Propargite

Phototransformation in air

Link to relevant study record(s)

Reference

Endpoint:

phototransformation in air

Type of information:

(Q)SAR

Adequacy of study:

key study

Study period:

Not applicable

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification

Qualifier:

no guideline followed

Principles of method if other than guideline:

The gas-phase oxidation rate and half-life was calculated using the atmospheric oxidation program AOPwin, contained in the EPA's estimation program interface suite.

GLP compliance:

no

Key result

DT50:

2.155 h

Test condition:

Based upon a hydroxyl radical concentration of 1.5 x 10^6 molecules/cubic cm (12 hour day), a half-life of 2.155 hours was calculated.

The gas-phase oxidation rate of the test substance in the troposphere was predicted to be 59.5637 x 10^-12 cm³/molecule-sec. Based upon a hydroxyl radical concentration of 1.5 x 10⁶ molecules/cubic cm (12 hour day), a half-life of 2.155 hours was calculated.

Validity criteria fulfilled:

yes

Conclusions:

Under the conditions of the test, the gas-phase oxidation rate of the test material in the troposphere was calculated to be 59.5637 x 10E-12 cubic cm/molecule-sec. A half-life of 2.155 hours was calculated.

Executive summary:

Under the conditions of the test, the gas-phase oxidation rate of the test material in the troposphere was calculated to be 59.5637 x 10^-12 cubic cm/molecule-sec. A half-life of 2.155 hours was calculated.

Description of key information

Half-life of 2.155 hours; estimated using AOPWIN; Schocken (2002)

Key value for chemical safety assessment

Half-life in air:

2.155 h