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Diss Factsheets
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EC number: 231-953-2 | CAS number: 7782-40-3
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Endpoint summary
Administrative data
Description of key information
Additional information
Diamond, covalent cubic crystal structured carbon, is an inorganic solid with a high chemical inertness. It does not noticeably react with oxygen below 600 °C, is completely inert against all known acids and is insoluble in water (see section 4.8 of the IUCLID dossier) and organic solvents. Due to its inherent physical-chemical properties diamond is assumed to show environmental behaviour similar to sand or gravel and not to be bioavailable. Furthermore, diamond is not degradable or biodegradable in water. Diamond does not cross biological membranes. This is supported by the negative results of the studies on acute toxicity to fish (see section 6.1.1 of the IUCLID dossier) and on acute toxicity to daphnia (sees section 6.1.3 of the IUCLID dossier). In both studies the NOEL for diamond was determined to be > 100 mg/L, confirming that diamond does not pose toxicological risks for aquatic organisms. The negative results of an in vitro Cytotoxicity Assay (see section 7.12 of the IUCLID dossier) and the absence of cytotoxic effects in a pre-incubation test (Ames Test) with several Salmonella typhimurium strains (see section 7.6.1 of the IUCLID dossier) performed with an extract of diamond powder (200 g/L) underline the conclusion that diamond is not bioavailable due to its insolubility in water.
Production, handling and use of diamond only take place at a small number of industrial sites without releases of diamond to the environment or to waste water streams under reasonably foreseeable conditions of use. The use pattern of diamond does not indicate significant releases to the environment from products. Therefore, significant exposure of the aquatic compartment is unlikely. Even if accidental exposure of the aquatic compartment occurs, diamond is not bioavailable due to its inherent properties, excluding a toxicological risk for aquatic animals. Due to diamond being insoluble in water, production, handling and use of diamond do not pose a toxicological risk for the aquatic compartment. Furthermore, environmental exposure by diamond in a concentration sufficient to cause adverse effects is impossible under normal or reasonably foreseeable conditions of use.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.