxide
- EC Number:
- 215-222-5
- EC Name:
- Zinc oxide
- CAS Number:
- 1314-13-2
- Molecular formula:
- ZnO
- IUPAC Name:
- oxozinc
Impurity 1
- Reference substance name:
- Lead monoxide
- EC Number:
- 215-267-0
- EC Name:
- Lead monoxide
- CAS Number:
- 1317-36-8
- Molecular formula:
- OPb
- IUPAC Name:
- lead monoxide
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Zinc oxide
- EC Number:
- 215-222-5
- EC Name:
- Zinc oxide
- CAS Number:
- 1314-13-2
- Molecular formula:
- ZnO
- IUPAC Name:
- oxozinc
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- Zinc oxide nano with and without hydrophilic surface treatment
Cross-referenceopen allclose all
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 4.7 - <= 38 nm
- Percentile:
- D50
- Range:
- >= 8.9 - <= 96.6 nm
- Percentile:
- D90
- Range:
- >= 16.1 - <= 175.7 nm
- Additional information:
- All materials in this group are identified as nanomaterials by the REACH definition, and are all in the spheroidal category.
- Fraction of constituent particles in the size range 1-100 nm:
- >= 90 - <= 100 %
Crystallinity
Structures
- Structure:
- crystalline
- Name:
- wurtzite
- Pure structure:
- yes
- Crystal system:
- hexagonal
- Description:
- The zinc oxide nanos in this group have a hexagonal crystal system and a P6(3)mc (nr = 186) space group.
Specific surface area
- Range of specific surface area:
- >= 10 - <= 100 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- yes
Surface treatments
- Surface treatment name:
- hydrophilic coating
Surface treatment
- Order:
- #1
- External layer:
- hydrophilic
- Description:
- Only three of the nanos have a hydrophilic coating. The hydrophilic coatings which were used were hydrated silica for one of the nanos and aminosilanes for two of the nanos.
The rest of the nanos in this group are uncoated and do not have any additional surface treatment.
DESCRIBE THE PROCESS BEHIND THE SURFACE FUNCTIONALISATION / TREATMENT:
- Main features of the surface treatment/functionalisation process: ZnO-nano is produced by pyrometallurgical (or high temperature) processes:
• Solid zinc bearing material is fed continuously into a plasma furnace at very high temperature
• Zinc is vaporized in the furnace, and is oxidised in the gasphase forming nano-ZnO
• After cooling, the nano-ZnO is caught in a closed chamber, from where it is transferred to specialized packaging units.
From the entrance of the zinc bearing material (e.g.: zinc metal, Zn powder, ZnO powder…) into the system until the collection (in specialized installation) of the nano-powder at the end of the manufacturing line, the process is entirely enclosed.
ZnO-nano can also be produced by wet chemical process
For the nanos with a surface treatment, a hydrophilic coating is then applied to facilitate the integration/mixing of the substance in the final application. - Percentage of coverage of particle surface, %:
- >= 20 - < 100
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Zinc oxide
- EC Number:
- 215-222-5
- EC Name:
- Zinc oxide
- CAS Number:
- 1314-13-2
- Molecular formula:
- ZnO
- IUPAC Name:
- oxozinc
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- Zinc oxide nano - hydrophobic surface treatment
Cross-referenceopen allclose all
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 5.8 - <= 34.2 nm
- Percentile:
- D50
- Range:
- >= 12.9 - <= 70.8 nm
- Percentile:
- D90
- Range:
- >= 27 - <= 117.4 nm
- Additional information:
- All materials in this group are identified as nanomaterials by the REACH definition, and are all in the spheroidal category.
- Fraction of constituent particles in the size range 1-100 nm:
- >= 90 - <= 100 %
Crystallinity
Structures
- Structure:
- crystalline
- Name:
- wurtzite
- Pure structure:
- yes
- Crystal system:
- hexagonal
- Description:
- The zinc oxide nanos in this group have a hexagonal crystal system and a P6(3)mc (nr = 186) space group.
