1,2,3,4-tetrahydronaphthalene

Phototransformation in air

Link to relevant study record(s)

Reference

Endpoint:

phototransformation in air

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1988

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Test procedure in accordance with generally accepted scientific standards and described in sufficient detail

Principles of method if other than guideline:

Relative rate method, see Reference

GLP compliance:

not specified

Light source:

other: blacklight irradiation

Details on test conditions:

Sensitiser (for indirect photolysis): OH

Reference substance:

yes

Remarks:

Propene

Transformation products:

not measured

- Rate constant: (3.43 +- 0.06) x 1E-11 cm3/(molec. x s)

Rate constant (for indirect photolysis): ca. 0.0000000000343 cm³/(molecule*sec)
Degradation in % (for indirect photolysis): = 50  after 11.2 hour(s) at 500,000 OH radicals / cm3

Validity criteria fulfilled:

yes

Conclusions:

The rate constant for the OH sensitized photodegradation of 1,2,3,4-tetrahydronaphthalene was measured as (3.43 +- 0.06) x 1E-11 cm3/(molec. x s). At 500,000 OH radicals / cm3, this corresponds to a half-life of 11.2 hours.

Executive summary:

The rate constant for the OH sensitized photodegradation of 1,2,3,4-tetrahydronaphthalene was measured with a relative rate method as (3.43 +- 0.06) x 10E-11 cm3/(molec. x s). At 500,000 OH radicals / cm3, this corresponds to a half-life of 11.2 hours.

Description of key information

The rate constant for the OH sensitized photodegradation of 1,2,3,4-tetrahydronaphthalene was measured as (3.43 +- 0.06) x 1E-11 cm3/(molec. x s). At 500,000 OH radicals / cm3 (typical 24-hour mean in central Europe), this corresponds to a half-life of 11.2 hours.

Key value for chemical safety assessment

Half-life in air:

11.2 h

Degradation rate constant with OH radicals:

0 cm³ molecule-1 s-1