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EC number: 500-513-4 | CAS number: 161074-79-9 1 - 2.5 moles ethoxylated
- 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
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- key study
- Study period:
- 28 Apr 2010
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Principles of method if other than guideline:
- For a surfactant, all methods for the determination of Log P have limitations, and calculation is one the suggested procedures by REACH guidance. In addition, if there is an ionisable group, the literature suggests the calculation of Log D .
logP refers to the logarithm of the Partition Coefficient, P, which is defined as the ratio of concentration of Neutral species in octanol divided the concentrationof neutral species in water
P = (neutral species)octanol / (neutral species)water
logD refers to the logarithm of the Distribution Coefficient, D, which is defined as the ratio of concentrations of ALL species, neutral & ionized, in octanol divided by the concentration of all speciesin water
D = (neutral species + ionized species)octanol / (neutral species + ionized species)water
One software for the estimation of Log D is Sparc, also suggested in REACH guidance, by using this tool the Log Ds were obtained for the major components ofthe substance. - GLP compliance:
- no
- Type of method:
- other: calculation
- Partition coefficient type:
- octanol-water
- Key result
- Type:
- log Pow
- Partition coefficient:
- >= 0.68 - <= 2.31
- Temp.:
- 20 °C
- pH:
- ca. 7
- Remarks on result:
- other: the value is for Distribution coefficient (log D), average value is 1.5
Reference
Components of Alcohols C12 -13, ethoxylated sulphated, branched and linear, sodium salts |
|
Species |
Log D at pH 7 |
linear C12-EO 0 sulphate (from the alcohol parent 15-25%) 1.55 |
1.55 |
branched C12-EO 0 sulphate |
0.68 |
linear C12-EO1 sulphate |
1.68 |
branched C12-EO1 sulphate |
1.33 |
linear C12-EO2 sulphate |
1.83 |
branched C12-EO2 sulphate |
1.48 |
linear C12-EO3 sulphate |
1.98 |
branched C12-EO3 sulphate |
1.62 |
linear C13-EO 0 sulphate (from the alcohol parent 15-25%) |
1.91 |
branched C13-EO 0 sulphate |
1.00 |
linear C13-EO1 sulphate |
2.02 |
branched C13-EO1 sulphate |
1.66 |
linear C13-EO2 sulphate |
2.16 |
branched C13-EO2 sulphate |
1.81 |
linear C13-EO3 sulphate |
2.31 |
branched C13-EO3 sulphate |
1.96 |
Description of key information
The distribution coefficient (octanol/water) log D is estimated to be in the range of 0.68 - 2.31 with a average value of 1.5 at pH 7 and 20 °C.
Key value for chemical safety assessment
Additional information
All methods for the determination of Log P have their limitations for surfactants. Calculation is one of the procedures suggested in REACH guidance. In addition, it is suggested that Log D (logarithm of distribution coefficient) instead of Log P can be calculated if ionisable groups are present.
D = (neutral species + ionized species)octanol / (neutral species + ionized species)water
The average value of log D is 1.5, obtained using SPARC model.
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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