Specific surface area
- Range of specific surface area:
- >= 10 - <= 51 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- no
Surface treatments
- Surface treatment name:
- Silanes
Surface treatment
- Order:
- #1
- External layer:
- hydrophobic
- Description:
- DESCRIPTION
All of the nanos have a hydrophobic coating, to include: triethoxycaprylylsilane, dimethicone, dimethoxydiphenylsilanetriethoxycaprylylsilane polymer or triethoxyoctylsilane.
DESCRIBE THE PROCESS BEHIND THE SURFACE FUNCTIONALISATION / TREATMENT:
- Main features of the surface treatment/functionalisation process: ZnO-nano is produced by pyrometallurgical (or high temperature) processes:
• Solid zinc bearing material is fed continuously into a plasma furnace at very high temperature
• Zinc is vaporized in the furnace, and is oxidised in the gasphase forming nano-ZnO
• After cooling, the nano-ZnO is caught in a closed chamber, from where it is transferred to specialized packaging units.
From the entrance of the zinc bearing material (e.g.: zinc metal, Zn powder, ZnO powder…) into the system until the collection (in specialized installation) of the nano-powder at the end of the manufacturing line, the process is entirely enclosed.
ZnO-nano can also be produced by wet chemical process
A hydrophobic coating is then applied to facilitate the integration/mixing of the substance in the final application. - Percentage of coverage of particle surface, %:
- >= 20 - <= 100
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Zinc oxide
- EC Number:
- 215-222-5
- EC Name:
- Zinc oxide
- CAS Number:
- 1314-13-2
- Molecular formula:
- ZnO
- IUPAC Name:
- oxozinc
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- Zinc oxide nano with and without hydrophilic surface treatment
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 4.7 - <= 38 nm
- Percentile:
- D50
- Range:
- >= 8.9 - <= 96.6 nm
- Percentile:
- D90
- Range:
- >= 16.1 - <= 175.7 nm
- Additional information:
- All materials in this group are identified as nanomaterials by the REACH definition, and are all in the spheroidal category.
- Fraction of constituent particles in the size range 1-100 nm:
- >= 90 - <= 100 %
Crystallinity
Structures
- Structure:
- crystalline
- Name:
- wurtzite
- Pure structure:
- yes
- Crystal system:
- hexagonal
- Description:
- The zinc oxide nanos in this group have a hexagonal crystal system and a P6(3)mc (nr = 186) space group.
Specific surface area
- Range of specific surface area:
- >= 10 - <= 100 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- yes
Surface treatments
- Surface treatment name:
- hydrophilic coating
Surface treatment
- Order:
- #1
- External layer:
- hydrophilic
- Description:
- Only three of the nanos have a hydrophilic coating. The hydrophilic coatings which were used were hydrated silica for one of the nanos and aminosilanes for two of the nanos.
The rest of the nanos in this group are uncoated and do not have any additional surface treatment.
DESCRIBE THE PROCESS BEHIND THE SURFACE FUNCTIONALISATION / TREATMENT:
- Main features of the surface treatment/functionalisation process: ZnO-nano is produced by pyrometallurgical (or high temperature) processes:
• Solid zinc bearing material is fed continuously into a plasma furnace at very high temperature
• Zinc is vaporized in the furnace, and is oxidised in the gasphase forming nano-ZnO
• After cooling, the nano-ZnO is caught in a closed chamber, from where it is transferred to specialized packaging units.
From the entrance of the zinc bearing material (e.g.: zinc metal, Zn powder, ZnO powder…) into the system until the collection (in specialized installation) of the nano-powder at the end of the manufacturing line, the process is entirely enclosed.
