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Administrative data

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018-03-09 to 2018-05-09
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report date:
2018

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.6 (Water Solubility)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7840 (Water Solubility)
Deviations:
no
GLP compliance:
no
Type of method:
flask method

Test material

Constituent 1
Chemical structure
Reference substance name:
4-amino-5-methylpyridin-2(1H)-one
EC Number:
682-818-3
Cas Number:
95306-64-2
Molecular formula:
C6 H8 N2 O
IUPAC Name:
4-amino-5-methylpyridin-2(1H)-one
Test material form:
solid

Results and discussion

Water solubility
Key result
Water solubility:
29.8 g/L
Conc. based on:
test mat.
Loading of aqueous phase:
100 g/L
Incubation duration:
24 h
Temp.:
20 °C
pH:
5.3

Applicant's summary and conclusion

Conclusions:
The water solubility was determined to be 29.8 g/L at 20 °C.
Interpretation of results: very soluble (>10 g/L)
Executive summary:

Title:

4-Amino-5-Methylpyridon: Determination of the Water Solubility

This study was based on the procedures indicated by the following internationally recognized documents:

-OECD Guidelines for Testing of Chemicals, Guideline No.105, ”Water Solubility”; adopted July 27, 1995

-Commission Regulation (EC) No 440/2008, Annex, Part A, Methods for the determination of physico-chemicals properties, A6 "Water Solubility", May 2008

-Product Properties Test Guideline of the United States Environment Protection Agency (EPA), OPPTS 830.7840 Water Solubility: Column Elution Method; Shake Flask Method, March 1998

Purpose:

The purpose of this study was to evaluate the solubility of the test item in water which is specified by the saturation mass concentration of the test item in water at a specified temperature.

Results:           

The water solubility of the test item was determined using the shake flask method. The saturation mass concentrations of the test item were determined using HPLC / UV-VIS.

The results showed no tendency to increase and met all validity criteria, therefore the study is considered to be valid. Corresponding to the analyses the water solubility was determined to be 29.8 g/L at 20 °C.

This study is classified acceptable and satisfies the guideline requirements for water solubility studies.

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