Registration Dossier
Registration Dossier
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EC number: 945-883-1 | CAS number: 1379424-11-9
PBT assessment
Administrative data
PBT assessment: overall result
- Name:
- Dipentaerythritol hexaesters of 3,5,5-trimethylhexanoic acid and n-heptanoic acid
- Type of composition:
- legal entity composition of the substance
- State / form:
- liquid
- Reference substance:
- Dipentaerythritol hexaesters of 3,5,5-trimethylhexanoic acid and n-heptanoic acid
- Reference substance:
- Dipentaerythritol hexaesters of 3,5,5-trimethylhexanoic acid and n-heptanoic acid
- Reference substance:
- Dipentaerythritol hexaesters of 3,5,5-trimethylhexanoic acid and n-heptanoic acid
- Reference substance:
- Dipentaerythritol hexaesters of 3,5,5-trimethylhexanoic acid and n-heptanoic acid
- Reference substance:
- Dipentaerythritol hexaesters of 3,5,5-trimethylhexanoic acid and n-heptanoic acid
- Reference substance:
- Dipentaerythritol hexaesters of 3,5,5-trimethylhexanoic acid and n-heptanoic acid
- Reference substance:
- Dipentaerythritol hexaesters of 3,5,5-trimethylhexanoic acid and n-heptanoic acid
- Reference substance:
- Dipentaerythritol hexaesters of 3,5,5-trimethylhexanoic acid and n-heptanoic acid
- Reference substance:
- Dipentaerythritol hexaesters of 3,5,5-trimethylhexanoic acid and n-heptanoic acid
- Name:
- Boundary composition CAS 1379424-11-9
- Type of composition:
- boundary composition of the substance
- State / form:
- liquid
- Reference substance:
- Boundary composition CAS 1379424-11-9
- Reference substance:
- Boundary composition CAS 1379424-11-9
- Reference substance:
- Boundary composition CAS 1379424-11-9
- Reference substance:
- Boundary composition CAS 1379424-11-9
- Reference substance:
- Boundary composition CAS 1379424-11-9
- Reference substance:
- Boundary composition CAS 1379424-11-9
- Reference substance:
- Boundary composition CAS 1379424-11-9
- Reference substance:
- Boundary composition CAS 1379424-11-9
- Reference substance:
- Boundary composition CAS 1379424-11-9
- PBT status:
- the substance is not PBT / vPvB
- Justification:
Persistence
One study according to OECD 301B resulted in 14% (CO2 evolution) degradation after 28 d. Estimated half-life based upon the total base- or acid-catalyzed rate constant is above 60 days (pH=7 and pH=8). Thus, the substance is considered to be very persistent (vP).
Bioaccumulation
Dipentaerythritol hexaesters of 3,5,5 -trimethylhexanoic and n-heptanoic acids is characterized by a low water solubility (< 0.05 mg/L),
high log Kow (> 15) and high molecular weights (927 - 1095 g/mol). Based on the physico/chemical properties such as low water solubility and high potential for adsorption, a reduced availability in water is expected. The high molecular weight of the substance significantly reduces the absorption due to sterical hindrance to cross biological membranes. It can be concluded that the log Kow indicating a potential for bioaccumulation, overestimates the true bioaccumulation potential of the substance. BCF/BAF values estimated by QSAR (BCFBAF v3.01) also indicate that the substance will not be bioaccumulative (all well below 2000 L/kg). Taking all these information into account, it can be concluded that bioaccumulation of Dipentaerythritol hexaesters of 3,5,5 -trimethylhexanoic and n-heptanoic acids is unlikely to occur.
Toxicity
Dipentaerythritol hexaesters of 3,5,5 -trimethylhexanoic and n-heptanoic acids is condiered not toxic.
Based on the available studies, the substance is not classified for aquatic toxicity. The substance is furthermore not classified as carcinogenic, mutagenic or toxic for reproduction nor is there any evidence of chronic toxicity. The criteria for “T” are therefore not met.
Conclusion
In conclusion the substance is not considered to meet the criteria to be classified as PBT or vPvB based on the available data.
Referenceopen allclose all
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