Iodo(triphenylphosphino)copper

Adsorption / desorption

Link to relevant study record(s)

Reference

Endpoint:

adsorption / desorption

Remarks:

other: adsorption/desorption screening test

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

key study

Study period:

2003

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

Considering the structural similarities between iodo(triphenylphosphino)copper and iodotris(triphenylphosphino)copper and the almost identical physical and chemical properties, especially partition coefficients and water solubilites, it can be expected that the substances will show quite similar behaviour with respect to adsorption and desorption.

Reason / purpose for cross-reference:

read-across source

Qualifier:

according to guideline

Guideline:

other: OECD 121

GLP compliance:

yes

Type of method:

HPLC estimation method

Media:

soil

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: 219001
- Expiration date of the lot/batch: January 01, 2004


STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: dry, room temperature, closed container

Test temperature:

30 °C ± 1 °C

Details on study design: HPLC method:

EQUIPMENT
- Apparatus: Shimadzu HPLC
- Type: LC-6A isocratic pump, a Rheodyne seven port valve Model 7125, a column oven CT0-6A, an UV-VIS spectrophotometric detector SPD-6A V and a C-R4A Chromatopac Processor
- Type, material and dimension of analytical (guard) column: Ultrasep ES Cyano; 250 x 3 mm ID, 5 μm
- Detection system: 250 nm

MOBILE PHASES
- Type: A: organic phase ( acetonitrile), B: watery phase, A : B = 55 : 45 % (v/v)
- Solutes for dissolving test and reference substances: acetonitrile

DETERMINATION OF DEAD TIME
- Method: by means of homologous series / by inert substances which are not retained by the column

REFERENCE SUBSTANCES
- Identity: Thiourea, Linuron, 1,2,3-Trichlorbenzene,Pyrazophos, Phenanthrene, Hexachlorbenzene, e,e'-DDT

DETERMINATION OF RETENTION TIMES
- Quantity of test substance introduced in the column: 2
- Quantity of reference substances: 7

REPETITIONS
- Number of determinations: 2

Type:

Koc

Value:

5.9 dimensionless

Temp.:

30 °C

Validity criteria fulfilled:

yes

Conclusions:

Tue retention times of the test item were 3.649 min (first analysis) and 3.691 min (second
analysis). By use of the linear function of log k versus log Koc the adsorption coefficient of the test item was calculated. The mean value for log Koc by use of two single values is 5.9.

Executive summary:

The mean value for log Koc by use of two single values is 5.9.

Key value for chemical safety assessment

Koc at 20 °C:

800 000

Additional information

[LogKoc: 5.9]