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Environmental fate & pathways

Hydrolysis

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Reference
Endpoint:
hydrolysis
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1997
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Qualifier:
according to guideline
Guideline:
OECD Guideline 111 (Hydrolysis as a Function of pH)
GLP compliance:
no
Radiolabelling:
not specified
Analytical monitoring:
not specified
Details on sampling:
No data
Buffers:
No data
Details on test conditions:
Water Temperature: 49-51°C
pH: pH4, pH7 and pH9
Exposure Vessel Type: Glass vial
Number of Replicates: 2
Test Period: 5 days
Duration:
5 d
Number of replicates:
2
Positive controls:
not specified
Negative controls:
not specified
Statistical methods:
No data
Preliminary study:
No data
Test performance:
No data
Transformation products:
not specified
Details on hydrolysis and appearance of transformation product(s):
No data
Remarks on result:
other: Stable at 25° and 49-51°C at pH 4, 7 and 9 in water over 5 days.
Details on results:
Both p- and m-divinylbenzene are not decomposed at 49-51°C and at pH 4, 7 and 9 in water after 5 days. Stable (at 25°C)
Validity criteria fulfilled:
yes
Conclusions:
Both p- and m-divinylbenzene are not decomposed at 49-51°C and at pH 4, 7 and 9 in water after 5 days. Stable (at 25°C)
Executive summary:

The study was conducted according to OECD Guideline 111 "Hydrolysis as a Function of pH". Both p- and m-divinylbenzene are not decomposed at 49-51°C and at pH 4, 7 and 9 in water after 5 days. Stable (at 25°C).

Description of key information

Both p- and m-divinylbenzene are stable at 25° and 49-51°C at pH 4, 7 and 9 in water over 5 days.

Key value for chemical safety assessment

Additional information

The components of DVB-HP, -63, and -55 (divinylbenzene and ethylvinylbenzne) do not possess structural groups which are susceptible to hydrolysis under pH/temperature conditions occurring in the environment. This was shown experimentally, where the components of a mixture of p- and m- DVB were stable at pH 4, 7, and 9 at 50°C over 5 days.