Registration Dossier
Registration Dossier
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EC number: 701-341-4 | CAS number: -
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Marine water
- Hazard assessment conclusion:
- no data available: testing technically not feasible
STP
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Sediment (freshwater)
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Sediment (marine water)
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
DPDP hydrolyzes rapidly (1 -12 hr) half-life and therefore the CSA will evaluate its primary hydrolysis products - phenol and isodecanol.
Phenol PNECs
Upon hydrolysis, one mole of DPDP produces two moles of phenol. As such, it is the primary hydrolysis product for TPP. Phenol is well studied and reviewed. There are established PNECs in the published risk assessment report (ECB 2006 Phenol Risk Assessment).
PNECaqua= 7.7 μg/l (ECB 2006 Phenol Risk Assessment)
PNECmicroorganism= 2.1 mg/l (ECB 2006 Phenol Risk Assessment)
PNECsoil= 136 μg/kg dry weight (ECB 2006 Phenol Risk Assessment)
PNECsediment =115.6 mg/kg dw (ECB 2006 Phenol Risk Assessment)
Isodecanol PNECs
Upon hydrolysis, one mole of DPDP produces one mole of isodecanol. Isodecanol is separately registered under REACH and the details on the PNEC are below:
Substance: 271-234-0 / 68526-85-2 / Isodecanol
REACH registration number for Exxal 10 by ExxonMobil :
01-2119449807-26-0000
6 Ecotoxicological Information
Endpoint summary: Ecotoxicological Information/Isodecanol/68526-85-2
PNEC aqua (freshwater) in 0.4 mg/L
Assessment factor: 1
Extrapolation method: assessment factor
Simple non-polar narcotic mixture of alcohol isomers. 3 long-term endpoints.
PNEC aqua (marine waters) in 0.4 mg/L
Assessmentfactor:1
Extrapolationmethod:assessment factor
Simple non-polar narcotic mixture of alcohol isomers. 3 long-term endpoints.
PNEC aqua (intermittent releases) in 2.78 mg/L
Assessment factor - 1
Extrapolation method - assessment factor
Simple non-polar narcotic mixture of alcohol isomers. 3 acute endpoints.
PNEC STP in 4.3 mg/L
Assessment factor - 10
Extrapolation method - assessment factor
The PNEC for sewage treatment plant was determined using the NOEC for an STP inoculum from a ready
biodegradation test.
PNEC sediment in 117 mg/kg sediment dw
Assessment factor - 1
Extrapolation method - assessment factor
Experimental sediment toxicity data for isodecanol are not available. PNECs for the sediment compartment were
derived based on the results from three long-term endpoints representing three trophic levels, as well as the
Equilibrium Partitioning Method.
PNEC soil in 95 mg/kg soil dw
Assessment factor - 1
Extrapolation method - assessment factor
Isodecanol is expected to have a low potential to produce toxicity in terrestrial species (earthworm and plants),
based on (Q)SAR predictions and the Equilibrium Partitioning Method.
PNEC oral in 22.22 kg/kg food
Assessment factor - 90
Based on a 13 week rat NOAEL of 100 mg/kg/d with iso-undecanol. Conversion factor for rats used was 20 bw/dwi. Assessment factor for 90 day study used (90). Results have been reported in mg/kg food. Secondary poisoning for alcohols, C9 -11 -iso, C10 -richisnot expected based on results from bioconcentration studies asdescribed in Section 4.3.1.2and evidence of biotransformation and metabolism as reported by deWolf and Parkerton (1999). Alcohols, C9 -11 -iso, C10 -richis not classified and labeled for the environment based on available toxicity data
and ready biodegradability.
Phosphorous Acid
Phosphorous acid is also a hydrolysis product of DPDP; one mole of DPDP produces one mole of phosphorous acid. Since the element phosphorous is an essential plant nutrient and phosphorous acid and its salts have low relatively low plant, animal and human toxicity, it appears that phosphorous acid will not have a significant impact on the environmental assessment of DPDP. As such, the environmental assessment has focused on phenol and isodeanol.
Conclusion on classification
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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