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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 250-317-5 | CAS number: 30737-19-0
- 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
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 28 days
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Justification for type of information:
- Performed to guideline studies 2017 with GLP
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- GLP compliance:
- yes (incl. QA statement)
- Specific details on test material used for the study:
- Identification:
chromium oxalate
Physical state/Appearance:
dark green powder
Batch:
Z-09-2715
Purity:
98%
Expiry Date:
17 January 2018
Storage Conditions:
room temperature in the dark - Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Initial conc.:
- ca. 31 mg/L
- Based on:
- test mat.
- Initial conc.:
- ca. 10 mg/L
- Based on:
- DOC
- Details on study design:
- Study run for 28 days, with acid purge on Day 29 to displace remaining CO2
- Reference substance:
- benzoic acid, sodium salt
- Key result
- Parameter:
- % degradation (CO2 evolution)
- Value:
- ca. 5
- Sampling time:
- 6 d
- Key result
- Parameter:
- % degradation (CO2 evolution)
- Value:
- ca. 22
- Sampling time:
- 10 d
- Key result
- Parameter:
- % degradation (CO2 evolution)
- Value:
- ca. 29
- Sampling time:
- 29 d
- Results with reference substance:
- Valid, acheiving 60 % in 10-day period
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- inherently biodegradable
- Conclusions:
- Although it was concluded that the substance is not readily biodegrable, it is possible that solublity could have played a part in distorting the results. Oxalic acid and fully water soluble salts of oxalic acid are readily biodegradable and this result was unexectadly low.
It is concluded that the solublity of the material in the test system had an impact on the rate of biodegradation as thre is good evidence of oxalic acid being readily biodegradable. Oxalic acid is found in biological systems and will readily metabolise. - Executive summary:
Although the substance is clearly very soluble in water at high concentrations, observations from ecotoxicity and biodegradation testing suggest that at low concentrations (10 - 100 mg/l) in hardened water, there is a precipitation. This is very likely chromium carbonate or calcium oxalate which are themselves sparingly soluble in water. (The reported solubility for calcium oxalate is ca 0.25 mg/l)
Therefore, under natural environmental conditions, it is likely that there is full dissociation and potential formation of other salts.
Reference
Visual observations were made of the test media during the course of the study. At the start of the test, there was undissolved test material visible, but as the test progressed, less was apparent. However it is not clear as to whether this was due to dissolution or due to settling out of undissolved material.
Description of key information
Although only slow biodegradation was seen at the concentrations tested, the precipitation of oxalate as a highly insoluble calcium salt will have led to a low level of bioavailability.
Key value for chemical safety assessment
- Biodegradation in water:
- inherently biodegradable, not fulfilling specific criteria
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.