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Environmental fate & pathways

Hydrolysis

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Administrative data

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Reference
Endpoint:
hydrolysis
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
Justification for type of information:
Data is from computational model developed by USEPA
Qualifier:
according to guideline
Guideline:
other: Modeling database
Principles of method if other than guideline:
Data is from HYDROWIN v2.00 of EPI suite
GLP compliance:
not specified
Specific details on test material used for the study:
- Name of test material: (4-methoxyphenyl)methyl formate
- Molecular formula: C9H10O3
- Molecular weight: 166.175 g/mol
- Smiles notation: c1(ccc(OC)cc1)COC=O
- InChl: 1S/C9H10O3/c1-11-9-4-2-8(3-5-9)6-12-7-10/h2-5,7H,6H2,1H3
- Substance type: Organic
- Physical state: Liquid
Radiolabelling:
not specified
Analytical monitoring:
not specified
Estimation method (if used):
HYDROWIN v2.00
Transformation products:
not specified
Key result
pH:
7
Temp.:
25 °C
DT50:
1.616 d
Type:
other: estimated data
Remarks on result:
other: Hydrolysis rate constant is 49.65 L/mol-sec
Key result
pH:
8
Temp.:
25 °C
DT50:
3.878 h
Type:
other: estimated data
Remarks on result:
other: Hydrolysis rate constant is 49.65 L/mol-sec

HYDROWIN Program (v2.00) Results:

================================

SMILES : O=COCc(ccc(OC)c1)c1

CHEM : Benzenemethanol, 4-methoxy-, formate

MOL FOR: C9 H10 O3

MOL WT : 166.18

--------------------------- HYDROWIN v2.00 Results ---------------------------

NOTE: Fragment(s) on this compound are NOT available from the fragment

library. Substitute(s) have been used!!! Substitute R1, R2, R3,

or R4 fragments are marked with double astericks "**".

ESTER: R1-C(=O)-O-R2 R1: -H

** R2: -CH2-Phenyl

Kb hydrolysis at atom # 2: 4.965E+001 L/mol-sec

Total Kb for pH > 8 at 25 deg C : 4.965E+001 L/mol-sec

Kb Half-Life at pH 8: 3.878 hours

Kb Half-Life at pH 7: 1.616 days

Validity criteria fulfilled:
not specified
Conclusions:
The estimated half-life of (4-methoxyphenyl)methyl formate was estimated to be 1.616 days at pH 7.0 and 3.878 hrs at pH 8.0 (at 25 deg C), indicating that it is moderate to slow hydrolysable.
Executive summary:

 HYDROWIN v2.00 program of Estimation Programs Interface (EPI Suite, 2017) prediction model was used to predict the hydrolysis half-life of test compound (4-methoxyphenyl)methyl formate (CAS No. 122 -91 -8). The estimated half-life of (4-methoxyphenyl)methyl formate was estimated to be 1.616 days at pH 7.0 and 3.878 hrs at pH 8.0 (at 25 deg C), indicating that it is moderate to slow hydrolysable.

Description of key information

HYDROWIN v2.00 program of Estimation Programs Interface (EPI Suite, 2017) prediction model was used to predict the hydrolysis half-life of test compound (4-methoxyphenyl)methyl formate (CAS No. 122 -91 -8). The estimated half-life of (4-methoxyphenyl)methyl formate was estimated to be 1.616 days at pH 7.0 and 3.878 hrs at pH 8.0 (at 25 deg C), indicating that it is moderate to slow hydrolysable.

Key value for chemical safety assessment

Half-life for hydrolysis:
1.616 d
at the temperature of:
25 °C

Additional information

HYDROWIN v2.00 program of Estimation Programs Interface (EPI Suite, 2017) prediction model was used to predict the hydrolysis half-life of test compound (4-methoxyphenyl)methyl formate (CAS No. 122 -91 -8). The estimated half-life of (4-methoxyphenyl)methyl formate was estimated to be 1.616 days at pH 7.0 and 3.878 hrs at pH 8.0 (at 25 deg C), indicating that it is moderate to slow hydrolysable.