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Environmental fate & pathways

Phototransformation in air

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Reference
Endpoint:
phototransformation in air
Type of information:
(Q)SAR
Adequacy of study:
key study
Study period:
2004
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with limited documentation / justification
Details on test conditions:
Sensitiser (for indirect photolysis): OH
Sensitiser concentration: 1500000 molecule/cm³
Key result
% Degr.:
50
Sampling time:
1.1 d
Test condition:
12h / day irradiation
Remarks on result:
other: for indirect photolysis
Key result
Reaction with:
OH radicals
Rate constant:
0 cm³ molecule-1 s-1
Remarks on result:
other: for indirect photolysis
Conclusions:
Based on the QSAR analysis of the structure of 3-methoxy-3-methylbutanol, the indirect photolysis of MMB is estimated with a degradtion of 50% in 1.1 days under 12h irridation (indirect photolysis) calulated with SRC-AOPWIN v1.90. The estimated rate constant in reaction with OH radicals is estimated with 9.96E-12 cm3/ molecule*s.

Description of key information

Key value for chemical safety assessment

Half-life in air:
1.1 d
Degradation rate constant with OH radicals:
0 cm³ molecule-1 s-1

Additional information

Based on the QSAR analysis of the structure of 3-methoxy-3-methylbutanol, the indirect photolysis of MMB is estimated with a degradtion of 50% in 1.1 days under 12h irridation (indirect photolysis) calulated with SRC-AOPWIN v1.90. The estimated rate constant in reaction with OH radicals is estimated with 9.96E-12 cm3/ molecule*s.

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