Bis(2-chloroethyl) ether

Phototransformation in air

Link to relevant study record(s)

Reference

Endpoint:

phototransformation in air

Type of information:

not specified

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Principles of method if other than guideline:

- Principle of test: calculation method
- Short description of test conditions: no data available

Specific details on test material used for the study:

TEST MATERIAL:
- Names (as cited): bis (2-chloroethyl) ether
- Purity: not specifed

Estimation method (if used):

PHOTOCHEMICAL REACTION WITH OH RADICALS
- Concentration of OH radicals: 8.0E+05 molecules/cubic cm
- Degradation rate constant: 1.79E-11 cubic cm/molecule-sec
- Temperature for which rate constant was calculated: 25°C
- Computer programme: not specified

DT50:

13.44 h

Reaction with:

OH radicals

Rate constant:

0 cm³ molecule-1 s-1

Remarks on result:

other: 25°C

Transformation products:

not specified

Validity criteria fulfilled:

not specified

Conclusions:

The half-life for the reaction of Bis(2-chloroethyl) ether with photochemically generated hydroxyl radicals was estimated at 13.44 h, based on a rate constant of 1.79E-11 cm3/molecule-1/sec-1, an ambient hydroyl radical concentration of 8E+05 molecules/cm3 and at a temperature of 25°C.

Executive summary:

The data originates from the Graphical Exposure Modeling System (GEMS) Fate of Atmospheric Pollutants (FAP) developped by US EPA in 1986. The modeling methology and result outputs are not detailed but the report has been reviewed in accordance with the U.S. Environmental Portection Agency's peer and administrative review policies and has been approved for publication. The data are thus deemed reliable (reliability score of 2).

The half-life for the reaction of Bis(2-chloroethyl) ether with photochemically generated hydroxyl radicals was estimated at 13.44 h, based on a rate constant of 1.79x10^-11 cm³/molecule^-1.sec^-1, an ambient hydroyl radical concentration of  8x10⁵ molecules/cm³ and at a temperature of 25°C. Considering that Bis(2-chloroethyl) ether is relativeley soluble, it is likely to be removed from the atmosphere by wet deposition.

Description of key information

The half-life for the reaction of Bis(2-chloroethyl) ether with photochemically generated hydroxyl radicals was estimated at 13.44 h, based on a rate constant of 1.79x10^-11cm³/molecule^-1.sec^-1, an ambient hydroyl radical concentration of  8x10⁵molecules/cm³and at a temperature of 25°C. Considering that Bis(2-chloroethyl) ether is relativeley soluble, it is likely to be removed from the atmosphere by wet deposition.

Key value for chemical safety assessment

Half-life in air:

13.44 h

Degradation rate constant with OH radicals:

0 cm³ molecule-1 s-1

Additional information

The data originates from the Graphical Exposure Modeling System (GEMS) Fate of Atmospheric Pollutants (FAP) developped by US EPA in 1986. The modeling methology and result outputs are not detailed but the report has been reviewed in accordance with the U.S. Environmental Portection Agency's peer and administrative review policies and has been approved for publication. The data are thus deemed reliable (reliability score of 2).