Registration Dossier
Registration Dossier
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EC number: 277-459-0 | CAS number: 73398-89-7
Hydrolysis
Administrative data
- Endpoint:
- hydrolysis
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- 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 HSDB authoritative database
Data source
Reference
- Reference Type:
- other: authoritative database
- Title:
- Hydrolysis of test chemical
- Author:
- U. S. National Library of Medicine
- Year:
- 2 017
- Bibliographic source:
- HSDB (Hazardous Substances Data Bank); US national Library of Medicine reviewed by SRC, 2017.
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: as mentioned below
- Principles of method if other than guideline:
- Determination of base catalyzed second order hydrolysis rate constant and half-life of chemical .
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Benzyl butyl phthalate
- EC Number:
- 201-622-7
- EC Name:
- Benzyl butyl phthalate
- Cas Number:
- 85-68-7
- Molecular formula:
- C19H20O4
- IUPAC Name:
- 1,2-Benzenedicarboxylic acid, butyl phenylmethyl ester
- Test material form:
- liquid
- Details on test material:
- - Name of test material (as cited in study report): Butyl benzyl phthalate
- Molecular formula (if other than submission substance): C19H20O4
- Molecular weight (if other than submission substance): 312.363 g/mole
- Smiles notation (if other than submission substance): CCCCOC(=O)c1ccccc1C(=O)OCc2ccccc2
- InChl (if other than submission substance): 1S/C19H20O4/c1-2-3-13-22-18(20)16-11-7-8-12-17(16)19(21) 23-14-15-9-5-4-6-10-15/h4-12H,2-3, 13-14H2,1H3
- Substance type: organic
- Physical state: liquid
Constituent 1
- Radiolabelling:
- not specified
Study design
- Analytical monitoring:
- not specified
- Estimation method (if used):
- Structure estimation method
Results and discussion
- Transformation products:
- not specified
Dissipation DT50 of parent compoundopen allclose all
- pH:
- 7
- DT50:
- 1.4 yr
- Type:
- second order
- Remarks on result:
- other: Hydrolysis rate constant is 0.16 L/mol-sec.
- pH:
- 8
- DT50:
- 51 d
- Type:
- second order
- Remarks on result:
- other: Hydrolysis rate constant is 0.16 L/mol-sec.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not specified
- Conclusions:
- The second order hydrolysis rate constant of test chemical was determined to be 0.16 L/mol-sec with a corresponding half-lives of 1.4 yrs and 51 days at pH 7 and 8, respectively.
- Executive summary:
The half-life and base catalyzed second order hydrolysis rate constant was determined using a structure estimation method of the test chemical . The second order hydrolysis rate constant of test chemical was determined to be 0.16L/mol-sec with a corresponding half-lives of 1.4 yrs and 51 days at pH 7 and 8, respectively. Based on the half-life values, it is concluded that the test chemical is not hydrolysable.
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