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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
Endpoint summary
Administrative data
Description of key information
Appearance: Kalkstickstoff (calcium cyanamide, technical grade) is a black solid with a characteristic odour at 20 °C and 1013 hPa.
Melting point: The melting range of "Kalkstickstoff" (calcium cyanamide, technical grade) according DIN 51004 was determined to be 1145 °C to 1217 °C.
Boiling point: was not determined.
Density: The density of calcium cyanamide (pure and technical grade) was determined to be 2.3–2.36 g/cm³ at 20 °C.
Particle size: The mass median diameter of calcium cyanamide, technical grade (Kalkstickstoff) was determined to be 40 µm.
Vapour pressure: 0.51 Pa at 20 °C (read-across from hydrogen cyanamide)
Partition coefficient: log Pow = –0.72 (read-across from hydrogen cyanamide)
Water solubility: It is technically not possible to determine the water solubility of calcium cyanamide, as the substance is immediately transformed to (hydrogen) cyanamide.
Solubility in organic solvent: was not determined.
Surface tension: The surface tension of the "Kalkstickstoff" (calcium cyanamide, technical grade) was 64.38 mN/m.
Flash point: was not determined.
Auto-flammability: Calcium cyanamide, technical grade (Kalkstickstoff) did not ignite up to a temperature of 850 °C.
Flammability: Kalkstickstoff is considered to be non flammable. In addition, no flammability in contact with water and no pyrophoric abilities are expected.
Explosiveness: Based on the molecular structure of calcium cyanamide, technical grade (Kalkstickstoff) does not have to be classified with respect to explosiveness.
Oxidising properties: Based on the molecular structure of calcium cyanamide, technical grade (Kalkstickstoff) does not have to be classified with respect to oxidising properties.
pH: The pH of a 1 % dispersion of calcium cyanamide technical grade in deionised water was determined to be 12.5.
Dissociation constant: does not dissociate.
Viscosity: was not determined (calcium cyanamide is a solid).
Additional physico-chemical information:
The dusting tendency of the mixture “Perlka” concerning alveolar penetrating dust was determined to be very low (< 9.01 mg/kg).
Additional information
Available experimental data for vapour pressure, partition coefficient (octanol/water), and dissociation constant 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.
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