[No public or meaningful name is available]

Additional information on environmental fate and behaviour

Administrative data

Endpoint:

additional information on environmental fate and behaviour

Type of information:

experimental study

Adequacy of study:

key study

Study period:

April 15, 2008 to September 5, 2008

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. Study was not conducted in strict compliance with GLP.

Cross-reference

Reason / purpose for cross-reference:

reference to other study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2008

Report date:

2008

Materials and methods

Test guideline

Qualifier:

no guideline followed

Principles of method if other than guideline:

For the PVC leaching investigation, pipe and plaque samples were tested to investigate the leaching of C-4000 from these materials into tap water.
For the first shipment, PVC pipe samples, the samples were placed into polypropylene bottles, and 10 mL of tap water was added to each bottle. The tap water had a pH of 7.4. The samples were capped and shaken for 24 hours. The water was then decanted into Nalgene bottles. A second 10-mL aliquot of tap water was added to the samples, and the samples were again shaken and decanted to form a second sample. The samples were analyzed directly, and were also diluted by combining a 5-mL aliquot of methanol with a 5-mL aliquot of the sample (1:1 dilution). A tap water blank was also analyzed.
The second shipment, the PVC plaque samples, was analyzed in the same manner, excpet only 6.5 mL of tap water was added for the first extraction, and a tap water blank sample was not re-analyzed.

GLP compliance:

no

Type of study / information:

PVC pipe and plaque leaching investigation
Analytical monitoring: No
Details on test conditions: See principles of method
Positive controls: No
Negative controls: Yes; blank tap water

Test material

Test material information

Constituent 1

Details on test material:

- Name of test material (as cited in study report): PVC pipe and PVC plaque samples

Results and discussion

Any other information on results incl. tables

No peak above the minimum quantifiable limit (MQL) was detected in the testing. The MQL for the testing was defined as the concentration of the lowest standard times the dilution factor for the control. For the samples analyzed directly, the MQL would be that of the lowest standard, which was 0.624 ng/mL. The diluted samples were diluted 1:1, so the MQL would be 1.25 ng/mL.

Applicant's summary and conclusion

Conclusions:

Under the condition noted in these tests for the test substance, C-4000, the data support the following conclusions:
Aqueous concentration of C-4000 in tap water containing PVC pipe samples [1 x 6 cm] were less than the minimum quantifiable level (MQL = 0.624 ppb or 0.624 ug/L) after two successive 24 hour periods with blank tap water added at the beginning of each period.
Aqueous concentration of C-4000 in tap water containing PVC plaque samples [1 x 2.4 x 0.3 cm] were less than the minimum quantifiable level (MQL = 0.624 ppb or 0.624 ug/L) after two successive 24 hour periods with blank tap water added at the beginning of each period.