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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
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EC number: 425-950-7 | CAS number: 187393-00-6
- 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
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Sediment toxicity
Administrative data
Link to relevant study record(s)
Description of key information
See discussion.
Key value for chemical safety assessment
Additional information
A method to derive environmental quality standards for soil or sediment from aquatic toxicity data and partitioning coefficients is the socalled equilibrium partitioning method (EqP-method). According to van Beelen et al. transformation of aquatic no effect concentrations to sediment concentrations can be expressed as log NOECsediment = Log NOECwater - 3 + log Kp (van Beelen P, Verbruggen EM, Peijnenburg WJ."The evaluation of the equilibrium partitioning method using sensitivity distributions of species in water and soil." Chemosphere. 2003 Aug;52,7:1153-62.). The Kp for organic compounds is normalized for the fraction of organic carbon in sediment (foc) in relation to the Koc: Kp = foc x Koc. The aquatic NOEC is expressed in ug/L while the resulting NOEC is expressed in mg/kg. For standard sediment the foc is 11.6%. Logaritmic transformation gives the following equation for standard sediment: Kp standard sediment = log Koc - 1.935. Based on the key values for Koc the following NOECs for standard sediment can be derived:
Log Koc |
Log Kp |
NOECsediment |
Unit |
5.7 |
3.764 |
4070 |
mg/kg |
6.8 |
4.864 |
51234 |
mg/kg |
This shows that the worst case NOEC is higher than 4070 mg/kg, a concentration far exceeding any possible environmental concentration. This means that there is no risk of environmental concentrations reaching levels toxic to sediment dwelling organisms. Therefore, further testing for sediment toxicity is waived.
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.
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