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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Additional information on environmental fate and behaviour

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Administrative data

Endpoint:
additional information on environmental fate and behaviour
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Estimated value based on accepted model

Data source

Referenceopen allclose all

Reference Type:
secondary source
Title:
No information
Author:
Hine J, Mookerjee PK
Year:
1975
Bibliographic source:
J. Org. Chem., 40:292-298 (HSDB/354)
Reference Type:
secondary source
Title:
No information
Author:
Lyman WJ et al.
Year:
1990
Bibliographic source:
Handbook of Chemical Property Estimation Methods, pp. 15-1 to 15-29, Amer. Chem. Soc., Washington, DC (HSDB/354)
Reference Type:
secondary source
Title:
No information
Author:
SRC (Syracuse Research Corporation) (n.d.). (HSDB/354).

Materials and methods

Principles of method if other than guideline:
Estimated
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Dimethyl ether
EC Number:
204-065-8
EC Name:
Dimethyl ether
Cas Number:
115-10-6
Molecular formula:
C2H6O
IUPAC Name:
dimethyl ether

Results and discussion

Any other information on results incl. tables

The Henry's Law constant for the test substance is estimated as 7.6E-3 atm-m3/mole (SRC, n.d.) from its vapor pressure, 4450 mm Hg, and water solubility, 4.6E4 mg/L (Hine and Mookerjee, 1975). This Henry's Law constant indicates that the test substance is expected to volatilize rapidly from water surfaces (Lyman et al., 1990; SRC, n.d.). Based on this Henry's Law constant, the estimated volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec) is approximately 2.1 hours (Lyman et al., 1990; SRC, n.d.). The estimated volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec) is approximately 2.7 days (Lyman et al., 1990; SRC, n.d).

Applicant's summary and conclusion