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EC number: 852-824-2 | CAS number: 1404220-73-0
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
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
This phosphite hydrolyses rapidly with half-lives in the range of 0.5 to 20 hours. Therefore the CSA will evaluate its hydrolysis products - phenol, isodecanol, and phosphorous acid.
Phenol PNECs
Phenol is one of the primary hydrolysis product for this phosphite, with most consistuents producing 1 to 3 moles of phenol per mole of phosphite. 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)
Isodecanol PNECs
Isodecanol is the other primary hydrolysis product for this phosphite, with most consistuents producing 1 to 3 moles of isodecanol per mole of phosphite. Isodecanol is well studied and has already been separately registered under REACH. The PNECs from this registration are below.
Substance: 271-234-0 / 68526-85-2 / Isodecanol
REACH registration number: 01-2119449807-26-0000
6 Ecotoxicological Information
Endpoint summary: Ecotoxicological Information/Isodecanol/68526-85-2
PNEC aqua (freshwater) - 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) - 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 (intermittent releases) - 2.78 mg/L
Assessment factor - 1
Extrapolation method - assessment factor
Simple non-polar narcotic mixture of alcohol isomers. 3 acute endpoints.
PNEC STP - 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 - 117mg/kg sediment dw
Assessment factor - 1
Extrapolation method - assessment factor
Environmental classification justification
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 - 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 - 22.22 mg/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 -rich is not expected based on results from bioconcentration studies asdescribed in Section 4.3.1.2 and evidence of biotransformation and metabolism as reported by deWolf and Parkerton (1999). Alcohols, C9 -11 -iso, C10 -rich is not classified and labeled for the environment based on available toxicity data
and ready biodegradability.
Since isodecanol has higher PNECs than phenol, the environmental exposure and risk assessment has focused just on phenol (conservatively assuming that all of this phosphite released into the environment becomes phenol).
Phosphorous Acid
Phosphites produce one mole of phosphorous acid upon hydrolysis. Since phosphorous acid is less toxic to environmental organisms than phenol, the environmental exposure and risk assessment has focused just on phenol (conservatively assuming that all of this phosphite released into the environment becomes phenol).
Conclusion on classification
This classification for this substance has been updated to include Chronic Aquatic 3 (H412) given the recent classification of phenol as Chronic Aquatic 2 (H411) and relevative potential for DDPP to produce phenol in the environment. DDPP has a low water solubility and what does dissolve hydrolyses rapidly to phenol, isodecyl alcohol and phosphorous acid. This low water solubility will limit the amount of phenol that can be released to the water from DDPP.
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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