N-cyclopropyl-1,3,5-triazine-2,4,6-triamine

Additional information on environmental fate and behaviour

Administrative data

Endpoint:

additional information on environmental fate and behaviour

Type of information:

experimental study

Adequacy of study:

supporting study

Study period:

2001/12/14 to 2002/04/29

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:

2002

Report date:

2002

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: Guidelines for the Testing of Plant Protection Products in Registration Procedures, Part IV, 6-1, Testing of Volatilisation Behaviour and Fate of Plant Protection Products in Air, Federal Biological Research Centre for Agriculture and Forestry, Germany

Version / remarks:

July 1990

Deviations:

no

GLP compliance:

yes

Type of study / information:

Study performed under controlled laboratory conditions.

Test material

Test material information

Constituent 1

Reference substance name:

N-cyclopropyl-1,3,5-triazine-2,4,6-triamine

EC Number:

266-257-8

EC Name:

N-cyclopropyl-1,3,5-triazine-2,4,6-triamine

Cas Number:

66215-27-8

Molecular formula:

C6H10N6

IUPAC Name:

N2-cyclopropyl-1,3,5-triazine-2,4,6-triamine

Specific details on test material used for the study:

Both labelled and non labelled substance applied.

Results and discussion

Any other information on results incl. tables

Results:

The total recovery of all experiments ranged from 93.4 % to 101.1 % of the applied radioactivity. After 24 hours of exposure the volatilisation of cyromazine accounted for 1.5 % of the applied dose. Since it was in the same order of magnitude as the variance of the experiments (± 1.5 %), no significant volatilisation of cyromazine occurred.

Cyromazine is non-volatile from bean leaf surfaces at an air flow of 1.2 m/s, since the determined loss of radioactive material on the leaf surface was in the same order of magnitude as the variance of the experiments (± 1.5 %).

Applicant's summary and conclusion

Conclusions:

In conclusion, cyromazine is non-volatile from bean leaf surfaces at an air flow of 1.2 m/s, since the determined loss of radioactive material on the leaf surface was in the same order of magnitude as the variance of the experiments (± 1.5 %).

Executive summary:

The volatilisation of a formulated active ingredient from leaf surfaces and its subsequent dispersion into the atmosphere represents one transport process by which a compound may be spread throughout the environment. The objectives of this study were to evaluate and quantify the importance of the volatilisation process for the insecticide cyromazine, formulation, under laboratory conditions.

 

Leaves of bean plants (Phaseolus vulgaris nana var. Autan) were treated with [U- ¹⁴C]triazine labelled cyromazine at a rate of 9.8 µg/cm² corresponding to 1 kg/ha in a model system and the amount of cyromazine lost through volatilisation was measured at a relative air humidity of 51.3 %, an air flow of 1.2 m/s, and a temperature of 21 °C.

The total recovery of all experiments ranged from 93.4 % to 101.1 % of the applied radioactivity. Cyromazine is non-volatile from bean leaf surfaces at an air flow of 1.2 m/s, since the determined loss of radioactive material on the leaf surface was in the same order of magnitude as the variance of the experiments (± 1.5 %).