Registration Dossier

Environmental fate & pathways

Hydrolysis

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Administrative data

Endpoint:
hydrolysis
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: secondary literature (read-across)

Data source

Reference
Reference Type:
review article or handbook
Title:
Review of dimethyl carbonate (DMC) manufacture and its characteristics as a fuel additive.
Author:
Pacheco MA, Marshall CL
Year:
1997
Bibliographic source:
Energy & Fuels 11, 2-29 (1997)

Materials and methods

Principles of method if other than guideline:
In this publication, the hydrolysis of dimethyl carbonate is discussed.
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Duration of test
Duration:
1 wk
Temp.:
70 °C

Results and discussion

Transformation products:
yes
Identity of transformation productsopen allclose all
No.:
#1
Reference
Reference substance name:
Unnamed
Inventory number:
InventoryMultipleMappingImpl [inventoryEntryValue=EC 200-659-6]
IUPAC name:
methanol
CAS number:
67-56-1
No.:
#2
Reference
Reference substance name:
Unnamed
Inventory number:
InventoryMultipleMappingImpl [inventoryEntryValue=EC 204-696-9]
IUPAC name:
dioxomethane
CAS number:
124-38-9
Total recovery of test substance (in %)
% Recovery:
50
Temp.:
70 °C
Duration:
1 wk

Applicant's summary and conclusion

Validity criteria fulfilled:
not applicable
Conclusions:
Dimethyl carbonate contains functional groups susceptible to hydrolysis. At pH values in the range of 7, no hydrolysis occurs whereas 50% of dimethyl carbonate were hydrolyzed to methanol and CO2 within one week in the presence of K2CO3 at 70°C. Similar results are to be expected for diethyl carbonate.
Executive summary:

In this review article, hydrolysis of dimethyl carbonate is discussed. Dimethyl carbonate contains functional groups susceptible to hydrolysis. At pH values in the range of 7, no hydrolysis occurs. Conditions which favour hydrolysis are elevated temperature and alkali metal carbonates: 50% of dimethyl carbonate were hydrolyzed to methanol and CO2 within one week in the presence of K2CO3 at 70°C. Similar results are to be expected for diethyl carbonate.