Registration Dossier

Administrative data

Endpoint:
adsorption / desorption: screening
Type of information:
experimental study
Adequacy of study:
key study
Study period:
September 1980
Reliability:
1 (reliable without restriction)
Justification for type of information:
Read-across from the analogue substance RDX. Please see the RA justification document in section 13.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1980
Report date:
1980

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
EU Method C.18 (Adsorption / Desorption Using a Batch Equilibrium Method)
GLP compliance:
not specified
Type of method:
batch equilibrium method
Media:
sediment

Test material

Constituent 1
Chemical structure
Reference substance name:
Perhydro-1,3,5-trinitro-1,3,5-triazine
EC Number:
204-500-1
EC Name:
Perhydro-1,3,5-trinitro-1,3,5-triazine
Cas Number:
121-82-4
Molecular formula:
C3H6N6O6
IUPAC Name:
Perhydro-1,3,5-trinitro-1,3,5-triazine

Results and discussion

Adsorption coefficient
Type:
Koc
Value:
> 42 - < 167 L/kg

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
Koc are extremely low, indicating that sediment sorption will not lead to significant RDX loss in the aquatic environment.
These Koc values are indicative of moderate-to-high mobility in soil; therefore, RDX can be expected to leach into groundwater.
Executive summary:

Actually, a study does not necessarily need to be conducted for HMX because the substance has a low octanol water partition coefficient and the adsorption potential is related to this parameter.

Nevertheless, a study was available for the analogue substance RDX and the results have been extrapolated to HMX. Results show that koc values are extremely low, as expected regarding the low log kow of the substance.

HMX and RDX have been demonstrated to be very similar in structure, physical/chemical properties and toxicological profile in the Analogue Approach - Read Across High Melting Explosive (HMX) (2013) document (attached in section 13). It is expected that HMX and RDX have nearly the same environmental fate and behaviour. Therefore, a read-across from HMX to data obtained with RDX is scientifically justified.