ZnO-nano can also be produced by wet chemical process
For the nanos with a surface treatment, a hydrophilic coating is then applied to facilitate the integration/mixing of the substance in the final application. - Percentage of coverage of particle surface, %:
- >= 20 - < 100
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Zinc oxide
- EC Number:
- 215-222-5
- EC Name:
- Zinc oxide
- CAS Number:
- 1314-13-2
- Molecular formula:
- ZnO
- IUPAC Name:
- oxozinc
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- Zinc oxide nano - hydrophobic surface treatment
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 5.8 - <= 34.2 nm
- Percentile:
- D50
- Range:
- >= 12.9 - <= 70.8 nm
- Percentile:
- D90
- Range:
- >= 27 - <= 117.4 nm
- Additional information:
- All materials in this group are identified as nanomaterials by the REACH definition, and are all in the spheroidal category.
- Fraction of constituent particles in the size range 1-100 nm:
- >= 90 - <= 100 %
Crystallinity
Structures
- Structure:
- crystalline
- Name:
- wurtzite
- Pure structure:
- yes
- Crystal system:
- hexagonal
- Description:
- The zinc oxide nanos in this group have a hexagonal crystal system and a P6(3)mc (nr = 186) space group.
Specific surface area
- Range of specific surface area:
- >= 10 - <= 51 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- no
Surface treatments
- Surface treatment name:
- Silanes
Surface treatmentopen allclose all
- Order:
- #2
- Order:
- #1
- External layer:
- hydrophobic
- Description:
- DESCRIPTION
All of the nanos have a hydrophobic coating, to include: triethoxycaprylylsilane, dimethicone, dimethoxydiphenylsilanetriethoxycaprylylsilane polymer or triethoxyoctylsilane.
DESCRIBE THE PROCESS BEHIND THE SURFACE FUNCTIONALISATION / TREATMENT:
- Main features of the surface treatment/functionalisation process: ZnO-nano is produced by pyrometallurgical (or high temperature) processes:
• Solid zinc bearing material is fed continuously into a plasma furnace at very high temperature
• Zinc is vaporized in the furnace, and is oxidised in the gasphase forming nano-ZnO
• After cooling, the nano-ZnO is caught in a closed chamber, from where it is transferred to specialized packaging units.
From the entrance of the zinc bearing material (e.g.: zinc metal, Zn powder, ZnO powder…) into the system until the collection (in specialized installation) of the nano-powder at the end of the manufacturing line, the process is entirely enclosed.
ZnO-nano can also be produced by wet chemical process
A hydrophobic coating is then applied to facilitate the integration/mixing of the substance in the final application. - Percentage of coverage of particle surface, %:
- >= 20 - <= 100
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Zinc oxide
- EC Number:
- 215-222-5
- EC Name:
- Zinc oxide
- CAS Number:
- 1314-13-2
- Molecular formula:
- ZnO
- IUPAC Name:
- oxozinc
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- ca. 31 - ca. 35 nm
- Percentile:
- D50
- Range:
- ca. 41 - ca. 46 nm
- Percentile:
- D90
- Range:
- ca. 59 - ca. 70 nm
- Fraction of constituent particles in the size range 1-100 nm:
- ca. 100 %
Crystallinity
Structures
- Structure:
- crystalline
- Name:
- Wirtzute
- Pure structure:
- yes
- Crystal system:
- hexagonal
Specific surface area
- Range of specific surface area:
- > 20 - < 40 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Zinc oxide
- EC Number:
- 215-222-5
- EC Name:
- Zinc oxide
- CAS Number:
- 1314-13-2
- Molecular formula:
- ZnO
- IUPAC Name:
- oxozinc
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- ca. 31 - ca. 35 nm
- Percentile:
- D50
- Range:
- ca. 41 - ca. 46 nm
- Percentile:
- D90
- Range:
- ca. 59 - ca. 70 nm
- Fraction of constituent particles in the size range 1-100 nm:
- ca. 100 %
Crystallinity
Structures
- Structure:
- crystalline
- Name:
- Wirtzute
- Pure structure:
- yes
- Crystal system:
- hexagonal
Specific surface area
- Range of specific surface area:
- > 20 - < 40 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- yes
Surface treatments
- Surface treatment name:
- triethoxy caprylyl silane
Surface treatment
- Order:
- #1
- External layer:
- hydrophobic
- Percentage of coverage of particle surface, %:
- > 100