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EC number: 207-312-8 | CAS number: 461-58-5
- 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

Long-term toxicity to fish
Administrative data
Link to relevant study record(s)
- Endpoint:
- adult fish: sub(lethal) effects
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- December 1997 - February 1998
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 204 (Fish, Prolonged Toxicity Test: 14-day Study)
- GLP compliance:
- yes
- Analytical monitoring:
- yes
- Details on sampling:
- - Sampling time: on exposure days 0, 7, and 14
- Sampling method: test solution was collected from the middle layer of a test vessel and analyzed using HPLC - Vehicle:
- no
- Details on test solutions:
- PREPARATION AND APPLICATION OF TEST SOLUTION
- the required amount of test solution was dissolved in dilution water to prepare 10000 mg/l of undiluted test solution
- the test solutions were prepared by mixing undiluted test solution and dilution water at a fixed flow rate (undiluted test solution: 2.5 ml/min, dilution water 22.5 ml/min); the flow volume of test solution was adjusted with a constant rate pump, and the flow volume of dilution water with a flow volume adjustment cock and capillary tube - Test organisms (species):
- Oryzias latipes
- Details on test organisms:
- TEST ORGANISM
- Common name: Himedaka
- Source: Nakajima Yogyojo (Daimyojin, Nagas-machi, Tamana-gun, Kumamoto JAPAN 869-0123
- Length at study initiation (mean and range): 2.0 cm (1.9- 2.1 cm)
- Weight at study initiation (mean and range): 0.12 g (0.10 - 0.15 g)
- Feeding during test
- Food type: TetraMin
- Amount: provided at 2 % of the daily fish weight
- Frequency: daily
ACCLIMATION
- Acclimation period: > 12 days in conditions (water quality, temperature etc.) equivalent to those used in the test
- Acclimation conditions: same as test
- Type and amount of food: TetraMin
- Feeding frequency: feeding was stopped 24 hours before study initiation
- Health during acclimation (any mortality observed): Mortality was < 5 % during the 7-day period before the start of exposure - Test type:
- flow-through
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 14 d
- Post exposure observation period:
- No post exposure observation period
- Hardness:
- 40.5 mg/l as CaCO3
- Test temperature:
- 24.1 - 24.5 °C
- pH:
- 7.1 - 7.7
- Dissolved oxygen:
- 7.5 - 8.2 mg/l
- Salinity:
- not applicable
- Nominal and measured concentrations:
- From the results of a 96-hour acute toxicity test with fish (LC50 > 100 mg/l), the maximum test concentration was set as 100 mg/l, and five concentration groups were set with a common ratio of 2 (100, 50, 25, 12.5, 6.25 mg/l; nominal concentration). A control group was set up using just dilution water.
- Details on test conditions:
- TEST SYSTEM
- Test vessel:
- Type (delete if not applicable): open
- Fill volume: 1.8 L
- Aeration: no
- Type of flow-through: constant rate pump (Glass microvolume constant rate pump GMW-A, Tokyo Rikakikai CO. Ltd.)
- Renewal rate of test solution (frequency/flow rate): 25.0 ml/min; approx. 20 water changes per day
- No. of organisms per vessel: 10
- No. of vessels per concentration (replicates): 1
- No. of vessels per control (replicates): 1
TEST MEDIUM / WATER PARAMETERS
- Source/preparation of dilution water: dechlorinated tap water
- Metals: < L.O.D., except Iron: 0.03 mg/l
- Pesticides: < L.O.D.
- Chlorine: < 0.02 mg/l
- Alkalinity: 29.0 mg/l
- Ca/mg ratio: 2.95
- Conductivity: 148 µS/cm
- Culture medium different from test medium: no
OTHER TEST CONDITIONS
- Adjustment of pH: no
- Photoperiod: light / dark = 16 hours / 8 hours
- Light intensity: room light
- Test water temperature: 24 +/- 1 °C
TEST CONCENTRATIONS
- Spacing factor for test concentrations: 2 - Reference substance (positive control):
- yes
- Remarks:
- CuSO4: LC50 (96 hours) = 0.930 mg/l
- Duration:
- 14 d
- Dose descriptor:
- other: LLC
- Effect conc.:
- > 100 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- mortality
- Duration:
- 14 d
- Dose descriptor:
- LOEC
- Effect conc.:
- > 100 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- mortality
- Duration:
- 14 d
- Dose descriptor:
- NOEC
- Effect conc.:
- >= 100 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- other: The results of investigation of significant difference in survivor weight, mortality rate in test organisms and observed symptoms were included in assessment of NOEC.
- Duration:
- 7 d
- Dose descriptor:
- LC50
- Effect conc.:
- > 100 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- mortality
- Key result
- Duration:
- 14 d
- Dose descriptor:
- LC50
- Effect conc.:
- > 100 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- mortality
- Details on results:
- - During the test general symptoms and specific symptoms (spinal curvature, bleeding, body color change, mucus secretion, etc.) were recorded, as was the number of dead organisms, on a daily basis
- Symptoms of toxicity and/or decrease in feeding were not observed in any concentration group or the control group.
- Weight of surviving test organisms at the end of exposure: no significant differences were found between the weight of the surviving Oryzias latipes to cyanoguanidine for 14 days in any of the concentration groups and that of the control group - Results with reference substance (positive control):
- CuSO4: LC50 (96 hours) = 0.930 mg/l
- Reported statistics and error estimates:
- - NOEC: the weight of survivors at the end of exposure was tested for homogeneity of variance using the Bartlett method, and then the one-factor ANOVA and Dunnett Multiple Comparison methods were employed to check for significant differences between the control group and the various concentration groups
- Validity criteria fulfilled:
- yes
- Conclusions:
- Based on the results in this test the LLC, LOEC and LC50 for Diycandimaide were > 100 mg/l. The NOEC was ≥ 100 mg/l.
Therefore, Dicyandiamide is not classified as toxic towards fish. - Executive summary:
The 14-day prolonged toxicity of Dicyandiamide to adults of Killifish (Oryzias latipes) was studied under flow through conditions according to OECD Guideline 204. Animals were exposed control and test chemical nominal concentrations of 0, 6.25, 12.5, 25, 50, and 100 mg/l.
The test system was maintained at 24.1 - 24.5 °C and a pH of 7.1 - 7.7.
The 14-day LLC and NOEC values, based on mortality, were both > 100 mg/l.
This toxicity study is classified as acceptable and satisfies the guideline requirement for 14-day prolonged toxicity study with fish.
Results Synopsis
Test Organism mean wet weight: 0.12 g
Test Organism mean length: 2.0 cm
Test Type: Flow-through
LLC: > 100 mg/l
LOEC: > 100 mg/l
NOEC: ≥ 100 mg/l
LC50: > 100 mg/l
Reference
Description of key information
The 14-day prolonged toxicity of Dicyandiamide to adults of Killifish (Oryzias latipes) was studied under flow through conditions according to OECD Guideline 204. Animals were exposed control and test chemical nominal concentrations of 0, 6.25, 12.5, 25, 50,
and 100 mg/l. The test system was maintained
at 24.1 - 24.5 °C and a pH of 7.1 - 7.7.
The 14-day LLC and NOEC values, based on mortality, were both > 100
mg/l.
Key value for chemical safety assessment
Additional information
The 14-day LLC and NOEC values, based on mortality, were both > 100 mg/l.
Results Synopsis
Test Organism mean wet weight: 0.12 g
Test Organism mean length: 2.0 cm
Test Type: Flow-through
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