Registration Dossier
Registration Dossier
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EC number: 239-370-5 | CAS number: 15337-18-5
PBT assessment
Administrative data
PBT assessment: overall result
- Name:
- Zinc bis(dipentyldithiocarbamate)
- Type of composition:
- legal entity composition of the substance
- State / form:
- liquid
- Reference substance:
- Zinc bis(dipentyldithiocarbamate)
- PBT status:
- the substance is not PBT / vPvB
- Justification:
Conclusion on P / vP properties: vP (and P)
The test item is not readily biodegradable (21% degradation in 28 days) and is therefore considered to be very Persistant (vP) based upon the information available.
Conclusion on B / vB properties: not B/vB
The water solubility and partition coefficient (Log Pow) of the substance are 0.086 mg/L and > 9.4, respectively. The typical molecular mass of the substance (C22H44N2S4Zn) is 530.27 daltons. These data indicate that the substance is relatively large (> 500 daltons), has very low water solubility (< 0.1 mg/L), and is a highly lipophilic (Log Pow > 5.6) molecule, and thus is not expected to be absorbed by fish. In addition, acute oral toxicity study in rats did not show any systemic effects up to 2000 mg/kg, the highest doses tested. Although the substance was not tolerated after 3 doses at 500 mg/kg/day or 2 doses at 1000 mg/kg/day and the rats were euthanized due to local effects on fore stomach and corresponding poor clinical conditions in the repeated dose oral range-finding toxicity study in rats, the substance did not induce any systemic effects up to 250 mg/kg/day, the highest doses tested in the combined repeated dose oral toxicity study with the reproductive/developmental toxicity screening test in rats.
Conclusion on T properties: not T
No evidence of toxicity has been reported in any study on the test item
- Likely routes of exposure:
The primary route of test item release release will be to wastewater.
It may be released to air through use processes, however, the vapour pressure is 6.3 x 10-11Pa
at 25 °C and therefore air exposure is expected to be negligible.
Release to soil may occur from spreading of STP sludge’s, however this is advised against.
Reference
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