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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 231-157-5 | CAS number: 7440-47-3
- 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
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Chromium is highly insoluble as demonstrate in the T/D test as a consequence: chromium (III) produces soluble (bio)available ionic and other chromium-bearing species in environmental media is limited. The insolubility of chromium (III) is expected to determine its behavior, its fate in the environment, and subsequently its ecotoxicity potency.
In accordance with ECHA’s Guidance on IR & CSA, Appendix R.7.13-2 (2008), the substance can be evaluated by comparing the dissolved chromium (III) ion level resulting from the T/D at a loading rate of:
- 100 mg/L after 24-h, 7-days (for acute toxicity) or
- 1 mg/L after 28-days (for chronic toxicity)
with the lowest chronic effect concentration as determined for the (soluble) chromium (III) ion.
The lowest reliable acute and chronic effect concentrations determined for the (soluble) chromium (III) ion are a 72 h ErC50 > 148.1 µg Cr (III) /L and a 72 h ErC10 of 2 µg Cr (III) /L observed in a growth inhibition test for the effects of chromium (III) hydroxide sulphate (more soluble form) on freshwater algae Desmodesmus subspicatus (Neuhahn, 2010). Dissolved chromium concentrations of <0.01 µg/L in the T/D after 7 and 28-Days at pH 6 (i.e. the pH that maximizes the dissolution) are significantly lower than the lowest reliable acute effect concentration derived for algae (i.e. EC50 > 0.148.1 mg Cr (III) /L) and the lowest reliable chronic effect concentration derived for algae (i.e. ErC10 of 2.0 µg Cr (III) /L). Hence, chromium (III) is not sufficiently soluble in environmental media to cause chronic toxicity to algae / cyanobacteria at the level of the lowest chronic effect concentration (expressed as the NOEC).
According to this data, no toxicity on algae / cyanobacteria is expected.
makes its ecotoxicity very unlikely and also the testing of the environmental degradation and ecotoxicity mainly scientifically unjustified. The lack of endpoint data from metallic chromium does not allow the derivation of PNECs.
Key value for chemical safety assessment
Additional information
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.