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Diss Factsheets
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EC number: 205-861-8 | CAS number: 156-62-7
- 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
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the melting point is above 300°C
- Endpoint:
- vapour pressure
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Justification for type of information:
- Available experimental vapour pressure data for cyanamide are used in a read-across approach for the environmental assessment of calcium cyanamide.
For detailled description where read across is used/recommended and where it is preferrable to refain from read across, please see section 13.2 "read across justification for environmental endpoints" and "Scientific rationale for not using cyanamide as read-across substance for calcium cyanamide on toxicological endpoints" - Reason / purpose for cross-reference:
- read-across source
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0.51 Pa
- Remarks on result:
- other: 0.51 Pa = 68 mm Hg
- Temp.:
- 25 °C
- Vapour pressure:
- 1 Pa
- Remarks on result:
- other: 1.0 Pa = 133 mm Hg
- Conclusions:
- Cyanamid F1000 vapour pressure:
P20°C = 0.51 Pa = 68 mm Hg
P25°C = 1.0 Pa = 133 mm Hg
The available experimental vapour pressure data for hydrogen cyanamide are used in a read-across approach for the assessment of calcium cyanamide.
Upon dissolution in water calcium cyanamide is fast transformed to hydrogen cyanamide. Thus, upon release of calcium cyanamide via wastewater streams the environmental distribution and exposure is driven by the physico-chemical/fate properties of hydrogen cyanamide. - Executive summary:
The vapour pressure of Cyanamid F1000 was measured by the vapour measure balance method according to the EU method A.4, in 4 different temperatures between 21 and 25.2 °C. The following vapour pressure for Cyanamid F1000 was calculated:
P20°C = 0.51 Pa = 68 mm Hg
P25°C = 1.0 Pa = 133 mm Hg
Referenceopen allclose all
From the data obtained in the assay (the masses of the condensed sample and opening times of the aperture in different temperatures, 21 -25.2°C), a vapour pressure curve was established by plotting the logarithm of the vapour pressure versus the reciprocal temperature. From this plot the vapour pressures for 20 and 25°C were calculated.
Description of key information
In accordance with column 2 of REACH Annex VII, the test on vapour pressure (required in section 7.5) does not need to be conducted as the melting point of calcium cyanamide is above 300 °C.
However, a numerical value for vapour pressure is required for environmental exposure calculations. Therefore, available experimental results for the structural analogue cyanamide are used in a read-across approach:
Cyanamid F1000 vapour pressure:
- T = 20°C: VP = 0.51 Pa (68 mm Hg)
- T = 25°C: VP = 1.0 Pa (133 mm Hg
The value of 0.51 Pa at 20 °C is carried forward as key value for environmental risk assessment.
Key value for chemical safety assessment
- Vapour pressure:
- 0.51 Pa
- at the temperature of:
- 20 °C
Additional information
The vapour pressure of Cyanamid F1000 was measured by the vapour measure balance method according to the EU method A.4, in 4 different temperatures between 21 and 25.2 °C.
Available experimental vapour pressure data for cyanamide are used in a read-across approach for the assessment of calcium cyanamide:
Upon dissolution in water calcium cyanamide is fast transformed to hydrogen cyanamide. Thus, upon release of calcium cyanamide to water the environmental distribution and exposure is driven by the physico-chemical/fate properties of cyanamide.
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.