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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Partition coefficient

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
partition coefficient
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Justification for type of information:
data is from peer reviewed journals
Qualifier:
no guideline available
Principles of method if other than guideline:
Determination of log Kow of p-tolyl acetate by shake flask method
GLP compliance:
not specified
Type of method:
flask method
Partition coefficient type:
octanol-water
Specific details on test material used for the study:
Name of test material (IUPAC):4-methylphenyl acetate
Molecular formula: C9H10O2
Molecular weight: 150.176 g/mol
Substance Type: Organic
Physical State: Liquid
Analytical method:
other: Absorption spectroscopy
Key result
Type:
log Pow
Partition coefficient:
2.11
Temp.:
25 °C
Remarks on result:
other: no additional details mentioned

Summary of the test:

Recommended logP

Temperature

Equilibrium method

Analytical Method

Aqueous phase

Phases Analyzed

2.11 (0.20)

AMB

SF

AS

W

AQ

Value in parenthesis signifies uncertainity

AMB – ambient temperature

SF- Shake –flask method

AS – absorption spectroscopy

W – octanol –saturated water

AQ – aqueous phase

Conclusions:
The experimental log KOW value for p-tolyl acetate was determined to be 2.11 at 25 deg C.
Executive summary:

The experimental octanol - water partition coefficient of p-tolyl acetate was determined using Shake – flask method. The study was performed at ambient temperature (i.e 25 deg C).The aqueous phase was analyzed using absorption spectroscopy. The experimental logKOW value for p-tolyl acetate was determined to be 2.11 at 25 deg C, indicating that the p-tolyl acetate is hydrophilic in nature.

Description of key information

The experimental octanol - water partition coefficient ofp-tolyl acetatewas determined using Shake – flask method. The study was performed at ambient temperature (i.e 25 deg C).The aqueous phase was analyzed using absorption spectroscopy. The experimental logKOW value for p-tolyl acetatewas determined to be 2.11 at 25 deg C, indicating that thep-tolyl acetate is hydrophilic in nature.

Key value for chemical safety assessment

Log Kow (Log Pow):
2.11
at the temperature of:
25 °C

Additional information

The experimental octanol - water partition coefficient ofp-tolyl acetatewas determined using Shake – flask method. The study was performed at ambient temperature (i.e 25 deg C).The aqueous phase was analyzed using absorption spectroscopy. The experimental logKOW value forp-tolyl acetatewas determined to be 2.11 at 25 deg C.

Data from handbooks and various authoritative, modelling databases indicate that experimental logKOW value for p-tolyl acetate was 2.11.

Data from modeling databases indicate that estimated Log KOW value for p-tolyl acetate was 2.14 

These value suggests that p-tolyl acetate is hydrophillic in nature, which is also supported by its water solubility.