Registration Dossier

Administrative data

Endpoint:
phototransformation in air
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Peer reviewed data from HSDB. HSDB and SRC databases are referred to as reliable data source in Guidance on information requirements and chemical safety assessment Chapter R.7a: Endpoint specific guidance.

Data source

Referenceopen allclose all

Reference Type:
other: data base data
Title:
No information
Author:
HSDB database
Year:
2003
Bibliographic source:
HSDB database: http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?HSDB
Reference Type:
other: data base data
Title:
No information
Author:
SRC
Bibliographic source:
SRC
Reference Type:
publication
Title:
No information
Author:
Meylan WM, Howard PH
Year:
1993
Bibliographic source:
Chemosphere 26: 2293-99
Reference Type:
review article or handbook
Title:
No information
Author:
Lyman WJ et al.
Year:
1990
Bibliographic source:
Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 7-5, 8-13
Reference Type:
publication
Title:
No information
Author:
Bidleman TF
Year:
1988
Bibliographic source:
Environ Sci Technol 22: 361-367
Reference Type:
review article or handbook
Title:
No information
Author:
Daubert TE, Danner RP
Year:
1989
Bibliographic source:
Physical and Thermodynamic Properties of Pure Chemicals Data Compilation Washington, DC: Taylor and Francis

Materials and methods

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
name of substance as cited on HSDB data base:
diethyl carbonate

Results and discussion

Any other information on results incl. tables

Info from HSDB database (http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?HSDB):

ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere (1), diethyl carbonate, which has a vapor pressure of 10.8 mm Hg at 25 deg C (2), is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase diethyl carbonate is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals (SRC); the half-life for this reaction in air is estimated to be 5 days (SRC), calculated from its estimated rate constant of 3.3X10-12 cu cm/molecule-sec at 25 deg C (SRC) determined using a structure estimation method (3). Diethyl carbonate may also undergo direct photolysis in the environment since this compound contains a functional group that can absorb light greater than 290 nm (4).

(1) Bidleman TF; Environ Sci Technol 22: 361-367 (1988)

(2) Daubert TE, Danner RP; Physical and Thermodynamic Properties of Pure Chemicals Data Compilation Washington, DC: Taylor and Francis (1989)

(3) Meylan WM, Howard PH; Chemosphere 26: 2293-99 (1993)

(4) Lyman WJ et al; Handbook of Chemical Property Estimation Methods. Washington, DC: Amer Chem Soc pp. 8-13 (1990)

Applicant's summary and conclusion