Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 701-307-9 | CAS number: -
- 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
Cubic boron nitride is an inorganic solid with a highchemical inertness. It does not noticeably react with oxygen, 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 cBN is assumed to show environmental behaviour similar to sand or gravel and not to be bioavailable. Furthermore, cBN is not degradable or biodegradable in water. Cubic Boron Nitride 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 cBN was determined to be > 100 mg/L, confirming that cBN 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 cBN powder (200 g/L) underline the conclusion that cBN is not bioavailable due to its insolubility in water.
Production, handling and use of cBN only take place at a small number of industrial sites without releases of cBN to the environment or to waste water streams under reasonably foreseeable conditions of use. The use pattern of cBN 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, cBN is not bioavailable due to its inherent properties, excluding a toxicological risk for aquatic animals. Due to cBN being insoluble in water, production, handling and use of cBN do not pose a toxicological risk for the aquatic compartment. Furthermore, environmental exposure by cBN 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.