Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
partition coefficient
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: No report available

Data source

Reference
Reference Type:
other: calculated
Title:
QSAR Estimations for Diazobarbituric acid (CAS: 31221-06-4)
Author:
EPI Suite 4.1

Materials and methods

Principles of method if other than guideline:
A "fragment constant" methodology is used to predict log P. For this, a structure is divided into fragments (atom or larger functional groups) and coefficient values of each fragment or group are summed together to yield the log KOW estimate.
GLP compliance:
no
Type of method:
other: Calculation by KOWWIN v1.67
Partition coefficient type:
octanol-water

Test material

Constituent 1
Chemical structure
Reference substance name:
5-Diazo-2,4,6(1H, 3H, 5H)-pyrimidinetrione
EC Number:
608-591-2
Cas Number:
31221-06-4
Molecular formula:
C4H2N4O3
IUPAC Name:
5-Diazo-2,4,6(1H, 3H, 5H)-pyrimidinetrione
Constituent 2
Reference substance name:
5-diazonio-2,4-dioxo-1H-pyrimidin-6-olate
IUPAC Name:
5-diazonio-2,4-dioxo-1H-pyrimidin-6-olate
Details on test material:
related to pure substance

Results and discussion

Partition coefficient
Type:
log Pow
Partition coefficient:
0.51

Any other information on results incl. tables

Temperature and pH are not specified.

Any decomposition of the substance in water (e.g. due to hydrolysis, photolysis) is not taken into account by the program.

Applicant's summary and conclusion

Conclusions:
The partition coefficient of Diazobarbituric acid is calculated as logPow = 0.51.
Executive summary:

The partition coefficient of Diazobarbituric acid is calculated as logPow = 0.51.