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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 910-853-9 | CAS number: 8011-63-0
- 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
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- (Q)SAR
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- accepted calculation method
- Justification for type of information:
- Bordeaux mixture is a multicomponent substance with variable amounts of water of crystallisation. An endothermic event seen to occur over the range 110 to 190°C in a melting/boiling point study (O'Connor and Mullee, 2003); Safepharm Project Number 1510/003) was attributed to the loss of water of crystallisation. Using the extrapolated onset of this endotherm (approximately 140°C), the vapour pressure associated with the entrained water was calculated by an integrated form of the modified Watson correction to be 614 Pa. (The Watson correction method is identified in REACH guidance as being suitable for substances with vapour pressures in the range 10E+05 Pa to 10E-05 Pa; Chapter R.7a: Endpoint specific guidance, Version 6.0 – July 2017). As an absolute worst case, therefore, this value of 614 Pa is reported as the vapour pressure of Bordeaux mixture in its hydrated state. For practical purposes, however, and given the high melting/boiling points of the remaining components of Bordeaux mixture, it is considered that the vapour pressure of the substance in the absence of water of crystallisation is too low to accurately measure experimentally.
Based on the above determination, it is concluded for the purposes of classification and risk assessment that the vapour pressure of Bordeaux mixture is very low and that the substance should be regarded as non-volatile.
Computer software was not used in this determination. See "Any other information on results" for a further discussion on the approach taken.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- other: The assessment carried out was intended to be compatible with Method A4 Vapour Pressure of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 104 of the OECD Guidelines for Testing of Chemicals, 23 March 2006.
Test material
- Reference substance name:
- calcium tetracopper(2+) dioxocopperbis(olate) hexahydroxide sulfate
- EC Number:
- 910-853-9
- Cas Number:
- 8011-63-0
- Molecular formula:
- Ca3Cu4H6O22S4.nH2O where n = 1 to 6
- IUPAC Name:
- calcium tetracopper(2+) dioxocopperbis(olate) hexahydroxide sulfate
Constituent 1
- Specific details on test material used for the study:
- Bordeaux mixture is a reaction mass of calcium sulfate and tetracopper hexahydroxide sulfate(3:1) with a variable degree of hydration. The molecular formula is as follows:Cu4(OH6)SO4.3CaSO4.nH2O (where n = 1 to 6).
Results and discussion
Vapour pressure
- Key result
- Vapour pressure:
- <= 614 Pa
- Remarks on result:
- other: The vapour pressure of Bordeaux mixture in its hydrated state was calculated by an integrated form of the modified Watson correction.
- Remarks:
- The vapour pressure of the dehydrated components would be extremely low at 25°C and would be difficult to measure accurately.
Any other information on results incl. tables
Based on data from the boiling point test of Safepharm Project Number 1510/003, the test item had an endothermic event over the range approximately 110 to 190 °C. This event was considered to be the temperature at which the test item was dehydrated (loss of water of crystallisation). Using the extrapolated onset of this endotherm (approximately 140°C), the vapour pressure was calculated by an integrated form of the modified Watson correction to be 614 Pa (0.0061 atm). This is in contrast to the vapour pressure of pure water at 25 °C of approximately 3169 Pa (0.031 atm). The vapour pressure of entrained water is significantly lower than the pure form, hence it requires a higher temperature to volatilize.
As the initial volatilization of the test item was due to loss of the hydrate and there were no definitive thermal events up to 400°C after this, further volatilisation of the test item required the assessment of the components in their dehydrated form. For example, the literature value for the melting point of calcium sulphate is 1460°C. Although a value for tetracopper hexahydroxide sulphate was not available, as a comparison copper (II) sulphate decomposesat 560°C; this suggests that tetracopper hexahydroxide sulphate wouldn’t boil significantly lower than this. However, hydroxides are known to decompose to their respective oxide, for example copper (II) hydroxide. Even so, decomposition would only liberate H2O which would merely contribute to the vaporised hydrate but only then at a higher temperature than140°C.
Therefore, it was considered that the vapour pressure of the dehydrated components would be extremely low at 25°C and would be difficult to measure accurately. The vapour pressure of the test item, as a worst case scenario, needed to be based on the hydrated form for which avalue of 614 Pa was calculated. Overall, the vapour pressure of the test item was considered to be ≤ 614 Pa.
Applicant's summary and conclusion
- Conclusions:
- The vapour pressure of the test item was considered to be ≤ 614 Pa.
- Executive summary:
The vapour pressure of Bordeaux mixture in its hydrated state was calculated by an integrated form of the modified Watson correction to be 614 Pa (0.0061 atm). The vapour pressure of the dehydrated components would be extremely low at 25°C and would be difficult to measure accurately.
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.