DL-serinohydrazide monohydrochloride

Partition coefficient

Administrative data

Endpoint:

partition coefficient

Type of information:

experimental study

Adequacy of study:

key study

Study period:

01 October 2014-08 January 2015

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP-compliant study in accordance with EC A.8, OECD 107 and EPA OPPTS 830.7550.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2015

Report date:

2015

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

EU Method A.8 (Partition Coefficient)

Version / remarks:

(2008)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)

Version / remarks:

(1995)

Deviations:

no

Test guideline 3

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7550 (Partition Coefficient, n-octanol / H2O, Shake Flask Method)

Version / remarks:

(1996)

Deviations:

no

GLP compliance:

yes

Type of method:

shake-flask method to: flask method

Partition coefficient type:

octanol-water

Test material

Test material information

Constituent 1

Reference substance name:

DL-serinohydrazide monohydrochloride

EC Number:

259-839-8

EC Name:

DL-serinohydrazide monohydrochloride

Cas Number:

55819-71-1

Molecular formula:

C3H9N3O2.ClH

IUPAC Name:

2-amino-3-hydroxy-propanehydrazide;hydrochloride

Test material form:

solid: particulate/powder

Remarks:

migrated information: powder

Details on test material:

- Name of test material (as cited in study report): DL Serine hydrazide
- Molecular formula: C3H9N3O2.HCl
- Molecular weight: 155.6 g/mol
- Description: White powder
- Storage condition of test material: At room temperature in the dark under nitrogen
- Expiration date of the lot/batch: 22 April 2016

Study design

Analytical method:

high-performance liquid chromatography

Results and discussion

Partition coefficient

Partition coefficient 1

Type:

Pow

Partition coefficient:

0.001

Temp.:

20 °C

pH:

7

Remarks on result:

other: Mean value (n=6). Standard deviation: 0.000029

Partition coefficient 2

Type:

log Pow

Partition coefficient:

-3

Temp.:

20 °C

Remarks on result:

other: Mean value (n=6)

Details on results:

The log Pow values fell within the criterion range of ± 0.3 log units (see table below).

Any other information on results incl. tables

Results Shake-flask method

  

Ratio n-octanol:buffer pH 7 [v:v]	Analysed concentration		Pow		log Pow	pH
	n-octanol [g/lL	buffer pH 7 [g/L]	individual	mean
1:1	1.06 E-03	1.09	9.8E-04	9.9E-04	-3.0	7.1
	1.06E-03	1.05	1.0E-03		-3.0	7.1
1:2	8.24E-04	0.789	1.0E-03	1.0E-03	-3.0	7.1
	8.01E-04	0.816	9.8E-04		-3.0	7.1
2:1	1.57E-03	1.56	1.0E-03	9.9E-04	-3.0	7.1
	1.53E-03	1.59	9.6E-04		-3.0	7.1

 

A small response at the retention time of the test substance was detected in the chromatogram of the pretreated samples from the blankaqueous phase. Taking the dilution factors into account, the maximum contribution of the response to the test samples was 0.043%. It was considered not to have significant effect on the study results.

 

Applicant's summary and conclusion

Conclusions:

In a GLP-compliant study in accordance with EC A.8, OECD 107 and EPA OPPTS 830.7550 using the shake-flask method, the log Pow of the substance at pH 7 and 20°C has been determined as -3.0 (Pow= 1.0E-03). Because the log Pow is outside the range of applicablity of the shake-flask method (-2 to 4), the log Pow will be reported as < -2.