Registration Dossier
Registration Dossier
Diss Factsheets
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EC number: 618-347-7 | CAS number: 9003-01-4
- 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

Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption: screening
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Justification for type of information:
- 1. HYPOTHESIS FOR THE ANALOGUE APPROACH
- Read-across hypothesis: "Different compounds have the same type of effect(s)"
2. SOURCE AND TARGET CHEMICAL(S) (INCLUDING INFORMATION ON PURITY AND IMPURITIES)
- Target chemical: 2-Propenoic acid, homopolymer (purity ≥ 99.0%) = UVCB substance composed of acrylic acid monomers (Mw = 72 g/mol) and 2-carboxyethyl acrylate oligomers (avergae Mw = 208.8 g/mol)
- Source chemical: Acrylic acid = monoconstituent substance composed of acrylic acid monomers (Mw = 72 g/mol)
3. ANALOGUE APPROACH JUSTIFICATION
- Common structure: the constituents of the target and source chemicals share identical functional groups (i.e. one terminal carboxylic acid group and one terminal vinyl group) and only differ in the presence/absence of one or several -CH2-CH2-COO- pattern(s) in their structural backbones. This pattern being introduced as a result of (poly)addition reactions, it is only present in the polymerized units of acrylic acid (average number of -CH2-CH2-COO- patterns per vinyl group: < 3) and is absent from the monomer units.
- Common physico-chemical/fate properties: the target and source chemicals are both hydrophylic substances (log Pow < 1) with a high solubility in water and a low volatility (VP < 5 hPa). Both substances have a low potential for bioaccumulation in living organisms (log Pow < 4) and a low potential for persistence in environmental compartments (rapidly degradable).
- Common behaviour: as the polyaddition reactions lead only to an increase in the chain length/molecular weight without an increase in the number of reactive functional groups, the low molecular-weight polymerized units of acrylic acid (from the test item) are not expected to behave much differently from the monomer units in the environment. As a result, the target chemical, although only partially composed of acrylic acid monomers, is considered to exhibit a partition behaviour similar to the one of the source substance.
Further information (including data matrix) is available in the attached read-across justification document. - Reason / purpose for cross-reference:
- read-across source
- Key result
- Type:
- Koc
- Value:
- 6 - 137 L/kg
- Matrix:
- soil
- Remarks on result:
- other: arithmetic mean = 45.3 L/kg
- Remarks:
- read-across from acrylic acid
- Type:
- Kd
- Value:
- 0.2 - 0.63 L/kg
- Matrix:
- soil
- Remarks on result:
- other: arithmetic mean = 0.41 L/kg
- Remarks:
- read-across from acrylic acid
- Key result
- Type:
- Koc
- Value:
- 33
- Matrix:
- sediment
- Remarks on result:
- other: read-across from acrylic acid
- Type:
- Kd
- Value:
- 0.41
- Matrix:
- sediment
- Remarks on result:
- other: read-across from acrylic acid
- Conclusions:
- Using a read-across approach, the REACH substance is expected to exhibit an adsorption coefficient Koc in the range 6-137 L/kg (Kd = 0.20-0.63) in the soil compartment, depending on the pH and organic carbon content. Using the same read-across approach, the REACH substance item is expected to exhibit an adsorption coefficient Koc of 33 L/kg (Kd = 0.41) in the sediment compartment.
Reference
Description of key information
As no data were available to characterize the adsorption/desorption behaviour of the REACH substance in soil and sediment compartments, a read-across approach was followed to fill in the endpoint. The REACH substance is composed of polymerized units of acrylic acid (identified as "2-carboxyethyl acrylate oligomers") and residual monomers of acrylic acid, and is expected to exhibit a partition behaviour similar to the one of acrylic acid: both are indeed hydrophylic substances (log Pow < 1) with a high solubility in water, a low volatility (VP < 5 hPa) and a low potential for bioaccumulation in living organisms (log Pow < 4).
According to the data available on acrylic acid, the REACH substance is expected, by analogy, to exhibit an adsorption coefficient Koc in the range 6-137 L/kg (Kd = 0.20-0.63) in the soil compartment, depending on the pH and organic carbon content; an average Koc of 45.3 L/kg (arithmetic mean) was used for the exposure assessment of the REACH substance in the soil compartment.
As well, according to the data available on acrylic acid, the REACH substance is expected, by analogy, to exhibit an adsorption coefficient Koc of 33 L/kg (Kd = 0.41) in the sediment compartment; this value was used for the exposure assessment of the REACH substance in the sediment compartment.
Key value for chemical safety assessment
- Koc at 20 °C:
- 45.3
Other adsorption coefficients
- Type:
- log Kp (solids-water in soil)
- Value in L/kg:
- -0.38
Other adsorption coefficients
- Type:
- log Kp (solids-water in sediment)
- Value in L/kg:
- -0.38
Additional information
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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