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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Water solubility

Currently viewing:

Administrative data

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
OECD 105

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2019
Report date:
2019

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Type of method:
flask method

Test material

Constituent 1
Chemical structure
Reference substance name:
Barbituric acid
EC Number:
200-658-0
EC Name:
Barbituric acid
Cas Number:
67-52-7
Molecular formula:
C4H4N2O3
IUPAC Name:
pyrimidine-2,4,6(1H,3H,5H)-trione

Results and discussion

Water solubility
Key result
Water solubility:
10.4 g/L
Conc. based on:
test mat.
Temp.:
20 °C
pH:
2.5
Remarks on result:
other: mean of 3 measurements

Any other information on results incl. tables

Table 1: results of preliminary test

water for 0.1 g test item [mL]

0.1

0.5

1

2

10

100

150

approximate solubility [g/L]

> 1000

200 -1000

100 - 200

50 - 100

10 - 50

1 – 10

< 1

visual evaluation

not soluble

not

soluble

not

soluble

not

soluble

not soluble

soluble

soluble

Table 2: results of flask method

Flask no

Equilibration time at 20 °C [h]

Test substance content [g/L]

1

24

10.4

2

48

10.3

3

72

10.3

mean

 

10.4

Applicant's summary and conclusion