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EC number: 206-992-3 | CAS number: 420-04-2
- 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
Other distribution data
Administrative data
- Endpoint:
- other distribution data
- Remarks:
- leaching study
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1991
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 991
- Report date:
- 1990
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: BBA Guideline for the Testing of Plant Protection Products (Part IV-4-2: Versickerungsverhalten von Pflanzenschutzmitteln) adopted December 1986
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of study:
- soil leaching
- Media:
- water - soil
Test material
- Reference substance name:
- Cyanamide
- EC Number:
- 206-992-3
- EC Name:
- Cyanamide
- Cas Number:
- 420-04-2
- Molecular formula:
- CH2N2
- IUPAC Name:
- cyanamide
- Test material form:
- other: aqueous solution
- Details on test material:
- - Test material: ALZODEF (an 49 % (w/w) aqueous solution of cyanamide)
- Charge number: 89018603
- Appearance: Aqueous solution
Constituent 1
Results and discussion
Any other information on results incl. tables
Amount of Leachate:
The amount of leachate collected after two days ranged from 388 to 410 mL.
Concentration in leachate:
The amount of cyanamide in the leachate was in the range of 0.007 – 0.28 µg/mL representing 0.08 to 2.8 % of the applied amount of hydrogen cyanamide. The cyanamide concentration in the leachate was highest in the Standard 2.1 soil. This soil had a very low organic carbon, silt and clay content resulting in a reduced adsorption capacity.
Results of column leaching study with ALZODEF:
|
|
Standard 2.1 (sand) |
Standard 2.2 (slightly loamy sand) |
Standard 2.3 (moderate silty sand) |
mL leachate |
Rep a |
403 |
400 |
410 |
Rep b |
395 |
396 |
389 |
|
average |
399 |
398 |
400 |
|
mg cyanamide in leachate/column |
Rep a |
0.113 |
0.024 |
0.003 |
Rep b |
0.107 |
0.051 |
0.007 |
|
average |
0.110 |
0.038 |
0.005 |
|
% of applied cyanamide in leachate |
Rep a |
2.9 |
0.6 |
0.08 |
Rep b |
2.7 |
1.3 |
0.18 |
|
average |
2.8 |
1.0 |
0.13 |
|
µg cyanamide/ mL leachate |
Rep a |
0.28 |
0.059 |
0.007 |
Rep b |
0.27 |
0.128 |
0.017 |
|
average |
0.28 |
0.094 |
0.012 |
Applicant's summary and conclusion
- Conclusions:
- Cyanamide was slightly mobile in columns of all three soil types studied. The mobility decreased with increasing fineness of soil texture and also with increasing soil organic carbon content.
- Executive summary:
The mobility of cyanamide, the active ingredient of ALZODEF, was investigated in three different soils (sand, slightly loamy sand and moderate silty sand) using the column leaching method. For this purpose the soils were packed into glass columns saturated with water. ALZODEF was added on the top of the soil column at a nominal concentration of 8 mg ALZODEF per column equivalent to 3.92 mg cyanamide/column and corresponding to a field application rate of 40 l ALZODEF/ha. The columns were incubated at 20 ± 2°C in the dark and a total amount of 393 mL (200 mm) distilled water was applied dropwise to each soil column over a period of 2 days. The leachate was collected.
The amount of cyanamide in the leachate was in the range of 0.007 – 0.28 µg/mL representing 0.08 to 2.8 % of the applied amount of hydrogen cyanamide. The cyanamide concentration in the leachate was highest in the Standard 2.1 soil. This soil had a very low organic carbon, silt and clay content resulting in a reduced adsorption capacity.
Cyanamide was slightly mobile in columns of all three soil types studied. The mobility decreased with increasing fineness of soil texture and also with increasing soil organic carbon content.
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