Copper, .beta.-resorcylate salicylate lead complexes

Vapour pressure

Administrative data

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

22 October 2010 - 03 February 2011

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Compliant to GLP testing guideline; adequate coherence between data, comments and conclusions.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2011

Report date:

2011

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

other: effusion method

Test material

Test material information

Constituent 1

Reference substance name:

Copper Lead Resorcylate Salicylate Complex

EC Number:

614-455-3

Cas Number:

68411-07-4

Molecular formula:

C7H5O4-, C7H5O3- Cu , Pb

IUPAC Name:

Copper Lead Resorcylate Salicylate Complex

Details on test material:

- Name of test material (as cited in study report): LEAD-COPPER-RESORCYLATE-SALICYLATE (LC12-15)
- Substance type: multiconstituent
- Physical state: green powder
- Composition of test material, percentage of components: 11.9% of copper, 35.7% of lead, 14.1% of resorcylate and 35.7% of salicylate
- Purity test date: 20/10/2009
- Lot/batch No.: 09/201
- Expiration date of the lot/batch: 04/11/2011
- Storage condition of test material: in darkness at room temperature.

Results and discussion

Vapour pressure

Temp.:

25 °C

Remarks on result:

other: Vapour pressure = 7.7 x 10-5 Pa / Volatility of the test item is H = 1.9 x 10-3 Pa.m3.mol-1 (calculated value)

Any other information on results incl. tables

The mass of sample weighed was 8.92 mg. The sample was placed in a Knudsen effusion cell with an aperture size of A = 280 µm. Then, the cell was placed in the apparatus.

Temperature steps at 50, 60 and then 80°C were made but the results were not reliable. Only the result at 50°C was retained. A new sample was then weighed for each temperature.

For the temperature step at 70°C, the mass of sample weighed was 13.53 mg.

For the temperature step at 60°C, the mass of sample weighed was 9.75 mg.

After each experiment, the greenish powder changed in a greenish-brownish powder.

 

Vapour pressure results 

The vapour pressure of the test item was calculated by the “Knudsen software”. The calculation results are summarized in the following table.

Summary of the calculation of vapour pressure of the test item

  

Test temperature t(°C)	Test temperature T (K)	1/T(K^-1)	Experimental vapour pressure P(Pa)	Log P (Pa)	Knudsen effusion cell size(µm)
50	323.15	3.095E-03	6.371E-04	-3.196	280
60	333.15	3.002E-03	1.281E-03	-2.892
70	343.15	2.914E-03	2.746E-03	-2.561

 

The molecular weight of LEAD-COPPER-RESORCYLATE-SALICYLATE (LC12 -15) was communicated by the Sponsor based on a weighted average of components molecular weight values at 605.0 g/mol.

Applicant's summary and conclusion

Conclusions:

The vapour pressure of the test item extrapolated at 25°C is P = 7.7 x 10-5 Pa.
The volatility of the test item at 25°C is H = 1.9 x 10-3 Pa.m3.mol-1 (calculated value).